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 | 54% |
| Tonight | 58°F | Showers And Thunderstorms Likely | 5 to 12 mph NE | 63% |
| Sunday | 68°F | Chance Rain Showers then Mostly Cloudy | 15 mph NE | 28% |
| Sunday Night | 52°F | Mostly Cloudy | 14 mph NE | 11% |
| Monday | 62°F | Chance Rain Showers | 14 mph NE | 45% |
| Monday Night | 48°F | Chance Rain Showers | 8 to 12 mph NE | 45% |
| Tuesday | 61°F | Slight Chance Rain Showers then Partly Sunny | 8 to 12 mph NE | 20% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 8 mph NE | 4% |
| Wednesday | 64°F | Mostly Sunny | 6 to 9 mph NE | 2% |
| Wednesday Night | 50°F | Partly Cloudy | 2 to 6 mph NE | 0% |
| Thursday | 67°F | Partly Sunny | 5 mph E | 9% |
| Thursday Night | 53°F | Mostly Cloudy | 3 mph E | 9% |
| Friday | 70°F | Partly Sunny | 5 mph NE | 3% |
| Friday Night | 54°F | Partly Cloudy | 3 mph E | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fennimore, WI
Last spring frost
May 3
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
5a
Explore more for Fennimore, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Boscobel Ap, Wi (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.