Trinity County weather, town by town
14 places in Trinity County, California, 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 1974 to 2026. Station extremes, not official state records.
Trinity County Weather Facts
Trinity County has 14 places on myweatherrock (14 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 116°F at Trinity Rvr Hatchery on July 29, 2022. The coldest night is 4°F at Trinity Rvr Hatchery on December 22, 1990. The wettest day brought 6.44 inches of rain at Dunsmuir Trtmt Pl on December 31, 1996. The biggest single-day snow measured 30 inches at Dunsmuir Trtmt Pl on February 24, 2023. Those are station measurements from NOAA's daily records, 1974 to 2026, not official state records. By area the largest place is Hayfork, about 72 square miles.
About Trinity County weather
The map on the Now tab shows every Trinity 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 Trinity County towns with station normals, the warmest month is July, when the day usually reaches 94°F, and the coldest is December, when the night usually falls to 32°F. January is the wettest, with rain on about 15 days. July afternoons run from about 91°F in Coffee Creek to 94°F in Douglas.
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.
Trinity County weather records
Measured at the NOAA stations serving these towns, daily records 1974 to 2026. Station extremes, not official state records.
Common questions about Trinity County weather
- What is the hottest temperature recorded at a Trinity County station?
- 116°F at Trinity Rvr Hatchery on July 29, 2022, in the NOAA daily station records myweatherrock holds (1974 to 2026).
- What is the coldest temperature recorded at a Trinity County station?
- 4°F at Trinity Rvr Hatchery on December 22, 1990.
- What is the most rain a Trinity County station has measured in one day?
- 6.44 inches at Dunsmuir Trtmt Pl on December 31, 1996.
- What is the biggest one-day snowfall at a Trinity County station?
- 30 inches at Dunsmuir Trtmt Pl on February 24, 2023.
- How many Trinity County towns have a weather page here?
- 14: 14 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 Trinity 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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