Sheridan County Weather in September
Average highs run from 80°F on September 1 to 70°F on September 30, and lows from 51°F to 39°F. Normal precipitation for the month is 1.43 in over about 6 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 76°F
- Average low
- 45°F
- Precipitation
- 1.43 in
- Record high
- 105°FSep 9, 1931
- Record low
- 1°FSep 25, 1926
- Chance of a freeze
- 53%
- Days of 90°F or more
- 3.2
- Daylight
- 13 h 09 min to 11 h 47 min
- Cloud cover
- 46%
- Humidity
- 51%
- Dew point
- 42°F
- Wind
- 11.0 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 80°F | 51°F | 103°F 1983 | 33°F 1956 | 20% |
| Sep 2 | 80°F | 51°F | 104°F 1983 | 29°F 1952 | 20% |
| Sep 3 | 80°F | 50°F | 100°F 2001 | 27°F 1928 | 20% |
| Sep 4 | 80°F | 50°F | 101°F 1931 | 29°F 1935 | 20% |
| Sep 5 | 79°F | 50°F | 101°F 2022 | 28°F 1929 | 20% |
| Sep 6 | 79°F | 49°F | 99°F 1931 | 28°F 1956 | 20% |
| Sep 7 | 79°F | 49°F | 102°F 1931 | 32°F 1918 | 20% |
| Sep 8 | 78°F | 49°F | 99°F 1931 | 28°F 1943 | 20% |
| Sep 9 | 78°F | 48°F | 105°F 1931 | 25°F 1941 | 20% |
| Sep 10 | 78°F | 48°F | 99°F 2021 | 25°F 1962 | 20% |
| Sep 11 | 77°F | 47°F | 98°F 2017 | 26°F 1940 | 20% |
| Sep 12 | 77°F | 47°F | 98°F 1939 | 29°F 1989 | 20% |
| Sep 13 | 77°F | 47°F | 95°F 1935 | 25°F 1993 | 20% |
| Sep 14 | 76°F | 46°F | 96°F 1935 | 21°F 1961 | 20% |
| Sep 15 | 76°F | 46°F | 98°F 1948 | 18°F 1916 | 20% |
| Sep 16 | 76°F | 45°F | 94°F 2018 | 23°F 1918 | 20% |
| Sep 17 | 75°F | 45°F | 98°F 2000 | 25°F 1916 | 20% |
| Sep 18 | 75°F | 45°F | 98°F 1984 | 23°F 1918 | 20% |
| Sep 19 | 75°F | 44°F | 99°F 1984 | 25°F 1922 | 20% |
| Sep 20 | 74°F | 44°F | 97°F 1914 | 14°F 1918 | 20% |
| Sep 21 | 74°F | 43°F | 96°F 1922 | 20°F 1927 | 20% |
| Sep 22 | 73°F | 43°F | 95°F 1939 | 19°F 1916 | 20% |
| Sep 23 | 73°F | 42°F | 94°F 1935 | 23°F 1995 | 20% |
| Sep 24 | 73°F | 42°F | 92°F 2018 | 21°F 1926 | 19% |
| Sep 25 | 72°F | 41°F | 91°F 1924 | 1°F 1926 | 19% |
| Sep 26 | 72°F | 41°F | 98°F 1914 | 15°F 1926 | 19% |
| Sep 27 | 71°F | 41°F | 96°F 2021 | 19°F 1928 | 19% |
| Sep 28 | 71°F | 40°F | 91°F 2021 | 22°F 1934 | 18% |
| Sep 29 | 71°F | 40°F | 93°F 1938 | 16°F 1920 | 18% |
| Sep 30 | 70°F | 39°F | 92°F 1980 | 18°F 1920 | 18% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MDT).
- September 1
- sunrise 6:15 AM, sunset 7:24 PM
- September 30
- sunrise 6:46 AM, sunset 6:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00253710 (Hay Springs), public domain. Records: NOAA GHCN-Daily, station USC00253355, 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.