Union Grove, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union Grove, a village in Racine County, Wisconsin.
This Afternoon
70°F
Light Rain Likely
Rain likely and a slight chance of thunderstorms. Cloudy. High near 70, with temperatures falling to around 64 in the afternoon. South wind around 15 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Union Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Light Rain Likely | 15 mph S | 67% |
| Tonight | 59°F | Light Rain | 10 to 15 mph S | 85% |
| Wednesday | 64°F | Light Rain Likely | 10 to 15 mph S | 67% |
| Wednesday Night | 46°F | Mostly Cloudy then Chance Light Rain | 10 to 15 mph SW | 25% |
| Thursday | 56°F | Light Rain Likely | 10 to 15 mph SW | 56% |
| Thursday Night | 40°F | Light Rain Likely | 5 to 10 mph NW | 59% |
| Friday | 50°F | Chance Light Rain | 10 to 15 mph N | 25% |
| Friday Night | 33°F | Mostly Cloudy | 5 to 10 mph NW | 8% |
| Saturday | 52°F | Mostly Sunny | 5 mph W | 5% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Sunday Night | 34°F | Partly Cloudy | 5 to 10 mph W | 7% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph W | 2% |
| Monday Night | 39°F | Partly Cloudy | 10 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Union Grove (42.686, -88.050). Updated through the day.
Growing snapshot for Union Grove
Last spring frost
May 5
First fall frost
Oct 8
Growing season
156 days
Hardiness zone
5b
More local growing data for Union Grove: nearby ZIP 53182 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Bohners Lake
Browns Lake
Burlington
Caledonia
Eagle Lake
Elmwood Park
Mount Pleasant
North Bay
Racine
Raymond
Rochester
Sturtevant
Tichigan
Waterford
Wind Point
Yorkville
Climate data from the nearest NOAA station, Union Grove, Wi (0.6 mi from Union Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.