Stillwater County weather, town by town
7 places in Stillwater County, Montana, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1909 to 2026. Station extremes, not official state records.
Stillwater County Weather Facts
Stillwater County has 7 places on myweatherrock (6 census-designated places, 1 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 110°F at Ryegate on July 13, 2026. The coldest night is -49°F at Ryegate on February 7, 1914. The wettest day brought 4 inches of rain at Mystic Lake on March 24, 1945. The biggest single-day snow measured 42.99 inches at Mystic Lake on April 23, 1958. Those are station measurements from NOAA's daily records, 1909 to 2026, not official state records. By area the largest place is Absarokee, about 2 square miles.
About Stillwater County weather
The map on the Now tab shows every Stillwater County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 7 Stillwater County towns with station normals, the warmest month is July, when the day usually reaches 84°F, and the coldest is January, when the night usually falls to 15°F. May is the wettest, with rain on about 12 days. July afternoons run from about 75°F in Nye to 89°F in Rapelje. January nights run from about 12°F in Absarokee to 22°F in Fishtail.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Stillwater County weather records
Measured at the NOAA stations serving these towns, daily records 1909 to 2026. Station extremes, not official state records.
Common questions about Stillwater County weather
- What is the hottest temperature recorded at a Stillwater County station?
- 110°F at Ryegate on July 13, 2026, in the NOAA daily station records myweatherrock holds (1909 to 2026).
- What is the coldest temperature recorded at a Stillwater County station?
- -49°F at Ryegate on February 7, 1914.
- What is the most rain a Stillwater County station has measured in one day?
- 4 inches at Mystic Lake on March 24, 1945.
- What is the biggest one-day snowfall at a Stillwater County station?
- 42.99 inches at Mystic Lake on April 23, 1958.
- How many Stillwater County towns have a weather page here?
- 7: 6 census-designated places, 1 towns. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Stillwater County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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