Cascade County weather, town by town
24 places in Cascade 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 1892 to 2026. Station extremes, not official state records.
Cascade County Weather Facts
Cascade County has 24 places on myweatherrock (20 census-designated places, 3 towns, 1 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 111°F at Sun Rvr 4 S on July 23, 2006. The coldest night is -51°F at Sun Rvr 4 S on December 29, 1968. The wettest day brought 4.2 inches of rain at Adel on June 8, 1934. The biggest single-day snow measured 47.99 inches at Millegan 14 Se on December 27, 2003. Those are station measurements from NOAA's daily records, 1892 to 2026, not official state records. By area the largest place is Great Falls, about 23 square miles.
About Cascade County weather
The map on the Now tab shows every Cascade 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 24 Cascade County towns with station normals, the warmest month is July, when the day usually reaches 84°F, and the coldest is February, when the night usually falls to 14°F. May is the wettest, with rain on about 10 days. July afternoons run from about 71°F in Neihart to 88°F in Belt. February nights run from about 8°F in Monarch to 17°F in Simms.
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.
Cascade County weather records
Measured at the NOAA stations serving these towns, daily records 1892 to 2026. Station extremes, not official state records.
Common questions about Cascade County weather
- What is the hottest temperature recorded at a Cascade County station?
- 111°F at Sun Rvr 4 S on July 23, 2006, in the NOAA daily station records myweatherrock holds (1892 to 2026).
- What is the coldest temperature recorded at a Cascade County station?
- -51°F at Sun Rvr 4 S on December 29, 1968.
- What is the most rain a Cascade County station has measured in one day?
- 4.2 inches at Adel on June 8, 1934.
- What is the biggest one-day snowfall at a Cascade County station?
- 47.99 inches at Millegan 14 Se on December 27, 2003.
- How many Cascade County towns have a weather page here?
- 24: 20 census-designated places, 3 towns, 1 cities. 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 Cascade 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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