Jefferson climate

Jefferson Weather in September

NOAA 1991-2020 normals for Commerce 4 Nnw, 17.9 km from Jefferson

Average highs run from 87°F on September 1 to 79°F on September 30, and lows from 66°F to 56°F. Normal precipitation for the month is 3.84 in over about 7 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 Jefferson, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
83°F
Average low
62°F
Precipitation
3.84 in
Record high
99°FSep 2, 1957
Record low
29°FSep 30, 1967
Chance of a freeze
0%
Days of 90°F or more
5.0
Daylight
12 h 52 min to 11 h 52 min
Cloud cover
51%
Humidity
72%
Dew point
61°F
Wind
4.3 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 187°F66°F97°F 195752°F 197623%0%
Sep 287°F66°F99°F 195746°F 195823%0%
Sep 386°F65°F99°F 201149°F 195823%0%
Sep 486°F65°F96°F 201151°F 195823%0%
Sep 586°F65°F95°F 196248°F 195822%0%
Sep 686°F65°F95°F 196050°F 199722%0%
Sep 785°F64°F96°F 199054°F 195822%0%
Sep 885°F64°F96°F 198043°F 195822%0%
Sep 985°F64°F96°F 201643°F 195822%0%
Sep 1085°F64°F95°F 201648°F 195822%0%
Sep 1184°F63°F94°F 200749°F 196922%0%
Sep 1284°F63°F96°F 201949°F 199322%0%
Sep 1384°F63°F97°F 201941°F 198522%0%
Sep 1484°F62°F96°F 201941°F 196022%0%
Sep 1583°F62°F95°F 198040°F 196022%0%
Sep 1683°F62°F97°F 198045°F 198422%0%
Sep 1783°F61°F94°F 197246°F 196122%0%
Sep 1882°F61°F95°F 201946°F 196123%0%
Sep 1982°F61°F96°F 201841°F 198123%0%
Sep 2082°F60°F95°F 199742°F 195923%0%
Sep 2181°F60°F93°F 197039°F 198323%0%
Sep 2281°F60°F93°F 201038°F 198223%0%
Sep 2381°F59°F95°F 202439°F 198223%0%
Sep 2480°F59°F93°F 198039°F 196723%0%
Sep 2580°F58°F94°F 201639°F 196724%0%
Sep 2680°F58°F92°F 201040°F 196424%0%
Sep 2780°F58°F93°F 201943°F 198524%0%
Sep 2879°F57°F94°F 201937°F 196224%0%
Sep 2979°F57°F95°F 201636°F 196224%0%
Sep 3079°F56°F93°F 201929°F 196724%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Jefferson, 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 (EDT).

September 1
sunrise 7:08 AM, sunset 8:00 PM
September 30
sunrise 7:28 AM, sunset 7:20 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00092180 (Commerce 4 Nnw), public domain. Records: NOAA GHCN-Daily, station USC00092180, 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.