Polonia, WI Weather & Growing Conditions
Today
79°F
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 79, with temperatures falling to around 77 in the afternoon. Heat index values as high as 78. West southwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 13 mph WSW | 22% |
| Tonight | 57°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph NW | 22% |
| Wednesday | 78°F | Mostly Sunny | 2 to 6 mph SSE | 3% |
| Wednesday Night | 54°F | Partly Cloudy then Patchy Fog | 1 to 6 mph NW | 2% |
| Thursday | 82°F | Sunny | 1 to 6 mph WSW | 1% |
| Thursday Night | 59°F | Mostly Clear | 6 mph SSW | 0% |
| Friday | 86°F | Sunny | 3 to 12 mph SW | 3% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 19% |
| Saturday | 86°F | Mostly Sunny | 6 to 12 mph SW | 13% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 3 to 10 mph WSW | 39% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 39% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 2 to 9 mph NW | 40% |
| Monday | 82°F | Chance Showers And Thunderstorms | 3 to 9 mph SSE | 31% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 3 to 9 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Polonia, WI
Last spring frost
May 4
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
4b
Explore more for Polonia, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Stevens Pt, Wi (9.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.