Orange County weather, town by town
45 places in Orange 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 1906 to 2026. Station extremes, not official state records.
Orange County Weather Facts
Orange County has 45 places on myweatherrock (34 cities, 11 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 Fullerton Muni Ap on July 6, 2018. The coldest night is 16°F at Santa Ana Fire Stn on January 12, 1989. The wettest day brought 6.73 inches of rain at Anaheim on January 18, 2010. The biggest single-day snow measured 15.98 inches at Mt Wilson Cbs on December 29, 1974. Those are station measurements from NOAA's daily records, 1906 to 2026, not official state records. By area the largest place is Irvine, about 66 square miles.
About Orange County weather
The map on the Now tab shows every Orange 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 45 Orange County towns with station normals, the warmest month is August, when the day usually reaches 85°F, and the coldest is December, when the night usually falls to 47°F. February is the wettest, with rain on about 6 days. August afternoons run from about 73°F in Aliso Viejo to 90°F in Coto de Caza. December nights run from about 38°F in San Clemente to 50°F in Aliso Viejo.
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.
Orange County weather records
Measured at the NOAA stations serving these towns, daily records 1906 to 2026. Station extremes, not official state records.
Common questions about Orange County weather
- What is the hottest temperature recorded at a Orange County station?
- 116°F at Fullerton Muni Ap on July 6, 2018, in the NOAA daily station records myweatherrock holds (1906 to 2026).
- What is the coldest temperature recorded at a Orange County station?
- 16°F at Santa Ana Fire Stn on January 12, 1989.
- What is the most rain a Orange County station has measured in one day?
- 6.73 inches at Anaheim on January 18, 2010.
- What is the biggest one-day snowfall at a Orange County station?
- 15.98 inches at Mt Wilson Cbs on December 29, 1974.
- How many Orange County towns have a weather page here?
- 45: 34 cities, 11 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 Orange 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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