Valley County weather, town by town
7 places in Valley 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 1893 to 2026. Station extremes, not official state records.
Valley County Weather Facts
Valley County has 7 places on myweatherrock (3 towns, 3 census-designated places, 1 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 113°F at Glasgow #2 on July 31, 1900. The coldest night is -59°F at Glasgow #2 on February 15, 1936. The wettest day brought 3.99 inches of rain at Ft Peck Pwr Plt on June 18, 1964. The biggest single-day snow measured 15 inches at Hinsdale 4 Sw on November 6, 2000. Those are station measurements from NOAA's daily records, 1893 to 2026, not official state records. By area the largest place is St. Marie, about 23 square miles.
About Valley County weather
The map on the Now tab shows every Valley 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 Valley County towns with station normals, the warmest month is July, when the day usually reaches 86°F, and the coldest is January, when the night usually falls to 6°F. June is the wettest, with rain on about 9 days. July afternoons run from about 81°F in Opheim to 88°F in Fort Peck. January nights run from about 1°F in Opheim to 7°F in Fort Peck.
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.
Valley County weather records
Measured at the NOAA stations serving these towns, daily records 1893 to 2026. Station extremes, not official state records.
Common questions about Valley County weather
- What is the hottest temperature recorded at a Valley County station?
- 113°F at Glasgow #2 on July 31, 1900, in the NOAA daily station records myweatherrock holds (1893 to 2026).
- What is the coldest temperature recorded at a Valley County station?
- -59°F at Glasgow #2 on February 15, 1936.
- What is the most rain a Valley County station has measured in one day?
- 3.99 inches at Ft Peck Pwr Plt on June 18, 1964.
- What is the biggest one-day snowfall at a Valley County station?
- 15 inches at Hinsdale 4 Sw on November 6, 2000.
- How many Valley County towns have a weather page here?
- 7: 3 towns, 3 census-designated places, 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 Valley 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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