St Charles Weather Forecast
- 76
- 87
Chance Thunderstorms
- 70
- 91
Chance Thunderstorms
- 67
- 82
Thunderstorms Likely
- 67
- 84
Partly Sunny
- 69
- 86
Slight Chance Thunderstorms
- 69
- 89
Chance Thunderstorms
Today 22 Jul Winona
Mostly cloudy in the Morning, then becoming partly sunny. Humid with Highs in the upper 80s. South Winds 10 to 15 Mph. Heat index Values in the mid 90s in the afternoon.
Tonight 22 Jul Winona
Mostly cloudy. Areas of smoke. Near steady temperature around 70. Southeast Winds 5 to 10 Mph.
St Charles Temperature Statistics
July Temperature
Winona, Winona Municipal Airport-Max Conrad Field (19.3 miles)
Lowest 17 July, 2025
53.6 °FAverage July
73.9 °FHighest 4 July, 2025
91.4 °F
Climate (2020–Present)
Winona, Winona Municipal Airport-Max Conrad Field (19.3 miles)
Average Low 2020–2025
39.1 °FAverage 2020–2025
48.2 °FAverage High 2020–2025
57.3 °F