Leon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leon, a city in Decatur County, Iowa.
Overnight
70°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 70. South wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Leon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Chance Showers And Thunderstorms | 8 mph S | 27% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 9 mph SW | 33% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph N | 72% |
| Sunday | 70°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 to 12 mph NNE | 61% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 10 mph NE | 61% |
| Monday | 62°F | Rain Showers Likely | 10 mph NE | 56% |
| Monday Night | 53°F | Chance Rain Showers | 9 mph NE | 51% |
| Tuesday | 60°F | Mostly Cloudy | 9 mph NE | 11% |
| Tuesday Night | 48°F | Mostly Cloudy | 3 to 7 mph NE | 3% |
| Wednesday | 63°F | Mostly Sunny | 5 mph ENE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph E | 4% |
| Thursday | 65°F | Partly Sunny | 5 mph ESE | 13% |
| Thursday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph E | 16% |
| Friday | 67°F | Slight Chance Rain Showers | 5 mph E | 16% |
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 Sep 19, 2026.