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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
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.