Effigy Mounds National Monument Weather Forecast
- 3
- 37
Snow Likely
- 9
- 19
Partly Sunny
- 8
- 23
Partly Sunny
- 10
- 25
Partly Sunny
- 20
- 31
Mostly Cloudy
- 21
- 36
Mostly Cloudy
Today 31 Dec Clayton
Snow likely with Pockets of freezing drizzle and drizzle. Snow accumulation little or no. Highs in the mid 30s. Temperature falling into the lower 30s this afternoon. Northwest Winds 10 to 15 Mph. Chance of precipitation 70 percent.
Tonight 31 Dec Clayton
Mostly cloudy with a chance of Flurries in the Evening, then partly cloudy after midnight. Much Colder with Lows around 6 above. North Winds 10 to 15 Mph.
Effigy Mounds National Monument Temperature Statistics
December Temperature
Prairie Du Chien Municipal Airport (5.6 miles)
Lowest 14 December, 2025
-4.7 °FAverage December
23.1 °FHighest 23 December, 2025
45 °F
Climate (2020–Present)
Prairie Du Chien Municipal Airport (5.6 miles)
Average Low 2020–2025
40.3 °FAverage 2020–2025
49.7 °FAverage High 2020–2025
59.2 °F