Fitchburg, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fitchburg, a city in Dane County, Wisconsin.
Tonight
55°F
Rain Showers
Rain showers. Cloudy, with a low around 55. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fitchburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain Showers | 10 to 15 mph S | 93% |
| Wednesday | 59°F | Rain Showers Likely | 10 to 15 mph S | 67% |
| Wednesday Night | 46°F | Chance Rain Showers then Chance Light Rain | 15 mph SW | 53% |
| Thursday | 53°F | Light Rain | 10 to 15 mph W | 75% |
| Thursday Night | 39°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 30% |
| Friday | 48°F | Slight Chance Light Rain then Partly Sunny | 5 to 15 mph N | 17% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 2% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 6% |
| Sunday | 58°F | Slight Chance Light Rain | 5 to 10 mph W | 16% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 5% |
| Monday | 59°F | Sunny | 5 to 15 mph SW | 1% |
| Monday Night | 40°F | Mostly Clear | 5 to 10 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 to 10 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fitchburg (42.986, -89.425). Updated through the day.
Growing snapshot for Fitchburg
Last spring frost
May 1
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5b
More local growing data for Fitchburg: nearby ZIP 53711 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Belleville
Black Earth
Blue Mounds
Cambridge
Cottage Grove
Cross Plains
Dane
Deerfield
DeForest
Lake Ripley
Madison
Maple Bluff
Marshall
Mazomanie
McFarland
Middleton
Monona
Mount Horeb
Oregon
Rockdale
Shorewood Hills
Stoughton
Sun Prairie
Verona
Waunakee
Windsor
Climate data from the nearest NOAA station, Uw Arboretum - Madison, Wi (2.3 mi from Fitchburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.