Lake Mills, IA Weather & Growing Conditions
Today
49°F
Rain Showers Likely
Rain showers likely. Cloudy. High near 49, with temperatures falling to around 47 in the afternoon. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 49°F | Rain Showers Likely | 15 mph W | 57% |
| Tonight | 42°F | Rain Showers Likely | 12 to 15 mph WNW | 66% |
| Thursday | 48°F | Chance Rain Showers then Cloudy | 12 to 15 mph NNW | 36% |
| Thursday Night | 32°F | Mostly Cloudy | 3 to 10 mph N | 7% |
| Friday | 45°F | Mostly Sunny | 2 to 6 mph NNE | 2% |
| Friday Night | 26°F | Partly Cloudy | 1 mph N | 0% |
| Saturday | 48°F | Mostly Sunny | 1 to 6 mph SW | 2% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 2% |
| Sunday | 54°F | Sunny | 7 mph W | 1% |
| Sunday Night | 34°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 6 to 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 2 to 6 mph WNW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph NW | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 3 mph WSW | 1% |
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.