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
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 70. East wind around 10 mph. Chance of precipitation is 30%. 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 | Chance Rain Showers | 10 mph E | 26% |
| Tonight | 60°F | Chance Rain Showers then Chance Showers And Thunderstorms | 10 to 15 mph E | 91% |
| Saturday | 73°F | Showers And Thunderstorms | 10 to 15 mph SE | 93% |
| Saturday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph NE | 76% |
| Sunday | 67°F | Rain Showers Likely | 10 to 20 mph NE | 55% |
| Sunday Night | 54°F | Chance Rain Showers | 15 mph NE | 31% |
| Monday | 63°F | Slight Chance Rain Showers | 15 mph E | 22% |
| Monday Night | 50°F | Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Tuesday | 61°F | Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 15% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 11% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph N | 6% |
| Thursday | 65°F | Partly Sunny | 5 to 10 mph N | 4% |
| Thursday Night | 51°F | Mostly Cloudy | 0 to 5 mph N | 4% |
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 Sep 19, 2026.