Rolla climate

Rolla Weather in September

NOAA 1991-2020 normals for Rolla 1NE, 3.5 km from Rolla

Average highs run from 71°F on September 1 to 59°F on September 30, and lows from 48°F to 37°F. Normal precipitation for the month is 1.74 in over about 7 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 Rolla, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
65°F
Average low
43°F
Precipitation
1.74 in
Record high
98°FSep 7, 1976
Record low
17°FSep 26, 1965
Chance of a freeze
73%
Daylight
13 h 25 min to 11 h 42 min
Cloud cover
59%
Humidity
65%
Dew point
43°F
Wind
10.5 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 171°F48°F91°F 198334°F 194625%0%
Sep 271°F48°F95°F 196028°F 194625%0%
Sep 370°F47°F94°F 198330°F 196125%0%
Sep 470°F47°F92°F 194530°F 197425%0%
Sep 570°F47°F94°F 194534°F 196225%0%
Sep 669°F46°F96°F 197832°F 195625%0%
Sep 769°F46°F98°F 197635°F 194625%0%
Sep 868°F46°F90°F 195931°F 195625%
Sep 968°F45°F93°F 197830°F 200625%
Sep 1068°F45°F89°F 199426°F 195524%
Sep 1167°F45°F88°F 193928°F 194024%
Sep 1267°F44°F91°F 196628°F 190524%
Sep 1366°F44°F87°F 195924°F 197024%
Sep 1466°F43°F93°F 194623°F 195624%
Sep 1566°F43°F85°F 194625°F 194524%
Sep 1665°F43°F88°F 195229°F 195923%
Sep 1765°F42°F86°F 197929°F 195923%
Sep 1864°F42°F93°F 193929°F 190423%
Sep 1964°F41°F86°F 197020°F 195223%
Sep 2063°F41°F88°F 196027°F 190423%
Sep 2163°F41°F93°F 193826°F 190423%
Sep 2262°F40°F95°F 193823°F 194722%
Sep 2362°F40°F80°F 200725°F 198322%
Sep 2462°F39°F84°F 194923°F 194722%
Sep 2561°F39°F95°F 193820°F 193921%
Sep 2661°F38°F89°F 196317°F 196521%
Sep 2760°F38°F89°F 195219°F 194221%
Sep 2860°F38°F84°F 190518°F 194220%
Sep 2959°F37°F84°F 190517°F 194520%
Sep 3059°F37°F83°F 200725°F 193920%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Rolla, 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 (CDT).

September 1
sunrise 6:55 AM, sunset 8:20 PM
September 30
sunrise 7:37 AM, sunset 7:19 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00327664 (Rolla 1NE), public domain. Records: NOAA GHCN-Daily, station USC00327664, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.