Cornucopia weather by month
What a typical year looks like in Cornucopia, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Bayfield Fish Hatchery, 20 km from Cornucopia; records cover 2008–2026.
The year at a glance
- Precipitation a year
- 32.6 in829 mm
- Snow a year
- Rare
- Last spring freeze
- May 21
- First fall freeze
- Oct 3
- Heating degree days
- 8,907
- Cooling degree days
- 209
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −18°−28° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Cornucopia in January
Highs average 23°−5° and lows 4°−16°, with 1.5 in39 mm of precipitation in a typical January.
- Record high
- 54°12° (2012)
- Record low
- −27°−33° (2019)
- Heating degree days
- 1610
- Cooling degree days
- 0
Cornucopia in February
Highs average 26°−3° and lows 6°−14°, with 1.3 in32 mm of precipitation in a typical February.
- Record high
- 57°14° (2017)
- Record low
- −29°−34° (2021)
- Heating degree days
- 1372
- Cooling degree days
- 0
Cornucopia in March
Highs average 37°3° and lows 17°−8°, with 1.6 in41 mm of precipitation in a typical March.
- Record high
- 81°27° (2012)
- Record low
- −21°−29° (2009)
- Heating degree days
- 1189
- Cooling degree days
- 0
Cornucopia in April
Highs average 49°9° and lows 29°−2°, with 2.7 in68 mm of precipitation in a typical April.
- Record high
- 78°26° (2015)
- Record low
- 1°−17° (2016)
- Heating degree days
- 785
- Cooling degree days
- 0
Cornucopia in May
Highs average 60°16° and lows 40°4°, with 3.5 in89 mm of precipitation in a typical May.
- Record high
- 94°34° (2016)
- Record low
- 23°−5° (2011)
- Heating degree days
- 475
- Cooling degree days
- 2
Cornucopia in June
Highs average 71°22° and lows 50°10°, with 3.9 in99 mm of precipitation in a typical June.
- Record high
- 98°37° (2022)
- Record low
- 30°−1° (2015)
- Heating degree days
- 156
- Cooling degree days
- 25
Cornucopia in July
Highs average 77°25° and lows 56°13°, with 3.9 in98 mm of precipitation in a typical July.
- Record high
- 99°37° (2026)
- Record low
- 40°4° (2013)
- Heating degree days
- 44
- Cooling degree days
- 96
Cornucopia in August
Highs average 76°24° and lows 55°13°, with 3.6 in91 mm of precipitation in a typical August.
- Record high
- 96°36° (2013)
- Record low
- 39°4° (2009)
- Heating degree days
- 56
- Cooling degree days
- 69
Cornucopia in September
Highs average 68°20° and lows 48°9°, with 3.4 in87 mm of precipitation in a typical September.
- Record high
- 89°32° (2011)
- Record low
- 29°−2° (2011)
- Heating degree days
- 229
- Cooling degree days
- 17
Cornucopia in OctoberThis month
Highs average 55°13° and lows 36°2°, with 3.2 in82 mm of precipitation in a typical October.
- Record high
- 88°31° (2025)
- Record low
- 16°−9° (2020)
- Heating degree days
- 618
- Cooling degree days
- 0
Cornucopia in November
Highs average 40°4° and lows 25°−4°, with 2.1 in53 mm of precipitation in a typical November.
- Record high
- 79°26° (2020)
- Record low
- −4°−20° (2014)
- Heating degree days
- 983
- Cooling degree days
- 0
Cornucopia in December
Highs average 28°−2° and lows 12°−11°, with 2 in50 mm of precipitation in a typical December.
- Record high
- 55°13° (2023)
- Record low
- −22°−30° (2008)
- Heating degree days
- 1390
- Cooling degree days
- 0