Okauchee Lake weather by month
What a typical year looks like in Okauchee Lake, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at OCONOMOWOC WWTP, 6 km from Okauchee Lake; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 36.8 in935 mm
- Snow a year
- 40 in101 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 10
- Heating degree days
- 7,089
- Cooling degree days
- 642
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Okauchee Lake in January
Highs average 28°−2° and lows 11°−12°, with 1.7 in42 mm of precipitation and 11 in28 cm of snow in a typical January.
- Record high
- 59°15° (1997)
- Record low
- −33°−36° (1951)
- Heating degree days
- 1407
- Cooling degree days
- 0
Okauchee Lake in February
Highs average 32°0° and lows 14°−10°, with 1.6 in41 mm of precipitation and 10 in25 cm of snow in a typical February.
- Record high
- 72°22° (2024)
- Record low
- −29°−34° (1996)
- Heating degree days
- 1176
- Cooling degree days
- 0
Okauchee Lake in March
Highs average 44°7° and lows 25°−4°, with 2.1 in53 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 83°28° (2012)
- Record low
- −19°−28° (1962)
- Heating degree days
- 957
- Cooling degree days
- 1
Okauchee Lake in April
Highs average 56°14° and lows 36°2°, with 3.9 in98 mm of precipitation and 2 in5.1 cm of snow in a typical April.
- Record high
- 88°31° (1980)
- Record low
- 4°−16° (1982)
- Heating degree days
- 570
- Cooling degree days
- 3
Okauchee Lake in May
Highs average 69°20° and lows 47°8°, with 4.1 in105 mm of precipitation and 0.2 in0.5 cm of snow in a typical May.
- Record high
- 94°34° (1975)
- Record low
- 23°−5° (1966)
- Heating degree days
- 257
- Cooling degree days
- 37
Okauchee Lake in June
Highs average 78°26° and lows 57°14°, with 4.9 in123 mm of precipitation in a typical June.
- Record high
- 100°38° (1988)
- Record low
- 31°−1° (1945)
- Heating degree days
- 52
- Cooling degree days
- 133
Okauchee Lake in July
Highs average 82°28° and lows 61°16°, with 4.1 in105 mm of precipitation in a typical July.
- Record high
- 103°39° (2012)
- Record low
- 41°5° (1896)
- Heating degree days
- 9
- Cooling degree days
- 218
Okauchee Lake in August
Highs average 81°27° and lows 60°15°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 101°38° (1988)
- Record low
- 39°4° (1893)
- Heating degree days
- 17
- Cooling degree days
- 176
Okauchee Lake in September
Highs average 74°23° and lows 52°11°, with 3.4 in86 mm of precipitation in a typical September.
- Record high
- 98°37° (1953)
- Record low
- 26°−3° (1949)
- Heating degree days
- 136
- Cooling degree days
- 67
Okauchee Lake in OctoberThis month
Highs average 61°16° and lows 40°4°, with 2.8 in72 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 87°31° (1963)
- Record low
- 10°−12° (1895)
- Heating degree days
- 463
- Cooling degree days
- 7
Okauchee Lake in November
Highs average 46°8° and lows 29°−2°, with 2.2 in56 mm of precipitation and 1.4 in3.6 cm of snow in a typical November.
- Record high
- 76°24° (2015)
- Record low
- −14°−26° (1947)
- Heating degree days
- 831
- Cooling degree days
- 0
Okauchee Lake in December
Highs average 34°1° and lows 18°−8°, with 1.9 in47 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 67°19° (2001)
- Record low
- −25°−32° (1983)
- Heating degree days
- 1214
- Cooling degree days
- 0