Brookfield, WI Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 10 mph SW | 5% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 85% |
| Wednesday | 75°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NW | 74% |
| Wednesday Night | 61°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 46% |
| Thursday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 22% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph S | 9% |
| Friday | 83°F | Sunny | 0 to 5 mph SW | 1% |
| Friday Night | 63°F | Mostly Clear | 5 mph SW | 6% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 15% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 28% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 52% |
| Monday | 83°F | Chance Rain Showers | 5 to 10 mph SW | 44% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 mph E | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brookfield, WI
Last spring frost
Apr 26
First fall frost
Oct 18
Growing season
173 days
Hardiness zone
5b
Explore more for Brookfield, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Mt Mary College, Wi (3.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.