Chester climate

Chester Weather in September

NOAA 1991-2020 normals for Hopewell, 15.9 km from Chester

Average highs run from 86°F on September 1 to 78°F on September 30, and lows from 67°F to 58°F. Normal precipitation for the month is 5.15 in over about 9 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.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
82°F
Average low
63°F
Precipitation
5.15 in
Record high
99°FSep 7, 2023
Record low
45°FSep 21, 2020
Chance of a freeze
0%
Days of 90°F or more
5.0
Daylight
12 h 58 min to 11 h 50 min
Cloud cover
54%
Humidity
73%
Dew point
60°F
Wind
4.7 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°F67°F98°F 202654°F 202528%0%
Sep 286°F67°F98°F 201055°F 202128%0%
Sep 385°F67°F98°F 202655°F 202127%0%
Sep 485°F67°F96°F 202357°F 200927%0%
Sep 585°F66°F96°F 202355°F 201027%0%
Sep 685°F66°F98°F 202354°F 201027%0%
Sep 784°F66°F99°F 202352°F 201727%0%
Sep 884°F66°F94°F 202352°F 201727%0%
Sep 984°F65°F96°F 201650°F 201727%0%
Sep 1084°F65°F89°F 201651°F 201727%0%
Sep 1183°F65°F94°F 201952°F 201227%0%
Sep 1283°F65°F98°F 201952°F 201226%0%
Sep 1383°F64°F90°F 201350°F 201526%0%
Sep 1483°F64°F94°F 201650°F 201526%0%
Sep 1582°F64°F91°F 200849°F 201327%0%
Sep 1682°F63°F92°F 201948°F 201327%0%
Sep 1782°F63°F94°F 201049°F 200727%0%
Sep 1881°F63°F90°F 200547°F 201327%0%
Sep 1981°F62°F90°F 200547°F 201327%0%
Sep 2081°F62°F92°F 200547°F 200627%0%
Sep 2180°F62°F90°F 202245°F 202027%0%
Sep 2280°F61°F92°F 202245°F 202027%0%
Sep 2380°F61°F96°F 200548°F 202227%0%
Sep 2479°F61°F97°F 201048°F 201227%0%
Sep 2579°F60°F96°F 201047°F 201227%0%
Sep 2679°F60°F95°F 201048°F 201327%0%
Sep 2779°F59°F91°F 200748°F 202227%0%
Sep 2878°F59°F94°F 201947°F 202227%0%
Sep 2978°F58°F92°F 201946°F 200327%0%
Sep 3078°F58°F85°F 201546°F 200327%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.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:40 AM, sunset 7:38 PM
September 30
sunrise 7:04 AM, sunset 6:54 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00444101 (Hopewell), public domain. Records: NOAA GHCN-Daily, station USC00446656, 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.