Deerfield, WI Weather & Growing Conditions
This Afternoon
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then showers and thunderstorms likely between 2pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers and thunderstorms likely. Cloudy, with a high near 67. East wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 66% |
| Tonight | 59°F | Showers And Thunderstorms | 5 to 10 mph NE | 80% |
| Sunday | 65°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 25% |
| Sunday Night | 53°F | Mostly Cloudy | 10 to 15 mph NE | 13% |
| Monday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Monday Night | 48°F | Chance Rain Showers | 10 mph NE | 33% |
| Tuesday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 3% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Friday Night | 49°F | Partly Cloudy | 0 to 5 mph E | 2% |
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 Sep 19, 2026.