Grant County weather, town by town
25 places in Grant County, Washington, 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.
Grant County Weather Facts
Grant County has 25 places on myweatherrock (11 census-designated places, 10 cities, 4 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 116°F at Ephrata Ap on June 29, 2021. The coldest night is -30°F at Wilbur on February 9, 1933. The wettest day brought 2.5 inches of rain at Moses Lake Grant Co Ap on February 1, 1961. The biggest single-day snow measured 14.02 inches at Wilbur on February 1, 1899. Those are station measurements from NOAA's daily records, 1892 to 2026, not official state records. By area the largest place is Moses Lake, about 18 square miles.
About Grant County weather
The map on the Now tab shows every Grant 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 25 Grant County towns with station normals, the warmest month is July, when the day usually reaches 90°F, and the coldest is December, when the night usually falls to 25°F. December is the wettest, with rain on about 10 days. July afternoons run from about 86°F in Hartline to 92°F in Beverly. December nights run from about 21°F in Hartline to 29°F in Beverly.
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.
Grant 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 Grant County weather
- What is the hottest temperature recorded at a Grant County station?
- 116°F at Ephrata Ap on June 29, 2021, in the NOAA daily station records myweatherrock holds (1892 to 2026).
- What is the coldest temperature recorded at a Grant County station?
- -30°F at Wilbur on February 9, 1933.
- What is the most rain a Grant County station has measured in one day?
- 2.5 inches at Moses Lake Grant Co Ap on February 1, 1961.
- What is the biggest one-day snowfall at a Grant County station?
- 14.02 inches at Wilbur on February 1, 1899.
- How many Grant County towns have a weather page here?
- 25: 11 census-designated places, 10 cities, 4 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 Grant 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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