Chambersburg climate

Chambersburg Weather in September

NOAA 1991-2020 normals for Chambersburg 1 Ese, 1.9 km from Chambersburg

Average highs run from 80°F on September 1 to 70°F on September 30, and lows from 60°F to 51°F. Normal precipitation for the month is 4.14 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 Chambersburg, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
76°F
Average low
56°F
Precipitation
4.14 in
Record high
97°FSep 2, 2010
Record low
37°FSep 30, 2000
Chance of a freeze
0%
Days of 90°F or more
1.4
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
57%
Humidity
71%
Dew point
54°F
Wind
5.1 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 180°F60°F96°F 201051°F 200928%0%
Sep 280°F60°F97°F 201052°F 200928%0%
Sep 380°F60°F97°F 201052°F 202128%0%
Sep 480°F60°F97°F 202350°F 202428%0%
Sep 579°F59°F96°F 202352°F 202428%0%
Sep 679°F59°F96°F 202345°F 200028%0%
Sep 779°F59°F93°F 201050°F 200028%0%
Sep 878°F58°F94°F 201646°F 202528%0%
Sep 978°F58°F94°F 201647°F 202428%0%
Sep 1078°F58°F94°F 201648°F 201728%0%
Sep 1177°F57°F93°F 201947°F 201228%0%
Sep 1277°F57°F93°F 201952°F 199928%0%
Sep 1377°F57°F89°F 200550°F 200228%0%
Sep 1476°F56°F90°F 201646°F 201428%0%
Sep 1576°F56°F89°F 200543°F 200128%0%
Sep 1676°F56°F88°F 201944°F 200128%0%
Sep 1775°F55°F87°F 200542°F 200729%0%
Sep 1875°F55°F87°F 202143°F 201329%0%
Sep 1975°F55°F89°F 202544°F 202029%0%
Sep 2074°F54°F87°F 201638°F 202029%0%
Sep 2174°F54°F88°F 201939°F 202029%0%
Sep 2273°F54°F95°F 201040°F 202029%0%
Sep 2373°F53°F92°F 201043°F 201429%0%
Sep 2472°F53°F95°F 201042°F 201329%0%
Sep 2572°F52°F92°F 201744°F 201230%0%
Sep 2672°F52°F91°F 200743°F 200130%0%
Sep 2771°F52°F92°F 201739°F 200030%0%
Sep 2871°F51°F89°F 201944°F 200130%0%
Sep 2970°F51°F83°F 201938°F 200030%0%
Sep 3070°F51°F79°F 202537°F 200030%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Chambersburg, 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 6:39 AM, sunset 7:42 PM
September 30
sunrise 7:06 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 USC00361354 (Chambersburg 1 Ese), public domain. Records: NOAA GHCN-Daily, station USW00093706, 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.