Marion County climate

Marion County Weather in September

NOAA 1991-2020 normals for Castleton 2 S, 13.2 km from Marion County

Average highs run from 81°F on September 1 to 72°F on September 30, and lows from 60°F to 51°F. Normal precipitation for the month is 3.56 in over about 8 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 Marion County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
77°F
Average low
56°F
Precipitation
3.56 in
Record high
97°FSep 2, 2011
Record low
37°FSep 24, 2012
Chance of a freeze
0%
Days of 90°F or more
2.5
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
49%
Humidity
71%
Dew point
55°F
Wind
8.1 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 181°F60°F96°F 201152°F 200928%0%
Sep 281°F60°F97°F 201153°F 200928%0%
Sep 380°F60°F97°F 201153°F 202428%0%
Sep 480°F60°F96°F 202645°F 199728%0%
Sep 580°F59°F94°F 200747°F 199728%0%
Sep 680°F59°F93°F 199849°F 201128%0%
Sep 779°F59°F93°F 200248°F 201728%0%
Sep 879°F59°F94°F 200245°F 202428%0%
Sep 979°F58°F93°F 200247°F 202428%0%
Sep 1079°F58°F95°F 201348°F 199928%0%
Sep 1178°F58°F92°F 201350°F 201728%0%
Sep 1278°F57°F91°F 201951°F 199728%0%
Sep 1378°F57°F89°F 199847°F 201428%0%
Sep 1478°F57°F90°F 199845°F 199628%0%
Sep 1577°F56°F93°F 202644°F 200728%0%
Sep 1677°F56°F92°F 202643°F 201128%0%
Sep 1777°F56°F91°F 202646°F 201428%0%
Sep 1876°F55°F91°F 201847°F 199928%0%
Sep 1976°F55°F91°F 202441°F 201228%0%
Sep 2076°F55°F91°F 201845°F 200328%0%
Sep 2175°F54°F94°F 202442°F 200628%0%
Sep 2275°F54°F94°F 201741°F 199929%0%
Sep 2374°F53°F92°F 201043°F 199929%0%
Sep 2474°F53°F91°F 200737°F 201229%0%
Sep 2574°F53°F91°F 201742°F 200129%0%
Sep 2673°F52°F91°F 201742°F 200029%0%
Sep 2773°F52°F89°F 199842°F 200029%0%
Sep 2873°F52°F89°F 199944°F 202230%0%
Sep 2972°F51°F89°F 202542°F 200030%0%
Sep 3072°F51°F90°F 201939°F 200330%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Marion County, 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 7:13 AM, sunset 8:16 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 USC00121326 (Castleton 2 S), public domain. Records: NOAA GHCN-Daily, station USW00053842, 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.