Cottage Grove, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cottage Grove, a village in Dane County, Wisconsin.
Overnight
61°F
Mostly Clear
Mostly clear, with a low around 61. South wind around 5 mph.
7-day forecast for Cottage Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 32% |
| Tuesday Night | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph W | 86% |
| Wednesday | 75°F | Patchy Fog | 5 mph W | 49% |
| Wednesday Night | 58°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 25% |
| Thursday | 79°F | Mostly Sunny | 0 mph | 14% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 5% |
| Friday | 81°F | Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 63°F | Mostly Clear | 5 mph SW | 4% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SW | 30% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 10 mph SW | 30% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 49% |
| Monday | 83°F | Chance Rain Showers | 5 mph SW | 49% |
Forecast source: National Weather Service (api.weather.gov) for Cottage Grove (43.092, -89.205). Updated through the day.
Growing snapshot for Cottage Grove
Last spring frost
Apr 30
First fall frost
Oct 11
Growing season
163 days
Hardiness zone
5b
More local growing data for Cottage Grove: nearby ZIP 53527 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Belleville
Black Earth
Blue Mounds
Cambridge
Cross Plains
Dane
Deerfield
DeForest
Fitchburg
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, Stoughton, Wi (9.8 mi from Cottage Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.