Deerfield, WI Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 10 mph SW | 12% |
| Tonight | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 86% |
| Wednesday | 75°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 69% |
| Wednesday Night | 56°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph NW | 18% |
| Thursday | 79°F | Mostly Sunny | 0 to 5 mph SE | 6% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 6% |
| Friday | 81°F | Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 63°F | Mostly Clear | 5 mph SW | 4% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph SW | 31% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 10 mph SW | 31% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 48% |
| Monday | 83°F | Chance Rain Showers | 5 mph SW | 48% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 mph NW | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Deerfield, WI
Last spring frost
Apr 29
First fall frost
Oct 14
Growing season
167 days
Hardiness zone
5b
Explore more for Deerfield, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Lake Mills Wwtp, Wi (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.