Fennimore, WI Weather & Growing Conditions
This Afternoon
71°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy. High near 71, with temperatures falling to around 68 in the afternoon. Southeast wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Chance Showers And Thunderstorms | 6 mph SE | 52% |
| Tonight | 58°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 64% |
| Sunday | 68°F | Chance Rain Showers then Cloudy | 14 mph NE | 31% |
| Sunday Night | 52°F | Mostly Cloudy | 12 to 15 mph NE | 12% |
| Monday | 63°F | Chance Rain Showers | 14 mph NE | 48% |
| Monday Night | 48°F | Chance Rain Showers | 7 to 13 mph NE | 48% |
| Tuesday | 61°F | Slight Chance Rain Showers then Partly Sunny | 7 to 12 mph NE | 22% |
| Tuesday Night | 46°F | Partly Cloudy | 3 to 9 mph NE | 5% |
| Wednesday | 65°F | Mostly Sunny | 5 to 9 mph NE | 3% |
| Wednesday Night | 49°F | Partly Cloudy | 1 to 6 mph NE | 0% |
| Thursday | 68°F | Partly Sunny | 5 mph E | 9% |
| Thursday Night | 53°F | Mostly Cloudy | 2 mph NE | 9% |
| Friday | 71°F | Partly Sunny | 1 to 5 mph NE | 4% |
| Friday Night | 53°F | Partly Cloudy | 2 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fennimore, WI
Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
166 days
Hardiness zone
5a
Explore more for Fennimore, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Lancaster 4 Wsw, Wi (11.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.