Lake Mills, IA Weather & Growing Conditions
This Afternoon
46°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 46, with temperatures falling to around 44 in the afternoon. West wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 46°F | Chance Rain Showers | 14 mph W | 48% |
| Tonight | 40°F | Rain Showers Likely | 12 to 15 mph WNW | 68% |
| Thursday | 47°F | Chance Rain Showers then Cloudy | 12 to 16 mph NNW | 27% |
| Thursday Night | 30°F | Mostly Cloudy | 3 to 10 mph N | 1% |
| Friday | 44°F | Mostly Sunny | 5 mph NNE | 0% |
| Friday Night | 25°F | Partly Cloudy | 1 mph WNW | 0% |
| Saturday | 49°F | Mostly Sunny | 1 to 7 mph SW | 1% |
| Saturday Night | 31°F | Mostly Clear | 6 mph WSW | 0% |
| Sunday | 56°F | Sunny | 2 to 6 mph W | 0% |
| Sunday Night | 34°F | Clear | 2 to 6 mph SW | 0% |
| Monday | 62°F | Sunny | 7 to 10 mph SW | 0% |
| Monday Night | 36°F | Mostly Clear | 2 to 6 mph WNW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph NNW | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 3 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lake Mills, IA
Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
159 days
Hardiness zone
5a
Explore more for Lake Mills, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Forest City 2 Nne, Ia (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.