Winchester climate

Winchester Weather in August

NOAA 1991-2020 normals for Keene, 19.1 km from Winchester

Average highs run from 82°F on August 1 to 78°F on August 31, and lows from 56°F to 52°F. Normal precipitation for the month is 4.28 in over about 10 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Winchester, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
81°F
Average low
54°F
Precipitation
4.28 in
Record high
102°FAug 5, 1955
Record low
27°FAug 25, 1940
Chance of a freeze
0%
Days of 90°F or more
2.5
Daylight
14 h 29 min to 13 h 13 min
Cloud cover
59%
Humidity
79%
Dew point
59°F
Wind
3.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 182°F56°F99°F 195535°F 196436%0%
Aug 282°F56°F98°F 197539°F 192436%0%
Aug 382°F56°F96°F 198838°F 192436%0%
Aug 482°F56°F96°F 198836°F 196436%0%
Aug 582°F56°F102°F 195539°F 197236%0%
Aug 682°F56°F94°F 190037°F 193335%0%
Aug 782°F56°F99°F 191838°F 193435%0%
Aug 882°F56°F95°F 190937°F 190335%0%
Aug 981°F55°F95°F 200137°F 189935%0%
Aug 1081°F55°F99°F 194936°F 193335%0%
Aug 1181°F55°F96°F 194439°F 189435%0%
Aug 1281°F55°F97°F 194439°F 190934%0%
Aug 1381°F55°F96°F 194438°F 190234%0%
Aug 1481°F55°F96°F 194736°F 196134%0%
Aug 1581°F55°F98°F 197038°F 189934%0%
Aug 1681°F55°F96°F 197037°F 196434%0%
Aug 1781°F55°F95°F 194436°F 191234%0%
Aug 1881°F54°F97°F 191336°F 191833%0%
Aug 1980°F54°F94°F 200236°F 191833%0%
Aug 2080°F54°F94°F 195537°F 189633%0%
Aug 2180°F54°F94°F 191637°F 192933%0%
Aug 2280°F54°F95°F 195535°F 189432%0%
Aug 2380°F54°F94°F 191830°F 198832%0%
Aug 2480°F53°F94°F 194734°F 195232%0%
Aug 2579°F53°F96°F 194827°F 194032%0%
Aug 2679°F53°F100°F 194827°F 194032%0%
Aug 2779°F53°F98°F 194932°F 194031%0%
Aug 2879°F53°F96°F 194834°F 192531%0%
Aug 2979°F52°F97°F 195334°F 190831%0%
Aug 3079°F52°F95°F 195332°F 196531%0%
Aug 3178°F52°F94°F 195330°F 196531%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Winchester, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 5:41 AM, sunset 8:10 PM
August 31
sunrise 6:13 AM, sunset 7:26 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00274399 (Keene), public domain. Records: NOAA GHCN-Daily, station USC00274399, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.