Westby, WI Weather & Growing Conditions
Today
79°F
Isolated Rain Showers then Isolated Showers And Thunderstorms
Isolated rain showers before 10am, then isolated showers and thunderstorms. Mostly cloudy. High near 79, with temperatures falling to around 75 in the afternoon. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Isolated Rain Showers then Isolated Showers And Thunderstorms | 6 to 9 mph W | 23% |
| Tonight | 59°F | Scattered Showers And Thunderstorms | 5 mph NW | 43% |
| Wednesday | 77°F | Partly Sunny | 5 mph NW | 8% |
| Wednesday Night | 54°F | Partly Cloudy | 1 to 5 mph W | 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 9 mph W | 34% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 2 to 7 mph S | 42% |
| Monday | 84°F | Chance Rain Showers | 6 mph S | 42% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 6 mph NE | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Westby, WI
Last spring frost
Apr 27
First fall frost
Oct 14
Growing season
170 days
Hardiness zone
5a
Explore more for Westby, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Cashton, Wi (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.