Westminster climate

Westminster Weather in August

NOAA 1991-2020 normals for Ashburnham, 8 km from Westminster

Average highs run from 79°F on August 1 to 76°F on August 31, and lows from 59°F to 55°F. Normal precipitation for the month is 3.89 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 Westminster, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
78°F
Average low
57°F
Precipitation
3.89 in
Record high
100°FAug 2, 2006
Record low
45°FAug 24, 2003
Chance of a freeze
0%
Daylight
14 h 28 min to 13 h 11 min
Cloud cover
56%
Humidity
73%
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 179°F59°F96°F 200653°F 202135%0%
Aug 279°F59°F100°F 200649°F 202535%0%
Aug 379°F59°F95°F 201253°F 202135%0%
Aug 479°F59°F96°F 202255°F 199935%0%
Aug 579°F59°F94°F 202253°F 201335%0%
Aug 679°F59°F97°F 202250°F 201334%0%
Aug 779°F59°F96°F 202250°F 200434%0%
Aug 879°F58°F97°F 202253°F 200434%0%
Aug 979°F58°F97°F 200151°F 199934%0%
Aug 1079°F58°F94°F 202049°F 199934%0%
Aug 1179°F58°F95°F 201649°F 200734%0%
Aug 1279°F58°F96°F 201651°F 200633%0%
Aug 1379°F58°F97°F 200248°F 200633%0%
Aug 1478°F58°F98°F 200253°F 200633%0%
Aug 1578°F58°F94°F 200252°F 200733%0%
Aug 1678°F58°F94°F 200252°F 202632%0%
Aug 1778°F57°F93°F 200953°F 200032%0%
Aug 1878°F57°F94°F 200248°F 200032%0%
Aug 1978°F57°F92°F 200248°F 200732%0%
Aug 2078°F57°F92°F 202246°F 200731%0%
Aug 2178°F57°F92°F 200947°F 200731%0%
Aug 2278°F57°F91°F 201746°F 200731%0%
Aug 2378°F57°F94°F 202051°F 202330%0%
Aug 2477°F56°F94°F 202045°F 200330%0%
Aug 2577°F56°F94°F 200748°F 201930%0%
Aug 2677°F56°F94°F 202146°F 201930%0%
Aug 2777°F56°F92°F 202148°F 201929%0%
Aug 2877°F56°F92°F 201848°F 202529%0%
Aug 2977°F56°F94°F 201049°F 200329%0%
Aug 3076°F55°F93°F 201049°F 202429%0%
Aug 3176°F55°F97°F 201047°F 200229%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Westminster, 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 5:40 AM, sunset 8:08 PM
August 31
sunrise 6:12 AM, sunset 7:23 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00190190 (Ashburnham), public domain. Records: NOAA GHCN-Daily, station USW00004780, 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.