Westby, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westby, a city in Vernon County, Wisconsin.
Overnight
63°F
Mostly Cloudy
Mostly cloudy, with a low around 63. South wind around 8 mph.
7-day forecast for Westby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Cloudy | 8 mph S | 0% |
| Tuesday | 79°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 40% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 2 to 6 mph NW | 48% |
| Wednesday | 77°F | Partly Sunny | 5 mph NW | 8% |
| Wednesday Night | 54°F | Partly Cloudy | 3 mph NW | 1% |
| Thursday | 81°F | Sunny | 3 mph SW | 1% |
| Thursday Night | 58°F | Mostly Clear | 3 mph S | 0% |
| Friday | 84°F | Sunny | 3 to 9 mph SW | 5% |
| Friday Night | 62°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph S | 16% |
| Saturday | 85°F | Mostly Sunny | 5 to 8 mph SW | 13% |
| Saturday Night | 66°F | Partly Cloudy then Chance Rain Showers | 7 mph SW | 34% |
| Sunday | 86°F | Chance Rain Showers | 6 to 10 mph W | 34% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 2 to 7 mph S | 43% |
| Monday | 84°F | Chance Rain Showers | 6 mph S | 43% |
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 Aug 4, 2026.