Deep River Center climate

Deep River Center Weather in September

NOAA 1991-2020 normals for Groton, 33.7 km from Deep River Center

Average highs run from 78°F on September 1 to 69°F on September 30, and lows from 63°F to 53°F. Normal precipitation for the month is 4.29 in over about 10 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 Deep River Center, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
74°F
Average low
58°F
Precipitation
4.29 in
Record high
97°FSep 8, 2015
Record low
33°FSep 22, 2020
Chance of a freeze
0%
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
53%
Humidity
75%
Dew point
56°F
Wind
4.9 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 178°F63°F93°F 201045°F 200930%0%
Sep 278°F62°F92°F 201540°F 201730%0%
Sep 377°F62°F92°F 201546°F 202430%0%
Sep 477°F62°F92°F 201848°F 202431%0%
Sep 577°F62°F92°F 202346°F 200031%0%
Sep 677°F61°F94°F 201844°F 200031%0%
Sep 776°F61°F94°F 202342°F 200031%0%
Sep 876°F61°F97°F 201545°F 202531%0%
Sep 976°F60°F92°F 201642°F 201332%0%
Sep 1076°F60°F90°F 201645°F 200332%0%
Sep 1175°F60°F93°F 201342°F 201232%0%
Sep 1275°F59°F93°F 200541°F 200632%0%
Sep 1375°F59°F92°F 200544°F 200233%0%
Sep 1474°F59°F91°F 201646°F 201433%0%
Sep 1574°F58°F84°F 201542°F 200133%0%
Sep 1674°F58°F87°F 201539°F 200133%0%
Sep 1773°F58°F89°F 201540°F 200034%0%
Sep 1873°F57°F86°F 201538°F 201334%0%
Sep 1973°F57°F88°F 202438°F 201934%0%
Sep 2072°F57°F85°F 201637°F 202034%0%
Sep 2172°F56°F85°F 201635°F 202035%0%
Sep 2272°F56°F86°F 201633°F 202035%0%
Sep 2371°F55°F87°F 201739°F 201435%0%
Sep 2471°F55°F92°F 201738°F 202235%0%
Sep 2571°F55°F89°F 201739°F 201235%0%
Sep 2670°F54°F88°F 200739°F 201635%0%
Sep 2770°F54°F89°F 201735°F 200035%0%
Sep 2870°F53°F84°F 201436°F 200035%0%
Sep 2969°F53°F83°F 201533°F 200035%0%
Sep 3069°F53°F81°F 202534°F 200035%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Deep River Center, 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).

September 1
sunrise 6:16 AM, sunset 7:23 PM
September 30
sunrise 6:46 AM, sunset 6:33 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00063207 (Groton), public domain. Records: NOAA GHCN-Daily, station USW00054788, 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.