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
64°F
Partly Cloudy
Partly cloudy, with a low around 64. South wind around 6 mph.
7-day forecast for Le Grand
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Partly Cloudy | 6 mph S | 1% |
| Tuesday | 82°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 31% |
| Tuesday Night | 60°F | Showers And Thunderstorms | 3 to 9 mph N | 78% |
| Wednesday | 74°F | Showers And Thunderstorms Likely | 5 mph NNE | 63% |
| Wednesday Night | 54°F | Chance Rain Showers | 3 mph NNE | 32% |
| Thursday | 80°F | Sunny | 2 mph ENE | 3% |
| Thursday Night | 58°F | Mostly Clear | 2 mph SE | 0% |
| Friday | 83°F | Sunny | 1 to 7 mph SSE | 6% |
| Friday Night | 64°F | Mostly Clear | 6 mph S | 12% |
| Saturday | 87°F | Sunny | 3 to 7 mph S | 10% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 9 mph SSW | 16% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 mph S | 16% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 8 mph SSE | 34% |
| Monday | 87°F | Chance Showers And Thunderstorms | 7 to 12 mph S | 34% |
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 Aug 4, 2026.