Dunstable climate

Dunstable Weather in September

NOAA 1991-2020 normals for Nashua Cwsu, 6.6 km from Dunstable

Average highs run from 80°F on September 1 to 69°F on September 30, and lows from 57°F to 46°F. Normal precipitation for the month is 4.15 in.

September day by day

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

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

September at a glance

Average high
75°F
Average low
52°F
Precipitation
4.15 in
Record high
99°FSep 2, 1953
Record low
23°FSep 28, 1947
Chance of a freeze
14%
Days of 90°F or more
3.0
Daylight
13 h 09 min to 11 h 47 min
Cloud cover
55%
Humidity
75%
Dew point
54°F
Wind
4.7 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 180°F57°F96°F 201036°F 19260%
Sep 280°F57°F99°F 195336°F 19710%
Sep 380°F57°F95°F 192935°F 19700%
Sep 480°F57°F95°F 201038°F 19450%
Sep 579°F56°F91°F 190136°F 19380%
Sep 679°F56°F91°F 190136°F 19020%
Sep 779°F56°F95°F 194531°F 18880%
Sep 878°F55°F95°F 194533°F 19380%
Sep 978°F55°F95°F 191533°F 19380%
Sep 1078°F55°F95°F 200233°F 19530%
Sep 1177°F54°F95°F 198332°F 19170%
Sep 1277°F54°F89°F 190031°F 19330%
Sep 1377°F54°F90°F 193132°F 19430%
Sep 1476°F53°F95°F 191531°F 19110%
Sep 1576°F53°F96°F 191530°F 19750%
Sep 1675°F52°F96°F 191527°F 19640%
Sep 1775°F52°F94°F 191532°F 19500%
Sep 1875°F52°F93°F 190630°F 19500%
Sep 1974°F51°F91°F 198329°F 19410%
Sep 2074°F51°F93°F 198327°F 19640%
Sep 2173°F50°F93°F 191428°F 19560%
Sep 2273°F50°F97°F 191427°F 19620%
Sep 2372°F49°F97°F 191426°F 19040%
Sep 2472°F49°F90°F 201925°F 19530%
Sep 2571°F48°F92°F 201725°F 19500%
Sep 2671°F48°F90°F 201725°F 19250%
Sep 2770°F47°F90°F 200724°F 19470%
Sep 2870°F47°F89°F 201723°F 19470%
Sep 2970°F46°F86°F 201425°F 19140%
Sep 3069°F46°F85°F 195224°F 19510%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dunstable, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:11 AM, sunset 7:20 PM
September 30
sunrise 6:42 AM, sunset 6:29 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00275703 (Nashua Cwsu), public domain. Records: NOAA GHCN-Daily, station USC00275712, 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.