Grand County weather, town by town
8 places in Grand County, Colorado, 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 1907 to 2026. Station extremes, not official state records.
Grand County Weather Facts
Grand County has 8 places on myweatherrock (6 towns, 2 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 99°F at Williams Fk Dam on August 8, 2026. The coldest night is -49°F at Kremmling on February 1, 1951. The wettest day brought 3.2 inches of rain at Grand Lake 1 Nw on September 28, 1985. The biggest single-day snow measured 47.99 inches at Grand Lake 1 Nw on April 15, 1921. Those are station measurements from NOAA's daily records, 1907 to 2026, not official state records. By area the largest place is Winter Park, about 17 square miles.
About Grand County weather
The map on the Now tab shows every Grand 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 8 Grand County towns with station normals, the warmest month is July, when the day usually reaches 78°F, and the coldest is January, when the night usually falls to 0°F. August is the wettest, with rain on about 12 days. July afternoons run from about 76°F in Granby to 81°F in Kremmling. January nights run from about -1°F in Fraser to 5°F in Grand Lake.
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.
Grand County weather records
Measured at the NOAA stations serving these towns, daily records 1907 to 2026. Station extremes, not official state records.
Common questions about Grand County weather
- What is the hottest temperature recorded at a Grand County station?
- 99°F at Williams Fk Dam on August 8, 2026, in the NOAA daily station records myweatherrock holds (1907 to 2026).
- What is the coldest temperature recorded at a Grand County station?
- -49°F at Kremmling on February 1, 1951.
- What is the most rain a Grand County station has measured in one day?
- 3.2 inches at Grand Lake 1 Nw on September 28, 1985.
- What is the biggest one-day snowfall at a Grand County station?
- 47.99 inches at Grand Lake 1 Nw on April 15, 1921.
- How many Grand County towns have a weather page here?
- 8: 6 towns, 2 census-designated places. 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 Grand 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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