Castalia Weather Forecast
- -2
- 20
Mostly Sunny
- 1
- 9
Cold
- 20
- 23
Wintry Mix
- 29
- 35
Chance Rain
- 30
- 38
Mostly Cloudy
- 21
- 38
Chance Rain
Today 11 Dec Winneshiek
Mostly sunny with a 50 percent chance of snow. Snow accumulation little or no. Cold with Highs in the lower 20s. Temperature falling to around 10 above this afternoon. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph.
Tonight 11 Dec Winneshiek
Partly cloudy. Much Colder with Lows around 3 below. Northwest Winds 10 to 20 Mph. Gusts up to 30 Mph in the evening. Wind chill Values as low as 20 below.
Castalia Temperature Statistics
December Temperature
Decorah (11.8 miles)
Lowest 1 December, 2024
6.8 °FAverage December
25.8 °FHighest 7 December, 2024
55.4 °F
Climate (2019–Present)
Decorah (11.8 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2019–2024
39.3 °FAverage 2019–2024
47.9 °FAverage High 2019–2024
56.3 °F