Westby weather by month
What a typical year looks like in Westby, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Viroqua, 11 km from Westby; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 38 in965 mm
- Snow a year
- 47 in120 cm
- Last spring freeze
- Apr 30
- First fall freeze
- Oct 4
- Heating degree days
- 8,133
- Cooling degree days
- 397
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −15°−26° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Westby in January
Highs average 23°−5° and lows 6°−14°, with 1.2 in29 mm of precipitation and 11 in29 cm of snow in a typical January.
- Record high
- 55°13° (1897)
- Record low
- −42°−41° (1963)
- Heating degree days
- 1565
- Cooling degree days
- 0
Westby in February
Highs average 28°−2° and lows 10°−12°, with 1.1 in29 mm of precipitation and 10 in26 cm of snow in a typical February.
- Record high
- 66°19° (2024)
- Record low
- −37°−38° (1996)
- Heating degree days
- 1301
- Cooling degree days
- 0
Westby in March
Highs average 40°5° and lows 21°−6°, with 2 in51 mm of precipitation and 7 in18 cm of snow in a typical March.
- Record high
- 83°28° (1986)
- Record low
- −35°−37° (1962)
- Heating degree days
- 1059
- Cooling degree days
- 0
Westby in April
Highs average 54°12° and lows 33°1°, with 4 in101 mm of precipitation and 4 in10 cm of snow in a typical April.
- Record high
- 90°32° (1952)
- Record low
- −8°−22° (1982)
- Heating degree days
- 640
- Cooling degree days
- 1
Westby in May
Highs average 66°19° and lows 45°7°, with 4.7 in120 mm of precipitation in a typical May.
- Record high
- 106°41° (1934)
- Record low
- 22°−6° (2004)
- Heating degree days
- 316
- Cooling degree days
- 18
Westby in June
Highs average 75°24° and lows 55°13°, with 5.7 in145 mm of precipitation in a typical June.
- Record high
- 101°38° (1931)
- Record low
- 30°−1° (1897)
- Heating degree days
- 74
- Cooling degree days
- 83
Westby in July
Highs average 79°26° and lows 59°15°, with 4.6 in116 mm of precipitation in a typical July.
- Record high
- 108°42° (1936)
- Record low
- 36°2° (1984)
- Heating degree days
- 23
- Cooling degree days
- 149
Westby in August
Highs average 77°25° and lows 57°14°, with 4.6 in116 mm of precipitation in a typical August.
- Record high
- 103°39° (1937)
- Record low
- 32°0° (1986)
- Heating degree days
- 39
- Cooling degree days
- 109
Westby in September
Highs average 70°21° and lows 48°9°, with 3.9 in100 mm of precipitation in a typical September.
- Record high
- 99°37° (1939)
- Record low
- 20°−7° (1995)
- Heating degree days
- 206
- Cooling degree days
- 34
Westby in OctoberThis month
Highs average 57°14° and lows 36°2°, with 2.7 in67 mm of precipitation and 0.4 in1 cm of snow in a typical October.
- Record high
- 90°32° (1963)
- Record low
- 1°−17° (1925)
- Heating degree days
- 572
- Cooling degree days
- 3
Westby in November
Highs average 41°5° and lows 24°−4°, with 2 in50 mm of precipitation and 4 in10 cm of snow in a typical November.
- Record high
- 78°26° (1950)
- Record low
- −17°−27° (1977)
- Heating degree days
- 966
- Cooling degree days
- 0
Westby in December
Highs average 28°−2° and lows 13°−10°, with 1.6 in40 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 64°18° (2021)
- Record low
- −36°−38° (1983)
- Heating degree days
- 1372
- Cooling degree days
- 0