Leon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leon, a city in Decatur County, Iowa.
Tonight
46°F
Chance Rain Showers then Cloudy
A chance of rain showers before 9pm. Cloudy. Low around 46, with temperatures rising to around 48 overnight. West wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Leon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Chance Rain Showers then Cloudy | 9 to 13 mph W | 46% |
| Wednesday | 53°F | Mostly Cloudy | 12 to 16 mph W | 10% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph W | 4% |
| Thursday | 53°F | Mostly Cloudy then Chance Rain Showers | 10 mph WNW | 30% |
| Thursday Night | 41°F | Mostly Cloudy | 8 mph NNW | 10% |
| Friday | 52°F | Partly Sunny | 5 to 8 mph N | 6% |
| Friday Night | 35°F | Mostly Cloudy | 3 mph NNW | 1% |
| Saturday | 56°F | Partly Sunny | 1 to 5 mph WSW | 3% |
| Saturday Night | 37°F | Mostly Clear | 5 mph W | 5% |
| Sunday | 61°F | Sunny | 7 mph W | 3% |
| Sunday Night | 39°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 65°F | Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 65°F | Mostly Sunny | 7 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Leon (40.741, -93.756). Updated through the day.
Growing snapshot for Leon
Last spring frost
Apr 30
First fall frost
Oct 8
Growing season
161 days
Hardiness zone
5b
More local growing data for Leon: nearby ZIP 50144 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Leon 6 Ese, Ia (4.9 mi from Leon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.