Fennimore, WI Weather & Growing Conditions
Today
81°F
Mostly Cloudy then Scattered Showers And Thunderstorms
Isolated rain showers between 3pm and 4pm, then scattered showers and thunderstorms. Mostly cloudy. High near 81, with temperatures falling to around 76 in the afternoon. West wind 7 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Mostly Cloudy then Scattered Showers And Thunderstorms | 7 to 10 mph W | 32% |
| Tonight | 62°F | Scattered Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 7 mph NW | 66% |
| Wednesday | 75°F | Chance Showers And Thunderstorms | 1 to 5 mph N | 32% |
| Wednesday Night | 56°F | Slight Chance Rain Showers | 0 to 3 mph W | 15% |
| Thursday | 79°F | Sunny | 0 to 3 mph E | 9% |
| Thursday Night | 59°F | Mostly Clear | 1 mph S | 0% |
| Friday | 82°F | Sunny | 0 to 8 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 3 to 7 mph S | 8% |
| Saturday | 83°F | Mostly Sunny | 5 to 9 mph SW | 9% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 8 mph S | 31% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 31% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 3 to 9 mph S | 44% |
| Monday | 83°F | Chance Rain Showers | 5 to 9 mph S | 44% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 5 to 8 mph N | 39% |
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 Aug 4, 2026.