Harman US

Belgium, WI Weather & Growing Conditions

Tonight
57°F
Rain Showers
Rain showers before 1am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 57. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 57°F Rain Showers 10 to 15 mph E 98%
Saturday 69°F Showers And Thunderstorms 10 to 15 mph E 95%
Saturday Night 57°F Showers And Thunderstorms Likely 10 mph NE 71%
Sunday 68°F Chance Rain Showers 15 to 25 mph NE 32%
Sunday Night 52°F Mostly Cloudy 10 to 20 mph NE 7%
Monday 64°F Mostly Cloudy 15 to 20 mph NE 12%
Monday Night 50°F Mostly Cloudy 10 to 15 mph NE 13%
Tuesday 64°F Partly Sunny 10 to 20 mph NE 13%
Tuesday Night 50°F Mostly Cloudy 5 to 15 mph NE 12%
Wednesday 65°F Mostly Sunny 5 to 10 mph NE 12%
Wednesday Night 50°F Partly Cloudy 5 to 10 mph NE 6%
Thursday 68°F Partly Sunny 5 mph NE 3%
Thursday Night 51°F Partly Cloudy 0 to 5 mph N 4%
Friday 70°F Mostly Sunny 5 mph NE 3%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Belgium, WI

Last spring frost
May 5
First fall frost
Oct 12
Growing season
159 days
Hardiness zone
5b

Explore more for Belgium, WI: full frost dates · planting calendar · Wisconsin frost dates

Climate data from the nearest NOAA station, Belgium Wwtp, Wi (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.