St. Francis, WI Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind 5 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 15 mph S | 3% |
| Tonight | 67°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 15 mph SW | 79% |
| Wednesday | 75°F | Showers And Thunderstorms | 5 mph N | 79% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms | 5 mph NW | 50% |
| Thursday | 78°F | Chance Rain Showers then Partly Sunny | 5 mph NE | 28% |
| Thursday Night | 64°F | Partly Cloudy | 0 to 5 mph S | 9% |
| Friday | 83°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Friday Night | 66°F | Mostly Clear | 5 to 10 mph S | 6% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 15% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 10 mph SW | 26% |
| Sunday | 81°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 26% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph SW | 51% |
| Monday | 79°F | Chance Rain Showers | 10 mph S | 45% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 43% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Francis, WI
Last spring frost
Apr 19
First fall frost
Oct 29
Growing season
192 days
Hardiness zone
6a
Explore more for St. Francis, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Milwaukee Mitchell Ap, Wi (2.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.