Chester climate

Chester Weather in September

NOAA 1991-2020 normals for Montgomery Orange AP, 16.3 km from Chester

Average highs run from 79°F on September 1 to 69°F on September 30, and lows from 56°F to 46°F. Normal precipitation for the month is 3.89 in over about 14 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 Chester, 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
51°F
Precipitation
3.89 in
Record high
96°FSep 8, 2015
Record low
29°FSep 29, 2000
Chance of a freeze
13%
Days of 90°F or more
1.3
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
57%
Humidity
73%
Dew point
53°F
Wind
3.8 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 179°F56°F91°F 201044°F 201745%0%
Sep 279°F56°F93°F 201040°F 201745%0%
Sep 378°F55°F92°F 201544°F 202445%0%
Sep 478°F55°F91°F 200844°F 202444%0%
Sep 578°F55°F91°F 201844°F 200044%0%
Sep 677°F54°F93°F 201841°F 200044%0%
Sep 777°F54°F93°F 201543°F 200044%0%
Sep 877°F54°F96°F 201543°F 202544%0%
Sep 977°F54°F93°F 201540°F 202444%0%
Sep 1076°F53°F90°F 200243°F 201744%0%
Sep 1176°F53°F94°F 201342°F 201244%0%
Sep 1276°F52°F93°F 200540°F 200644%0%
Sep 1375°F52°F93°F 200543°F 200244%0%
Sep 1475°F52°F91°F 200540°F 201444%0%
Sep 1575°F51°F88°F 200538°F 200144%0%
Sep 1674°F51°F86°F 201838°F 200144%0%
Sep 1774°F51°F85°F 200537°F 200744%0%
Sep 1873°F50°F84°F 200538°F 200744%0%
Sep 1973°F50°F86°F 200533°F 202044%0%
Sep 2073°F50°F83°F 199834°F 202044%0%
Sep 2172°F49°F86°F 200529°F 202044%0%
Sep 2272°F49°F88°F 200529°F 202044%0%
Sep 2372°F49°F90°F 201937°F 201444%0%
Sep 2471°F48°F89°F 201032°F 199844%0%
Sep 2571°F48°F89°F 201736°F 201344%0%
Sep 2670°F47°F90°F 200737°F 201644%0%
Sep 2770°F47°F91°F 199834°F 200044%0%
Sep 2870°F47°F87°F 201436°F 200044%0%
Sep 2969°F46°F83°F 201529°F 200044%0%
Sep 3069°F46°F77°F 202532°F 200044%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Chester, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:23 AM, sunset 7:30 PM
September 30
sunrise 6:53 AM, sunset 6:40 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004789 (Montgomery Orange AP), public domain. Records: NOAA GHCN-Daily, station USW00004789, 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.