Hebron weather by month
What a typical year looks like in Hebron, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lake Mills Wwtp, 25 km from Hebron; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 37 in939 mm
- Snow a year
- 42 in107 cm
- Last spring freeze
- Apr 26
- First fall freeze
- Oct 12
- Heating degree days
- 7,097
- Cooling degree days
- 725
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Hebron in January
Highs average 27°−3° and lows 11°−11°, with 1.4 in36 mm of precipitation and 11 in27 cm of snow in a typical January.
- Record high
- 60°16° (1944)
- Record low
- −33°−36° (1951)
- Heating degree days
- 1423
- Cooling degree days
- 0
Hebron in February
Highs average 31°0° and lows 14°−10°, with 1.5 in39 mm of precipitation and 11 in29 cm of snow in a typical February.
- Record high
- 71°22° (2017)
- Record low
- −32°−36° (1929)
- Heating degree days
- 1187
- Cooling degree days
- 0
Hebron in March
Highs average 43°6° and lows 25°−4°, with 2 in52 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 84°29° (2012)
- Record low
- −18°−28° (1962)
- Heating degree days
- 965
- Cooling degree days
- 1
Hebron in April
Highs average 57°14° and lows 36°2°, with 3.6 in91 mm of precipitation and 2.1 in5.3 cm of snow in a typical April.
- Record high
- 89°32° (1930)
- Record low
- 8°−13° (1982)
- Heating degree days
- 559
- Cooling degree days
- 3
Hebron in May
Highs average 70°21° and lows 48°9°, with 4.4 in112 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 103°39° (1934)
- Record low
- 20°−7° (1934)
- Heating degree days
- 241
- Cooling degree days
- 42
Hebron in June
Highs average 80°27° and lows 58°15°, with 5.1 in130 mm of precipitation in a typical June.
- Record high
- 104°40° (1934)
- Record low
- 29°−2° (1929)
- Heating degree days
- 37
- Cooling degree days
- 160
Hebron in July
Highs average 84°29° and lows 62°17°, with 4.4 in111 mm of precipitation in a typical July.
- Record high
- 110°43° (1936)
- Record low
- 40°4° (1918)
- Heating degree days
- 4
- Cooling degree days
- 251
Hebron in August
Highs average 81°27° and lows 61°16°, with 4.5 in114 mm of precipitation in a typical August.
- Record high
- 104°40° (1988)
- Record low
- 34°1° (1915)
- Heating degree days
- 13
- Cooling degree days
- 193
Hebron in September
Highs average 74°23° and lows 52°11°, with 3.5 in88 mm of precipitation in a typical September.
- Record high
- 100°38° (1939)
- Record low
- 24°−4° (1899)
- Heating degree days
- 132
- Cooling degree days
- 68
Hebron in OctoberThis month
Highs average 61°16° and lows 40°5°, with 2.8 in72 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 90°32° (1897)
- Record low
- −3°−19° (1925)
- Heating degree days
- 457
- Cooling degree days
- 7
Hebron in November
Highs average 45°7° and lows 29°−2°, with 2.1 in54 mm of precipitation and 2 in5.1 cm of snow in a typical November.
- Record high
- 77°25° (1915)
- Record low
- −13°−25° (1976)
- Heating degree days
- 844
- Cooling degree days
- 0
Hebron in December
Highs average 32°0° and lows 18°−8°, with 1.7 in42 mm of precipitation and 11 in28 cm of snow in a typical December.
- Record high
- 66°19° (1998)
- Record low
- −24°−31° (1924)
- Heating degree days
- 1235
- Cooling degree days
- 0