Le Grand, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Le Grand, a city in Marshall County, Iowa.
Overnight
46°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 46, with temperatures rising to around 48 overnight. West wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
7-day forecast for Le Grand
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Chance Rain Showers | 13 mph W | 26% |
| Wednesday | 52°F | Chance Rain Showers | 15 mph W | 31% |
| Wednesday Night | 42°F | Cloudy then Slight Chance Rain Showers | 12 mph W | 15% |
| Thursday | 54°F | Chance Rain Showers | 12 mph NW | 46% |
| Thursday Night | 36°F | Mostly Cloudy | 6 to 9 mph N | 11% |
| Friday | 49°F | Mostly Sunny | 3 to 7 mph N | 3% |
| Friday Night | 28°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 3 mph W | 0% |
| Saturday Night | 33°F | Mostly Clear | 3 mph W | 1% |
| Sunday | 58°F | Sunny | 6 mph W | 1% |
| Sunday Night | 34°F | Clear | 3 mph SW | 0% |
| Monday | 63°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 38°F | Clear | 6 mph WNW | 0% |
| Tuesday | 63°F | Sunny | 3 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Le Grand (42.007, -92.775). Updated through the day.
Growing snapshot for Le Grand
Last spring frost
Apr 28
First fall frost
Oct 7
Growing season
162 days
Hardiness zone
5a
More local growing data for Le Grand: nearby ZIP 50142 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Albion
Clemons
Ferguson
Gilman
Green Mountain
Haverhill
Laurel
Liscomb
Marshalltown
Melbourne
Rhodes
St. Anthony
State Center
Climate data from the nearest NOAA station, Marshalltown, Ia (8.6 mi from Le Grand). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.