Clam Lake weather by month
What a typical year looks like in Clam Lake, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Clam Lake 4w, 6 km from Clam Lake; records cover 2008–2026.
The year at a glance
- Precipitation a year
- 33.9 in862 mm
- Snow a year
- Rare
- Last spring freeze
- May 20
- First fall freeze
- Sep 30
- Heating degree days
- 9,411
- Cooling degree days
- 201
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −26°−32° (heating, 99%) and 86°30° (cooling, 1%).
Month by month
Clam Lake in January
Highs average 20°−7° and lows 1°−17°, with 0.99 in25 mm of precipitation in a typical January.
- Record high
- 47°8° (2012)
- Record low
- −38°−39° (2026)
- Heating degree days
- 1700
- Cooling degree days
- 0
Clam Lake in February
Highs average 25°−4° and lows 1°−17°, with 0.94 in24 mm of precipitation in a typical February.
- Record high
- 58°14° (2017)
- Record low
- −38°−39° (2019)
- Heating degree days
- 1457
- Cooling degree days
- 0
Clam Lake in March
Highs average 36°2° and lows 13°−11°, with 1.9 in49 mm of precipitation in a typical March.
- Record high
- 76°24° (2012)
- Record low
- −30°−34° (2014)
- Heating degree days
- 1252
- Cooling degree days
- 0
Clam Lake in April
Highs average 49°10° and lows 27°−3°, with 3.1 in79 mm of precipitation in a typical April.
- Record high
- 79°26° (2021)
- Record low
- −5°−21° (2018)
- Heating degree days
- 801
- Cooling degree days
- 0
Clam Lake in May
Highs average 63°17° and lows 40°5°, with 4.1 in104 mm of precipitation in a typical May.
- Record high
- 90°32° (2018)
- Record low
- 23°−5° (2013)
- Heating degree days
- 418
- Cooling degree days
- 6
Clam Lake in June
Highs average 73°23° and lows 51°11°, with 4.2 in106 mm of precipitation in a typical June.
- Record high
- 91°33° (2011)
- Record low
- 34°1° (2012)
- Heating degree days
- 126
- Cooling degree days
- 35
Clam Lake in July
Highs average 76°25° and lows 56°13°, with 4 in101 mm of precipitation in a typical July.
- Record high
- 92°33° (2012)
- Record low
- 42°6° (2015)
- Heating degree days
- 50
- Cooling degree days
- 87
Clam Lake in August
Highs average 75°24° and lows 54°12°, with 4.3 in108 mm of precipitation in a typical August.
- Record high
- 90°32° (2013)
- Record low
- 39°4° (2009)
- Heating degree days
- 84
- Cooling degree days
- 56
Clam Lake in September
Highs average 67°19° and lows 46°8°, with 3.6 in92 mm of precipitation in a typical September.
- Record high
- 90°32° (2023)
- Record low
- 27°−3° (2018)
- Heating degree days
- 278
- Cooling degree days
- 17
Clam Lake in OctoberThis month
Highs average 53°11° and lows 34°1°, with 3.4 in86 mm of precipitation in a typical October.
- Record high
- 83°28° (2023)
- Record low
- 8°−13° (2020)
- Heating degree days
- 679
- Cooling degree days
- 0
Clam Lake in November
Highs average 37°3° and lows 22°−6°, with 2 in51 mm of precipitation in a typical November.
- Record high
- 72°22° (2020)
- Record low
- −13°−25° (2014)
- Heating degree days
- 1064
- Cooling degree days
- 0
Clam Lake in December
Highs average 25°−4° and lows 8°−13°, with 1.4 in37 mm of precipitation in a typical December.
- Record high
- 55°13° (2021)
- Record low
- −32°−36° (2017)
- Heating degree days
- 1502
- Cooling degree days
- 0