Roosevelt climate

Roosevelt Weather in September

NOAA 1991-2020 normals for Roosevelt Radio, 2.9 km from Roosevelt

Average highs run from 87°F on September 1 to 75°F on September 30, and lows from 46°F to 36°F. Normal precipitation for the month is 1.04 in over about 6 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 Roosevelt, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
41°F
Precipitation
1.04 in
Record high
99°FSep 7, 2020
Record low
22°FSep 25, 1970
Chance of a freeze
81%
Days of 90°F or more
2.8
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
41%
Humidity
44%
Dew point
31°F
Wind
5.8 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 187°F46°F95°F 195034°F 201920%0%
Sep 286°F45°F97°F 195832°F 201920%0%
Sep 386°F45°F95°F 195030°F 201920%0%
Sep 486°F45°F95°F 202235°F 196120%0%
Sep 585°F44°F96°F 196237°F 200420%0%
Sep 685°F44°F97°F 202236°F 196820%0%
Sep 785°F44°F99°F 202035°F 201020%0%
Sep 884°F43°F97°F 202235°F 200120%0%
Sep 984°F43°F94°F 202230°F 196220%0%
Sep 1084°F43°F93°F 195931°F 202020%0%
Sep 1183°F42°F93°F 195832°F 192820%0%
Sep 1283°F42°F93°F 195932°F 195120%0%
Sep 1382°F42°F94°F 199033°F 196720%0%
Sep 1482°F41°F94°F 199032°F 199320%0%
Sep 1582°F41°F91°F 199028°F 197020%0%
Sep 1681°F41°F92°F 200032°F 197120%0%
Sep 1781°F40°F92°F 193231°F 196819%0%
Sep 1880°F40°F92°F 192225°F 197119%0%
Sep 1980°F40°F94°F 193525°F 197119%0%
Sep 2079°F39°F92°F 195626°F 197819%0%
Sep 2179°F39°F87°F 193526°F 197819%0%
Sep 2278°F39°F88°F 193528°F 196819%0%
Sep 2378°F38°F87°F 195829°F 198519%0%
Sep 2477°F38°F88°F 194329°F 196119%0%
Sep 2577°F38°F88°F 200322°F 197019%0%
Sep 2677°F37°F88°F 192126°F 197019%0%
Sep 2776°F37°F88°F 201922°F 200719%0%
Sep 2876°F36°F88°F 202423°F 194519%0%
Sep 2975°F36°F89°F 193322°F 194519%0%
Sep 3075°F36°F88°F 195723°F 198519%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Roosevelt, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 6:48 AM, sunset 7:51 PM
September 30
sunrise 7:16 AM, sunset 7:04 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00427395 (Roosevelt Radio), public domain. Records: NOAA GHCN-Daily, station USC00425969, 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.