Station Overview Station Location
Station Number NY-MR-21 Latitude 43.03498
Station Name Pittsford 4.0 SSE Longitude -77.49449
County Monroe Elevation (ft) 557



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 15 2.92 2.94 11 2.94 11 0.00 0 0 11 0 0.0 0 0
Nov 15 2.82 0.48 5 0.48 5 0.00 0 0 4 1 1.2 2 2
Dec 15 2.48 2.63 12 2.63 12 0.00 0 0 12 0 1.3 1 1
Jan 16 2.20 0.38 4 0.38 4 0.00 0 0 4 0 1.1 2 2
Feb 16 1.76 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 16 2.44 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 16 2.75 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 16 2.79 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 16 3.19 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 16 3.40 1.31 6 1.31 6 0.00 0 0 6 0 0.0 0 0
Aug 16 3.13 3.29 7 3.29 7 0.00 0 0 7 0 0.0 0 0
Sept 16 3.33 1.92 4 1.92 4 0.00 0 0 3 1 0.0 0 0
Water Year Totals: 33.21" 12.95" 49 days 12.95" 49 0.00" 0 days 0 47 days 2 days 3.6" 5 days 5 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2015 0.12
10/2/2015
10/3/2015
10/4/2015 0.04
10/5/2015
10/6/2015
10/7/2015
10/8/2015
10/9/2015 1.03
10/10/2015 0.01
10/11/2015
10/12/2015
10/13/2015 0.09
10/14/2015 0.04
10/15/2015
10/16/2015
10/17/2015
10/18/2015
10/19/2015
10/20/2015
10/21/2015
10/22/2015 0.04
10/23/2015
10/24/2015
10/25/2015 0.36
10/26/2015
10/27/2015
10/28/2015 0.46
10/29/2015 0.70
10/30/2015 0.05
10/31/2015
11/1/2015 0.06
11/2/2015
11/3/2015
11/4/2015
11/5/2015
11/6/2015
11/7/2015
11/8/2015
11/9/2015
11/10/2015
11/11/2015
11/12/2015
11/13/2015
11/14/2015
11/15/2015
11/16/2015
11/17/2015
11/18/2015
11/19/2015
11/20/2015
11/21/2015
11/22/2015 0.03
11/23/2015 0.05
11/24/2015 T
11/25/2015
11/26/2015
11/27/2015
11/28/2015 0.34
11/29/2015
11/30/2015
12/1/2015
12/2/2015 0.09
12/3/2015 0.53
12/4/2015 0.03
12/5/2015
12/6/2015
12/7/2015
12/8/2015
12/9/2015
12/10/2015
12/11/2015
12/12/2015
12/13/2015
12/14/2015
12/15/2015
12/16/2015
12/17/2015
12/18/2015 0.03
12/19/2015
12/20/2015
12/21/2015
12/22/2015 0.36
12/23/2015 0.29
12/24/2015 0.04
12/25/2015 0.03
12/26/2015
12/27/2015 0.32
12/28/2015 0.20
12/29/2015
12/30/2015 0.65
12/31/2015 0.06
Day of YearDaily PrcpMultiday Prcp
1/1/2016
1/2/2016
1/3/2016
1/4/2016 0.03
1/5/2016 0.01
1/6/2016
1/7/2016
1/8/2016
1/9/2016 0.07
1/10/2016 0.27
1/11/2016
1/12/2016
1/13/2016
1/14/2016
1/15/2016
1/16/2016
1/17/2016
1/18/2016
1/19/2016
1/20/2016
1/21/2016
1/22/2016
1/23/2016
1/24/2016
1/25/2016
1/26/2016
1/27/2016
1/28/2016
1/29/2016
1/30/2016
1/31/2016
2/1/2016
2/2/2016
2/3/2016
2/4/2016
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/2016
2/12/2016
2/13/2016
2/14/2016
2/15/2016
2/16/2016
2/17/2016
2/18/2016
2/19/2016
2/20/2016
2/21/2016
2/22/2016
2/23/2016
2/24/2016
2/25/2016
2/26/2016
2/27/2016
2/28/2016
2/29/2016
3/1/2016
3/2/2016
3/3/2016
3/4/2016
3/5/2016
3/6/2016
3/7/2016
3/8/2016
3/9/2016
3/10/2016
3/11/2016
3/12/2016
3/13/2016
3/14/2016
3/15/2016
3/16/2016
3/17/2016
3/18/2016
3/19/2016
3/20/2016
3/21/2016
3/22/2016
3/23/2016
3/24/2016
3/25/2016
3/26/2016
3/27/2016
3/28/2016
3/29/2016
3/30/2016
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016
4/2/2016
4/3/2016
4/4/2016
4/5/2016
4/6/2016
4/7/2016
4/8/2016
4/9/2016
4/10/2016
4/11/2016
4/12/2016
4/13/2016
4/14/2016
4/15/2016
4/16/2016
4/17/2016
4/18/2016
4/19/2016
4/20/2016
4/21/2016
4/22/2016
4/23/2016
4/24/2016
4/25/2016
4/26/2016
4/27/2016
4/28/2016
4/29/2016
4/30/2016
5/1/2016
5/2/2016
5/3/2016
5/4/2016
5/5/2016
5/6/2016
5/7/2016
5/8/2016
5/9/2016
5/10/2016
5/11/2016
5/12/2016
5/13/2016
5/14/2016
5/15/2016
5/16/2016
5/17/2016
5/18/2016
5/19/2016
5/20/2016
5/21/2016
5/22/2016
5/23/2016
5/24/2016
5/25/2016
5/26/2016
5/27/2016
5/28/2016
5/29/2016
5/30/2016
5/31/2016
6/1/2016
6/2/2016
6/3/2016
6/4/2016
6/5/2016
6/6/2016
6/7/2016
6/8/2016
6/9/2016
6/10/2016
6/11/2016
6/12/2016
6/13/2016
6/14/2016
6/15/2016
6/16/2016
6/17/2016
6/18/2016
6/19/2016
6/20/2016
6/21/2016
6/22/2016
6/23/2016
6/24/2016
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016
7/2/2016 0.12
7/3/2016
7/4/2016
7/5/2016
7/6/2016
7/7/2016
7/8/2016 0.02
7/9/2016 0.20
7/10/2016
7/11/2016
7/12/2016
7/13/2016
7/14/2016 0.37
7/15/2016
7/16/2016 0.25
7/17/2016
7/18/2016
7/19/2016
7/20/2016
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016 0.35
7/26/2016
7/27/2016
7/28/2016
7/29/2016
7/30/2016
7/31/2016
8/1/2016
8/2/2016
8/3/2016
8/4/2016
8/5/2016
8/6/2016
8/7/2016
8/8/2016
8/9/2016
8/10/2016
8/11/2016
8/12/2016
8/13/2016
8/14/2016 0.63
8/15/2016
8/16/2016
8/17/2016 0.52
8/18/2016
8/19/2016
8/20/2016
8/21/2016 1.12
8/22/2016 0.19
8/23/2016
8/24/2016
8/25/2016 0.52
8/26/2016 0.03
8/27/2016
8/28/2016
8/29/2016
8/30/2016
8/31/2016 0.28
9/1/2016
9/2/2016
9/3/2016
9/4/2016
9/5/2016
9/6/2016
9/7/2016 0.11
9/8/2016 T
9/9/2016 0.08
9/10/2016
9/11/2016
9/12/2016
9/13/2016
9/14/2016
9/15/2016
9/16/2016
9/17/2016
9/18/2016 1.73
9/19/2016
9/20/2016
9/21/2016
9/22/2016
9/23/2016
9/24/2016
9/25/2016
9/26/2016
9/27/2016
9/28/2016
9/29/2016
9/30/2016



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2015 9:05 AM 0.12 M M M M Delayed report.
10/4/2015 9:05 AM 0.04 M M M M Overcast with a NE breeze, but not as strong as previous days. Temperature far below normal; maximum reading only 48. Overnight minimum today was 43. Light rainshowers broke out mid afternoon; the heavier and measureable rain arrived at 16:15 and stopped shortly after 18:00. Overnight, overcast with a light ENE drift to near calm. At dawn, skies began to clear. At obs, sunny and 45.
10/9/2015 9:55 AM 1.03 M M M M Late obs. Showers arrived around 23:15, with embedded heavier rainfall rates. At obs, very light rain falling.
10/10/2015 9:55 AM 0.01 M M M M Tail end of precip from rainfall event by 10am yesterday.
10/13/2015 9:05 AM 0.09 M M M M Delayed report.
10/14/2015 9:45 AM 0.04 M M M M Light rain tapering off to drizzle at obs time. Temp 51 degrees with NW breeze. Sunny/Cloudy intervals on Tuesday the 13th, with max temp in the mid 60s.
10/22/2015 9:05 AM 0.04 M M M M Lightning and thunder after midnight to 01:30. At obs, overcast with temps near 60.
10/25/2015 9:05 AM 0.36 M M M M Overcast skies Saturday with light rain breaking out after 14:00. Heavier showers with some thunder heard Saturday night before 22:00. At obs time, overcast, temps in upper 40s, with NW breeze.
10/28/2015 10:30 AM 0.46 M M M M Fading sunshine through high clouds on Tu 10/27, gave way to developing light rain around 5am. At late obs time, steady light rain, 51 with nearly half inch of liquid. SE wind 5-15 knots, heavy leaf dumping from Norwegian maple trees and other species.
10/29/2015 8:30 AM 0.70 M M M M Periods of rain along with drier intervals and even limited sunshine. Along with mild temperatures, as maximum temps approached 60 at midnight. Major leaf dumping with lawn covered. At obs time, 49 degrees with rain falling and gusty NW winds.
10/30/2015 8:30 AM 0.05 M M M M Rainshowers early in period and then again last night. The latter event was tied in with Lake Erie as lake-effect rain showers. Daytime temps in the low-mid 50s. Overnight low with partial clearing was 43.
11/1/2015 9:30 AM 0.06 M M M M Some morning sunshine Halloween morning faded behind increasing middle and high clouds in the afternoon. Showers arrived late, though some drizzle observed earlier in evening. At obs time, partial clearing, skies, brisk WSW wind,temps near 60. Times listed are Standard Time, Eastern, including precip start time, when measurable precip started.
11/22/2015 8:00 AM 0.03 M M M M Brief showers and a brief high wind event around midnight to 0200. Delayed report.
11/23/2015 9:00 AM 0.05 1.1 0.05 1.0 M Our first accumulating snowfall since last March/April. Event started just prior to midnight, lasted up to 1 hour to 90 minutes, time approximate. At obs time, some sun, some Sc clouds, temps near 30. Temp range 41/23.
11/24/2015 9:05 AM T 0.1 M 0.5 M For the time being, there is a different "wintery" feel to the air. Max temp of 36, min of 26. At obs time, broken to overcast Sc clouds, temp 31. Light snow event was much less than the previous one 24 hours earlier, and occurred after midnight.
11/28/2015 9:00 AM 0.34 M M M M Max of 63 mid afternoon on F 11/27. Windshift and drop in temperature coincided with arrival of rain Friday evening. Also ended another warm episode for month of November. Overcast skies entire period, but the rain fell mainly at night. At obs, overcast with drizzle, temp at 36. Light N to NE breeze. Pressures rather high, running close to 30.30" Hg.
12/2/2015 11:00 AM 0.09 M M M M Delayed report. Gloomy skies with some breaks in the overcast previous calendar day. At obs time, mid 40s, with light drizzle. Late report...11am.
12/3/2015 11:00 AM 0.53 M M M M Delayed report. Obs time late morning.
12/4/2015 11:00 AM 0.03 M M M M Delayed report. Light rainfall/drizzle ended by dawn on 12/4. Low stratus deck remains in place with subsidence inversion and rising pressures.
12/18/2015 8:00 AM 0.03 M M M M Delayed report.
12/22/2015 9:05 AM 0.36 M M M M Dark period previous 24 hours with thick cloud cover and requiring indoor lighting (again). Last sunny day was on Sun. 12/20, before high overcast arrived Sunday afternoon. Monday was dry. Some light drizzle noted last night, with moon visible at times. Rain arrived just before 06:30 today. Obs taken at 9:05. Temp range: 54/42. At obs, 48 and R-.
12/23/2015 9:00 AM 0.29 M M M M Rain ended midday on the 22nd. Followed by partial clearing from the west/nw. Mild, temps near 55. Overnight, clear skies past 22:00, then status clouds formed/returned. At obs, low overcast and 47.
12/24/2015 8:45 AM 0.04 M M M M Unseasonably warm weather back in the area. Maximum temps crested in the upper 50s (58). Some light drizzle/rain showers developed after 15:30. Overnight, mild, with temps maxing out at 68 to 69 around 5am. At obs time, partly cloudy, 65 degrees, light SW breeze 10-20 knots.
12/25/2015 9:00 AM 0.03 M M M M Light showers/drizzle fell overnight and into early part of Christmas day. Sunshine with afternoon temps near 58 was the rule Christmas Eve afternoon. Overnight, skies clouded over and developing showers around dawn.
12/27/2015 8:00 AM 0.32 M M M M Grey Skies with sun dimly visible midday Saturday. Otherwise, overcast and cooler as pattern change slowly evolves. Light east-southeast breeze, under 5 knots. Max temps lower 40s. Northern edge of rain shield arrived at 21:20. Rain overnight, but light.
12/28/2015 8:00 AM 0.20 M M M M Gray day all day and into the night. A cold rain and occasional drizzle until about 15:30. Daytime temps in the upper 30s with light W breeze 10knts. At obs time, overcast, near 30. Interior lighting needed on Sunday the 27th. Very gloomy day.
12/30/2015 9:00 AM 0.65 1.3 M 1.0 M Overcast...gray skies with snow breaking out late afternoon. It transitioned over to sleet for a few more hours, then to freezing rain. At obs time, light drizzle, temps above freezing.
12/31/2015 8:00 AM 0.06 0.0 M 0.0 M Gray skies the rule previous 24 hours. With the exception of about a 80 minute "sunshine sandwich" that occurred between 10:45 till about 12:15. Periods of drizzle noted during the latter part of the day, dusk, and into the evening. Too warm for snow or sleet, with temp range of max 42 and overnight min of 37.
1/4/2016 8:55 AM 0.03 0.8 M 1.0 M Overcast skies Sunday as temps maxed out at 37. Arctic frontal passage late in the afternoon resulted in light snow grains. At midnight, mostly cloudy and 20 degrees. At obs time, snizzle (resembles drizzle, but very light snow), and 9 degrees.
1/5/2016 8:00 AM 0.01 0.3 M 1.0 M Gray skies and unusually cold. Light N to NE breezes, with occasional periods of very light snow. Short lake effect fetch with north-south isobars, as true Arctic air in place. Daytime temps maxed out at 12 degrees. During nightime, temps held steady, then slowly rose to 14 by dawn. Partial clearing noted at obs time, temp in mid teens.
1/9/2016 9:00 AM 0.07 0.0 M 0.0 M Delayed report.
1/10/2016 9:45 AM 0.27 M M M M Partly to mostly cloudy skies Saturday, yielding a bit of sun during Saturday. South winds transported in a mild air mass, with max temps peaking into the upper 40s. Nice day. Saturday night, rain arrived by 03:45. Late observation taken at 09:45, so the bulk of the rain event had occurred...thus readings are higher than other surrounding reporting stations. At obs, temp at 45. Overnight low 42.
7/2/2016 8:00 AM 0.12 M M M M Back online after long hiatus. Broken rain gauge now replaced with new one. Much needed rainfall fell, with two separate rainfall events during Friday 7/1. First rains arrived shortly after 12 noon (EDT), the second cluster of rainfall between 19:00 and 20:00. Very windy conditions mid to late afternoon with outflow boundaries firing up the atmosphere. After dark, clearing skies, but a breeze still in place at midnight. At obs, CAVU conitions, temp near 60 at 8am.
7/8/2016 8:00 AM 0.02 M M M M Max temp previous calendar day was 88. ROC official max 91. High dewpoint values in mid-upper 60s. Late in the day, two locally grown shower cells developed NW of us. First one grazed our location with a few drops. Within an hour, 2nd one developed upstream. That one wet the pavement, but not enough. Yield was .02. Overnight, mostly cloudy, min temp at 67.
7/9/2016 7:45 AM 0.20 M M M M Midday showers into early afternoon Friday. Temps maxing out near 81. High dewpoints, near 70. Overnight, just a grazing of rainfall, a few drops..with passage of cold front.
7/14/2016 5:40 AM 0.37 M M M M Hottest day of year with highest dewpoints. Max temp of 92, but official 94 at ROC AP location. Dewpoint near 70. Late afternoon, heavy downpours as homegrown airmass thunderstorms developed. Florida-like environment; very unpleasant to be outdoors. Brisk wind at times. Overnight, mainly overcast and humid. Big storms to our west on WSR-88D radar late last night failed to bring us any rain overnight. Storms weakened and went more northbound than eastbound for any surviving cells. At obs time, temperature at 75 degrees...highest of year for this time of day..early obs. Ground absorbed water quite well given dryness and moderate drought.
7/16/2016 8:00 AM 0.25 M M M M Not as hot previous days. Another round of convective showers formed a short distance upstream from this location...and dumped a quarter inch of badly needed rainfall at this station. Another light round (T)fell around 20:40. Windy conditions noted Friday afternoon, but tapered off to near calm by 21:30.
7/25/2016 8:45 AM 0.35 M M M M First significant, drenching rain with a longer duration occurs this reporting period. Band of thunderstorms approached from NW, with precip and thunder commencing right around 8am. At obs time, 45 minutes in, light rain with thunder.
8/14/2016 8:00 AM 0.63 M M M M Finally,significant rainfall from fast moving thunderstorms. Bow echoes seen on weather radar. Initial thunderstorm, produced strong squall of wind with outflow boundary rocking through. Also, 5th day of 90 or higher, with max of 94 and dewpoint in low to mid 70s.
8/17/2016 5:40 AM 0.52 0.0 M 0.0 M A period of moderate to heavy rain between 09:20 and 10am Tuesday with passage of warm front. Late in the day, cold frontal showers arrived. Followed by a period of windy conditions after 21:30. Winds subsided to near calm by obs time. Temp at obs in upper 60s.
8/21/2016 8:00 AM 1.12 0.0 M 0.0 M A return to hot and humid as dewpoint temps rose to near or above 70. Max temp of 90. Homegrown thunderstorm developed just miles south of this station. Crossed I-90 as the storm formed a line (east-west) and moved due north. Heaviest slug of rainfall came right over us. Later at night, partial clearing but remaining humid. Temps settled into low 70s. Another round of light rain developed by 07:40, but light and amounts less than .03. That value included in 24 hour rain catch. Daylight loss is now at 2m 41s daily at this station, and max sun angle as of today, the 21st, is now below 59 degrees, which is at 12:13 (75th Meridian Time) or 13:13 EDT.
8/22/2016 8:00 AM 0.19 0.0 M 0.0 M Showers on and off into early afternoon on Sunday. Despite passage of the primary and secondary cold front..little wind at this location. Air nearly calm or calm all day into the night time hours. Humidity lingered, despite mild temps. At obs time, mainly sunny, more of a NW breeze, and temps near 60.
8/25/2016 8:00 AM 0.52 0.0 M 0.0 M Previous 24h featured mainly sunny and warm conditions with humidity levels in check; dewpoints in upper 50s. Overnight, atmosphere moistened up with increasing clouds. Rain broke out just before 6am and ended before 07:45am. At obs time, binovc and 69. Max: 89, overnight min 67.
8/26/2016 8:00 AM 0.03 0.0 M 0.0 M Light showers in the evening. Otherwise daytime hours featured tropical-like weather conditions. Max temp of 86, dewpoint temps hovering in the lower 70s. Light SW breezes at times. Overnight, partly cloudy and humid, low temps at 71. At obs, mostly sunny, freshening NW breeze and 73.
8/31/2016 9:00 AM 0.28 0.0 M 0.0 M Showers arrived before dawn, and ended before 11 am. Remainder of day overcast but humid. Real cold front arrives Wednesday evening. Prefrontal trof (sic) produced morning rainfall event
9/7/2016 9:00 AM 0.11 0.0 M 0.0 M
9/8/2016 9:00 AM T 0.0 M 0.0 M
9/9/2016 6:55 AM 0.08 0.0 M 0.0 M Oppressively humid day, similar to Gulf Coast or Florida. However, not as hot as previous day. Also, more breezes during the day...at times.
9/18/2016 8:00 AM 1.73 0.0 M 0.0 M Highest 24 hour rainfall total since the spring. First daytime event generated .07. Remainder of Saturday afternoon dry with increasing dewpoint temps. Starting at 19:22, the main rain shield moved in from WSW. Some thunder and lightning observed with gusty winds at one point. Initial band came through...then a break, and then another round of heavy showers post 23:30. All precip over by 3am. At obs time, mainly overcast, wet everywhere, high dewpoints remain, temp near 68.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground