Sanilac County weather, town by town
13 places in Sanilac County, Michigan, 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 1899 to 2026. Station extremes, not official state records.
Sanilac County Weather Facts
Sanilac County has 13 places on myweatherrock (9 villages, 3 cities, 1 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 108°F at Cass City 1 Ssw on July 15, 1977. The coldest night is -28°F at Cass City 1 Ssw on February 20, 2015. The wettest day brought 7.75 inches of rain at Sandusky on September 11, 1986. The biggest single-day snow measured 18.5 inches at Harbor Beach 1 Sse on January 1, 1985. Those are station measurements from NOAA's daily records, 1899 to 2026, not official state records. By area the largest place is Snover, about 3 square miles.
About Sanilac County weather
The map on the Now tab shows every Sanilac 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 13 Sanilac County towns with station normals, the warmest month is July, when the day usually reaches 79°F, and the coldest is February, when the night usually falls to 16°F. January is the wettest, with rain on about 14 days. July afternoons run from about 76°F in Forestville to 82°F in Marlette.
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.
Sanilac County weather records
Measured at the NOAA stations serving these towns, daily records 1899 to 2026. Station extremes, not official state records.
Common questions about Sanilac County weather
- What is the hottest temperature recorded at a Sanilac County station?
- 108°F at Cass City 1 Ssw on July 15, 1977, in the NOAA daily station records myweatherrock holds (1899 to 2026).
- What is the coldest temperature recorded at a Sanilac County station?
- -28°F at Cass City 1 Ssw on February 20, 2015.
- What is the most rain a Sanilac County station has measured in one day?
- 7.75 inches at Sandusky on September 11, 1986.
- What is the biggest one-day snowfall at a Sanilac County station?
- 18.5 inches at Harbor Beach 1 Sse on January 1, 1985.
- How many Sanilac County towns have a weather page here?
- 13: 9 villages, 3 cities, 1 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 Sanilac 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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