Fennimore, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fennimore, a city in Grant County, Wisconsin.
Tonight
52°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 52, with temperatures rising to around 56 overnight. South wind around 12 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fennimore
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Rain Showers Likely | 12 mph S | 73% |
| Wednesday | 56°F | Rain Showers Likely | 12 to 16 mph SW | 62% |
| Wednesday Night | 45°F | Rain Showers Likely | 12 to 16 mph SW | 65% |
| Thursday | 52°F | Rain Showers | 12 mph W | 79% |
| Thursday Night | 39°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph N | 20% |
| Friday | 48°F | Partly Sunny | 5 to 10 mph N | 5% |
| Friday Night | 31°F | Partly Cloudy | 2 mph NW | 1% |
| Saturday | 51°F | Mostly Sunny | 1 to 6 mph W | 1% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 4% |
| Sunday | 57°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 9 mph W | 15% |
| Sunday Night | 35°F | Mostly Clear | 6 mph SW | 4% |
| Monday | 60°F | Mostly Sunny | 6 to 13 mph SW | 1% |
| Monday Night | 39°F | Mostly Clear | 5 to 8 mph W | 0% |
| Tuesday | 59°F | Sunny | 5 to 8 mph W | 1% |
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
Dickeyville
Glen Haven
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 Nov 4, 2026.