Winona County weather, town by town
14 places in Winona County, Minnesota, 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 1936 to 2026. Station extremes, not official state records.
Winona County Weather Facts
Winona County has 14 places on myweatherrock (11 cities, 3 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 111°F at Minnesota City Dam 5 on July 13, 1995. The coldest night is -44°F at Trempealeau Dam 6 on January 30, 1951. The wettest day brought 11.45 inches of rain at Altura 5W on August 19, 2007. The biggest single-day snow measured 17.99 inches at Altura 5W on December 12, 2010. Those are station measurements from NOAA's daily records, 1936 to 2026, not official state records. By area the largest place is Winona, about 19 square miles.
About Winona County weather
The map on the Now tab shows every Winona 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 14 Winona County towns with station normals, the warmest month is July, when the day usually reaches 84°F, and the coldest is January, when the night usually falls to 9°F. May is the wettest, with rain on about 13 days. July afternoons run from about 82°F in Homer to 85°F in Altura. January nights run from about 8°F in Goodview to 13°F in Dakota.
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.
Winona County weather records
Measured at the NOAA stations serving these towns, daily records 1936 to 2026. Station extremes, not official state records.
Common questions about Winona County weather
- What is the hottest temperature recorded at a Winona County station?
- 111°F at Minnesota City Dam 5 on July 13, 1995, in the NOAA daily station records myweatherrock holds (1936 to 2026).
- What is the coldest temperature recorded at a Winona County station?
- -44°F at Trempealeau Dam 6 on January 30, 1951.
- What is the most rain a Winona County station has measured in one day?
- 11.45 inches at Altura 5W on August 19, 2007.
- What is the biggest one-day snowfall at a Winona County station?
- 17.99 inches at Altura 5W on December 12, 2010.
- How many Winona County towns have a weather page here?
- 14: 11 cities, 3 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 Winona 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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