Fennimore, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fennimore, a city in Grant County, Wisconsin.
Today
80°F
Mostly Cloudy then Isolated Showers And Thunderstorms
Isolated rain showers between 2pm and 4pm, then isolated showers and thunderstorms between 4pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 75 in the afternoon. Southwest wind 7 to 12 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fennimore
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Mostly Cloudy then Isolated Showers And Thunderstorms | 7 to 12 mph SW | 31% |
| Tonight | 62°F | Scattered Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph NW | 61% |
| Wednesday | 75°F | Scattered Showers And Thunderstorms then Partly Sunny | 5 mph NW | 29% |
| Wednesday Night | 55°F | Partly Cloudy | 3 mph NW | 13% |
| Thursday | 79°F | Sunny | 3 mph E | 6% |
| Thursday Night | 59°F | Mostly Clear | 2 mph S | 0% |
| Friday | 81°F | Sunny | 2 to 8 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 7 mph S | 8% |
| Saturday | 82°F | Mostly Sunny | 6 to 9 mph SW | 9% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 9 mph S | 32% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 9 to 13 mph SW | 32% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 5 to 9 mph S | 45% |
| Monday | 82°F | Chance Rain Showers | 6 to 9 mph S | 45% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 8 mph N | 38% |
Forecast source: National Weather Service (api.weather.gov) for Fennimore (42.979, -90.649). Updated through the day.
Growing snapshot for Fennimore
Last spring frost
May 3
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
5a
More local growing data for Fennimore: nearby ZIP 53809 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Bagley
Bloomington
Boscobel
Cuba City
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Kieler
Lancaster
Livingston
Montfort
Mount Hope
Muscoda
Patch Grove
Platteville
Potosi
Sandy Hook
Tennyson
Woodman
Climate data from the nearest NOAA station, Boscobel Ap, Wi (11.4 mi from Fennimore). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.