Marshall County climate

Marshall County Weather in September

NOAA 1991-2020 normals for Agassiz Refuge, 29.3 km from Marshall County

Average highs run from 76°F on September 1 to 63°F on September 30, and lows from 54°F to 41°F. Normal precipitation for the month is 2.70 in over about 10 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 Marshall County, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
70°F
Average low
48°F
Precipitation
2.70 in
Record high
96°FSep 1, 1921
Record low
15°FSep 18, 1929
Chance of a freeze
39%
Daylight
13 h 24 min to 11 h 42 min
Cloud cover
58%
Humidity
69%
Dew point
46°F
Wind
11.0 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 176°F54°F96°F 192133°F 194634%0%
Sep 276°F54°F96°F 198329°F 191734%0%
Sep 376°F53°F95°F 202332°F 197434%0%
Sep 475°F53°F94°F 192230°F 191434%0%
Sep 575°F53°F96°F 197832°F 192434%0%
Sep 675°F52°F95°F 197632°F 195634%0%
Sep 774°F52°F93°F 197633°F 198634%0%
Sep 874°F52°F95°F 197830°F 195634%0%
Sep 973°F51°F92°F 197831°F 191734%
Sep 1073°F51°F95°F 195228°F 191734%
Sep 1172°F51°F93°F 195225°F 195534%
Sep 1272°F50°F88°F 195229°F 193733%
Sep 1372°F50°F93°F 192722°F 192333%
Sep 1471°F49°F89°F 192727°F 195633%
Sep 1571°F49°F87°F 192328°F 198433%
Sep 1670°F48°F93°F 202525°F 197333%
Sep 1770°F48°F91°F 192023°F 195933%
Sep 1869°F47°F88°F 198915°F 192932%
Sep 1969°F47°F89°F 197025°F 192932%
Sep 2068°F46°F88°F 197024°F 191832%
Sep 2168°F46°F89°F 192225°F 193432%
Sep 2267°F45°F95°F 192215°F 191331%
Sep 2367°F45°F89°F 200723°F 191331%
Sep 2466°F44°F85°F 199025°F 194231%
Sep 2566°F44°F89°F 193822°F 198531%
Sep 2665°F43°F87°F 197419°F 198431%
Sep 2765°F43°F89°F 195221°F 193531%
Sep 2864°F42°F85°F 197021°F 194230%
Sep 2964°F42°F90°F 202519°F 198430%
Sep 3063°F41°F89°F 202522°F 193430%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Marshall County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:43 AM, sunset 8:07 PM
September 30
sunrise 7:24 AM, sunset 7:06 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00210050 (Agassiz Refuge), public domain. Records: NOAA GHCN-Daily, station USC00216787, 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.