Trenton climate

Trenton Weather in September

NOAA 1991-2020 normals for Trenton, 0.8 km from Trenton

Average highs run from 84°F on September 1 to 74°F on September 30, and lows from 60°F to 49°F. Normal precipitation for the month is 3.88 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 Trenton, 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
55°F
Precipitation
3.88 in
Record high
100°FSep 5, 2026
Record low
32°FSep 29, 2003
Chance of a freeze
5%
Days of 90°F or more
5.1
Daylight
13 h 04 min to 11 h 48 min
Cloud cover
46%
Humidity
70%
Dew point
56°F
Wind
9.2 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 184°F60°F99°F 202647°F 200928%0%
Sep 284°F60°F99°F 202653°F 200727%0%
Sep 383°F60°F97°F 202652°F 201327%0%
Sep 483°F59°F97°F 202646°F 202527%0%
Sep 583°F59°F100°F 202647°F 200827%0%
Sep 683°F58°F96°F 201543°F 202527%0%
Sep 782°F58°F97°F 201341°F 202527%0%
Sep 882°F58°F99°F 201346°F 202427%0%
Sep 982°F57°F99°F 201343°F 200827%0%
Sep 1081°F57°F98°F 201347°F 199926%0%
Sep 1181°F57°F98°F 200048°F 200726%0%
Sep 1281°F56°F95°F 202542°F 200726%0%
Sep 1380°F56°F96°F 202540°F 201426%0%
Sep 1480°F56°F92°F 202540°F 199926%0%
Sep 1580°F55°F94°F 202536°F 200726%0%
Sep 1680°F55°F93°F 201940°F 199926%0%
Sep 1779°F54°F93°F 202641°F 199926%0%
Sep 1879°F54°F93°F 201844°F 201226%0%
Sep 1978°F54°F96°F 202242°F 200326%0%
Sep 2078°F53°F97°F 202237°F 200626%0%
Sep 2178°F53°F92°F 201737°F 199925%0%
Sep 2277°F52°F91°F 201735°F 199925%0%
Sep 2377°F52°F92°F 201734°F 201225%0%
Sep 2477°F52°F90°F 201639°F 200225%0%
Sep 2576°F51°F89°F 199837°F 200125%0%
Sep 2676°F51°F90°F 202136°F 200025%0%
Sep 2775°F50°F91°F 202139°F 200125%0%
Sep 2875°F50°F91°F 202137°F 200325%0%
Sep 2975°F50°F91°F 202332°F 200325%0%
Sep 3074°F49°F91°F 202337°F 200325%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.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:42 AM, sunset 7:46 PM
September 30
sunrise 7:10 AM, sunset 6:58 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00238444 (Trenton), public domain. Records: NOAA GHCN-Daily, station USW00053916, 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.