Lake Mills, WI Weather & Growing Conditions
Overnight
57°F
Chance Light Rain
A chance of rain. Cloudy, with a low around 57. South wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Chance Light Rain | 10 mph S | 33% |
| Wednesday | 60°F | Slight Chance Light Rain | 10 to 15 mph S | 22% |
| Wednesday Night | 46°F | Chance Light Rain | 15 mph SW | 41% |
| Thursday | 54°F | Light Rain Likely | 10 to 15 mph W | 63% |
| Thursday Night | 37°F | Slight Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 24% |
| Friday | 47°F | Partly Sunny | 5 to 15 mph N | 4% |
| Friday Night | 29°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 59°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph W | 1% |
| Tuesday | 60°F | Sunny | 5 to 10 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lake Mills, WI
Last spring frost
Apr 29
First fall frost
Oct 14
Growing season
167 days
Hardiness zone
5b
Explore more for Lake Mills, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Lake Mills Wwtp, Wi (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.