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Westby, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Westby, a city in Vernon County, Wisconsin.

Today
65°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 65, with temperatures falling to around 63 in the afternoon. East wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Westby

WhenTempForecastWindPrecip
Today 65°F Showers And Thunderstorms 7 mph E 85%
Tonight 54°F Showers And Thunderstorms Likely 9 mph NE 59%
Sunday 66°F Mostly Cloudy 9 to 13 mph NE 14%
Sunday Night 48°F Mostly Cloudy 10 mph NE 4%
Monday 63°F Mostly Cloudy 8 to 12 mph NE 13%
Monday Night 44°F Mostly Cloudy 5 to 9 mph NE 13%
Tuesday 62°F Mostly Sunny 5 to 9 mph E 6%
Tuesday Night 42°F Mostly Clear 2 to 6 mph NE 2%
Wednesday 66°F Sunny 6 mph E 2%
Wednesday Night 45°F Mostly Clear 1 to 5 mph E 2%
Thursday 68°F Mostly Sunny 3 mph E 4%
Thursday Night 48°F Partly Cloudy 2 mph E 3%
Friday 71°F Mostly Sunny 1 to 5 mph E 2%
Friday Night 49°F Partly Cloudy 3 mph SE 2%

Forecast source: National Weather Service (api.weather.gov) for Westby (43.653, -90.858). Updated through the day.

Growing snapshot for Westby

Last spring frost
Apr 27
First fall frost
Oct 14
Growing season
170 days
Hardiness zone
5a

More local growing data for Westby: nearby ZIP 54667 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Cashton, Wi (6.9 mi from Westby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.