Trenton climate

Trenton Weather in September

NOAA 1991-2020 normals for Trenton Dam 1N, 4.8 km from Trenton

Average highs run from 86°F on September 1 to 75°F on September 30, and lows from 58°F to 45°F. Normal precipitation for the month is 1.44 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 Trenton, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
52°F
Precipitation
1.44 in
Record high
106°FSep 6, 2013
Record low
29°FSep 30, 2011
Chance of a freeze
9%
Days of 90°F or more
7.8
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
44%
Humidity
52%
Dew point
47°F
Wind
10.7 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 186°F58°F101°F 202347°F 200521%0%
Sep 286°F57°F103°F 202347°F 202020%0%
Sep 385°F57°F103°F 199841°F 201020%0%
Sep 485°F57°F102°F 201342°F 200820%0%
Sep 585°F56°F101°F 199842°F 201120%0%
Sep 685°F56°F106°F 201336°F 201720%0%
Sep 784°F56°F106°F 201338°F 201020%0%
Sep 884°F55°F105°F 201339°F 202020%0%
Sep 984°F55°F99°F 201337°F 202020%0%
Sep 1083°F54°F102°F 202140°F 202020%0%
Sep 1183°F54°F104°F 202141°F 201420%0%
Sep 1283°F54°F101°F 202534°F 201420%0%
Sep 1382°F53°F101°F 200032°F 201419%0%
Sep 1482°F53°F98°F 201737°F 201219%0%
Sep 1582°F52°F100°F 201535°F 200819%0%
Sep 1681°F52°F96°F 201538°F 201219%0%
Sep 1781°F51°F98°F 200341°F 201219%0%
Sep 1881°F51°F101°F 200434°F 201219%0%
Sep 1980°F50°F99°F 201831°F 200319%0%
Sep 2080°F50°F100°F 202238°F 201219%0%
Sep 2179°F50°F100°F 200535°F 199919%0%
Sep 2279°F49°F99°F 201733°F 201119%0%
Sep 2379°F49°F96°F 200335°F 201119%0%
Sep 2478°F48°F96°F 200533°F 200018%0%
Sep 2578°F48°F103°F 199831°F 200018%0%
Sep 2677°F47°F99°F 202133°F 200018%0%
Sep 2777°F47°F97°F 202137°F 200618%0%
Sep 2876°F46°F95°F 202332°F 200618%0%
Sep 2976°F46°F94°F 201931°F 199918%0%
Sep 3075°F45°F97°F 201929°F 201118%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Trenton, 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 7:12 AM, sunset 8:15 PM
September 30
sunrise 7:40 AM, sunset 7:28 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00258628 (Trenton Dam 1N), public domain. Records: NOAA GHCN-Daily, station USW00094040, 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.