Beloit, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Beloit, a city in Winnebago County, Wisconsin.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind 0 to 10 mph.
7-day forecast for Beloit
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 10 mph S | 11% |
| Tonight | 65°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 84% |
| Wednesday | 75°F | Patchy Fog | 0 to 5 mph W | 81% |
| Wednesday Night | 60°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NW | 55% |
| Thursday | 79°F | Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 30% |
| Thursday Night | 58°F | Mostly Clear | 0 mph | 10% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 3% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph S | 5% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 24% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 24% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 45% |
| Monday | 84°F | Chance Rain Showers | 5 to 10 mph S | 43% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph NW | 44% |
Forecast source: National Weather Service (api.weather.gov) for Beloit (42.524, -89.018). Updated through the day.
Growing snapshot for Beloit
Last spring frost
May 1
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
5b
More local growing data for Beloit: nearby ZIP 61080 weather · frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Beloit, Wi (2.9 mi from Beloit). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.