Morrow County weather, town by town
5 places in Morrow 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 1893 to 2026. Station extremes, not official state records.
Morrow County Weather Facts
Morrow County has 5 places on myweatherrock (4 cities, 1 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 117°F at Hermiston 2 Nw on June 30, 2021. The coldest night is -19°F at Heppner on January 10, 1909. The wettest day brought 2.75 inches of rain at Heppner on October 15, 1905. The biggest single-day snow measured 12.01 inches at Heppner on December 10, 1919. Those are station measurements from NOAA's daily records, 1893 to 2026, not official state records. By area the largest place is Boardman, about 4 square miles.
About Morrow County weather
The map on the Now tab shows every Morrow 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 5 Morrow County towns with station normals, the warmest month is July, when the day usually reaches 89°F, and the coldest is December, when the night usually falls to 27°F. December is the wettest, with rain on about 11 days. July afternoons run from about 87°F in Heppner to 91°F in Boardman.
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.
Morrow 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 Morrow County weather
- What is the hottest temperature recorded at a Morrow County station?
- 117°F at Hermiston 2 Nw on June 30, 2021, in the NOAA daily station records myweatherrock holds (1893 to 2026).
- What is the coldest temperature recorded at a Morrow County station?
- -19°F at Heppner on January 10, 1909.
- What is the most rain a Morrow County station has measured in one day?
- 2.75 inches at Heppner on October 15, 1905.
- What is the biggest one-day snowfall at a Morrow County station?
- 12.01 inches at Heppner on December 10, 1919.
- How many Morrow County towns have a weather page here?
- 5: 4 cities, 1 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 Morrow 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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