Cornell weather by month
What a typical year looks like in Cornell, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Holcombe, 7 km from Cornell; records cover 1942–2026.
The year at a glance
- Precipitation a year
- 33.3 in847 mm
- Snow a year
- Rare
- Last spring freeze
- May 11
- First fall freeze
- Sep 30
- Heating degree days
- 8,454
- Cooling degree days
- 376
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −21°−29° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Cornell in January
Highs average 22°−5° and lows 2°−16°, with 1 in26 mm of precipitation in a typical January.
- Record high
- 53°12° (1942)
- Record low
- −44°−42° (1977)
- Heating degree days
- 1634
- Cooling degree days
- 0
Cornell in February
Highs average 28°−2° and lows 6°−15°, with 1 in26 mm of precipitation in a typical February.
- Record high
- 60°16° (2024)
- Record low
- −45°−43° (1996)
- Heating degree days
- 1357
- Cooling degree days
- 0
Cornell in March
Highs average 39°4° and lows 18°−8°, with 1.7 in44 mm of precipitation in a typical March.
- Record high
- 81°27° (1986)
- Record low
- −40° (1962)
- Heating degree days
- 1125
- Cooling degree days
- 0
Cornell in April
Highs average 54°12° and lows 32°0°, with 3 in76 mm of precipitation in a typical April.
- Record high
- 90°32° (1970)
- Record low
- 1°−17° (1975)
- Heating degree days
- 663
- Cooling degree days
- 0
Cornell in May
Highs average 66°19° and lows 45°7°, with 3.9 in98 mm of precipitation in a typical May.
- Record high
- 94°34° (1959)
- Record low
- 20°−7° (1947)
- Heating degree days
- 314
- Cooling degree days
- 15
Cornell in June
Highs average 75°24° and lows 54°12°, with 4.7 in120 mm of precipitation in a typical June.
- Record high
- 95°35° (1956)
- Record low
- 27°−3° (1945)
- Heating degree days
- 84
- Cooling degree days
- 75
Cornell in July
Highs average 80°26° and lows 59°15°, with 3.9 in98 mm of precipitation in a typical July.
- Record high
- 99°37° (1988)
- Record low
- 36°2° (1947)
- Heating degree days
- 21
- Cooling degree days
- 150
Cornell in August
Highs average 77°25° and lows 56°14°, with 4.3 in108 mm of precipitation in a typical August.
- Record high
- 100°38° (1964)
- Record low
- 32°0° (1967)
- Heating degree days
- 44
- Cooling degree days
- 103
Cornell in September
Highs average 70°21° and lows 48°9°, with 3.7 in93 mm of precipitation in a typical September.
- Record high
- 95°35° (1976)
- Record low
- 17°−8° (1947)
- Heating degree days
- 219
- Cooling degree days
- 31
Cornell in OctoberThis month
Highs average 56°13° and lows 36°2°, with 3 in77 mm of precipitation in a typical October.
- Record high
- 89°32° (1976)
- Record low
- 11°−12° (1976)
- Heating degree days
- 593
- Cooling degree days
- 2
Cornell in November
Highs average 40°4° and lows 24°−5°, with 1.9 in47 mm of precipitation in a typical November.
- Record high
- 75°24° (1944)
- Record low
- −16°−27° (1976)
- Heating degree days
- 994
- Cooling degree days
- 0
Cornell in December
Highs average 28°−2° and lows 12°−11°, with 1.3 in33 mm of precipitation in a typical December.
- Record high
- 62°17° (2001)
- Record low
- −39° (1983)
- Heating degree days
- 1406
- Cooling degree days
- 0