Westby, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westby, a city in Vernon County, Wisconsin.
Tonight
53°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 53, with temperatures rising to around 56 overnight. Southeast wind around 12 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Westby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Chance Rain Showers | 12 mph SE | 51% |
| Wednesday | 57°F | Rain Showers | 9 to 14 mph S | 84% |
| Wednesday Night | 44°F | Rain Showers | 14 mph SW | 82% |
| Thursday | 50°F | Rain Showers | 13 mph NW | 75% |
| Thursday Night | 36°F | Mostly Cloudy | 8 to 12 mph N | 14% |
| Friday | 49°F | Partly Sunny | 3 to 9 mph N | 2% |
| Friday Night | 29°F | Partly Cloudy | 2 mph NW | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 8% |
| Sunday | 58°F | Slight Chance Rain Showers | 5 to 9 mph NW | 16% |
| Sunday Night | 34°F | Mostly Clear | 5 mph SW | 5% |
| Monday | 61°F | Mostly Sunny | 5 to 13 mph SW | 1% |
| Monday Night | 38°F | Mostly Clear | 7 mph W | 1% |
| Tuesday | 59°F | Sunny | 7 mph W | 1% |
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 Nov 4, 2026.