Grant County weather, town by town
9 places in Grant County, Oregon, 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 1903 to 2025. Station extremes, not official state records.
Grant County Weather Facts
Grant County has 9 places on myweatherrock (7 cities, 2 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 112°F at John Day on August 5, 1961. The coldest night is -26°F at Gold Center on December 21, 1990. The wettest day brought 2.4 inches of rain at Gold Center on May 20, 2020. The biggest single-day snow measured 10 inches at Spray on November 6, 1973. Those are station measurements from NOAA's daily records, 1903 to 2025, not official state records. By area the largest place is John Day, about 2 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 9 Grant County towns with station normals, the warmest month is July, when the day usually reaches 85°F, and the coldest is December, when the night usually falls to 23°F. December is the wettest, with rain on about 12 days. July afternoons run from about 74°F in Monument to 92°F in Dayville. December nights run from about 20°F in Granite to 27°F in Dayville.
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 1903 to 2025. Station extremes, not official state records.
Common questions about Grant County weather
- What is the hottest temperature recorded at a Grant County station?
- 112°F at John Day on August 5, 1961, in the NOAA daily station records myweatherrock holds (1903 to 2025).
- What is the coldest temperature recorded at a Grant County station?
- -26°F at Gold Center on December 21, 1990.
- What is the most rain a Grant County station has measured in one day?
- 2.4 inches at Gold Center on May 20, 2020.
- What is the biggest one-day snowfall at a Grant County station?
- 10 inches at Spray on November 6, 1973.
- How many Grant County towns have a weather page here?
- 9: 7 cities, 2 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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