Exeter climate

Exeter Weather in September

NOAA 1991-2020 normals for Fairmont, 12.1 km from Exeter

Average highs run from 83°F on September 1 to 73°F on September 30, and lows from 57°F to 46°F. Normal precipitation for the month is 2.63 in over about 6 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 Exeter, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
52°F
Precipitation
2.63 in
Record high
101°FSep 5, 2012
Record low
30°FSep 23, 2012
Chance of a freeze
14%
Days of 90°F or more
3.5
Daylight
13 h 05 min to 11 h 48 min
Cloud cover
46%
Humidity
62%
Dew point
52°F
Wind
11.0 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 183°F57°F97°F 201244°F 200922%0%
Sep 283°F57°F97°F 201249°F 202422%0%
Sep 383°F57°F98°F 202345°F 200822%0%
Sep 482°F56°F96°F 202343°F 201022%0%
Sep 582°F56°F101°F 201242°F 201122%0%
Sep 682°F56°F94°F 202040°F 201722%0%
Sep 782°F55°F96°F 201341°F 202521%0%
Sep 881°F55°F94°F 202641°F 201221%0%
Sep 981°F55°F96°F 201339°F 200821%0%
Sep 1081°F54°F97°F 201339°F 200821%0%
Sep 1181°F54°F93°F 201344°F 202021%0%
Sep 1280°F53°F95°F 201242°F 202321%0%
Sep 1380°F53°F94°F 202534°F 201421%0%
Sep 1480°F53°F95°F 202534°F 201421%0%
Sep 1579°F52°F93°F 201737°F 201121%0%
Sep 1679°F52°F93°F 201738°F 200821%0%
Sep 1779°F51°F91°F 202141°F 202321%0%
Sep 1878°F51°F94°F 201835°F 201221%0%
Sep 1978°F51°F93°F 202336°F 201221%0%
Sep 2078°F50°F98°F 202239°F 201221%0%
Sep 2177°F50°F99°F 202242°F 201221%0%
Sep 2277°F49°F93°F 201736°F 201121%0%
Sep 2376°F49°F96°F 201730°F 201221%0%
Sep 2476°F49°F93°F 201730°F 201220%0%
Sep 2575°F48°F89°F 202236°F 201120%0%
Sep 2675°F48°F87°F 202037°F 201120%0%
Sep 2775°F47°F92°F 202136°F 201220%0%
Sep 2874°F47°F93°F 202135°F 201220%0%
Sep 2974°F46°F93°F 202130°F 200920%0%
Sep 3073°F46°F94°F 202330°F 200920%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Exeter, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:57 AM, sunset 8:02 PM
September 30
sunrise 7:25 AM, sunset 7:13 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00252840 (Fairmont), public domain. Records: NOAA GHCN-Daily, station USC00259513, 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.