Randolph climate

Randolph Weather in September

NOAA 1991-2020 normals for Town Of Westford, 12.5 km from Randolph

Average highs run from 77°F on September 1 to 66°F on September 30, and lows from 55°F to 45°F. Normal precipitation for the month is 3.57 in over about 11 wet days.

September day by day

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

Normal daily high and low temperature at Randolph, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
72°F
Average low
50°F
Precipitation
3.57 in
Record high
95°FSep 8, 1978
Record low
24°FSep 29, 1993
Chance of a freeze
17%
Daylight
13 h 11 min to 11 h 46 min
Cloud cover
53%
Humidity
75%
Dew point
53°F
Wind
9.6 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
Sep 177°F55°F90°F 200043°F 199236%0%
Sep 277°F55°F91°F 200042°F 197636%0%
Sep 376°F55°F91°F 200840°F 197436%0%
Sep 476°F54°F92°F 202338°F 198836%0%
Sep 576°F54°F91°F 202333°F 198836%0%
Sep 675°F54°F91°F 199035°F 198636%0%
Sep 775°F54°F91°F 197839°F 198637%0%
Sep 875°F53°F95°F 197840°F 199537%0%
Sep 975°F53°F95°F 197835°F 197537%0%
Sep 1074°F53°F92°F 197835°F 199337%0%
Sep 1174°F52°F94°F 201335°F 199337%0%
Sep 1274°F52°F90°F 200536°F 197537%0%
Sep 1373°F51°F91°F 199833°F 197536%0%
Sep 1473°F51°F92°F 199835°F 197536%0%
Sep 1573°F51°F87°F 199433°F 200736%0%
Sep 1672°F50°F86°F 202433°F 200736%0%
Sep 1772°F50°F87°F 202436°F 198436%0%
Sep 1871°F50°F87°F 201834°F 197336%0%
Sep 1971°F49°F85°F 197833°F 201237%0%
Sep 2071°F49°F86°F 199832°F 197337%0%
Sep 2170°F48°F87°F 201734°F 199537%0%
Sep 2270°F48°F87°F 200526°F 197437%0%
Sep 2369°F48°F90°F 201727°F 199537%0%
Sep 2469°F47°F91°F 201728°F 197637%0%
Sep 2568°F47°F89°F 201732°F 198937%0%
Sep 2668°F46°F89°F 201729°F 198937%0%
Sep 2768°F46°F86°F 199829°F 199137%0%
Sep 2867°F46°F84°F 197129°F 199237%0%
Sep 2967°F45°F84°F 197124°F 199337%0%
Sep 3066°F45°F86°F 197127°F 199337%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Randolph, 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 (CDT).

September 1
sunrise 6:20 AM, sunset 7:31 PM
September 30
sunrise 6:53 AM, sunset 6:39 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00478540 (Town Of Westford), public domain. Records: NOAA GHCN-Daily, station USC00473756, 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.