Earlham, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Earlham, a city in Madison County, Iowa.
Overnight
45°F
Slight Chance Rain Showers
A slight chance of rain showers before 5am. Cloudy, with a low around 45. West northwest wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Earlham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Slight Chance Rain Showers | 15 mph WNW | 21% |
| Wednesday | 51°F | Mostly Cloudy | 14 to 17 mph W | 11% |
| Wednesday Night | 42°F | Mostly Cloudy then Chance Rain Showers | 14 mph W | 31% |
| Thursday | 52°F | Chance Rain Showers then Cloudy | 13 mph NW | 30% |
| Thursday Night | 39°F | Mostly Cloudy | 7 to 10 mph N | 6% |
| Friday | 50°F | Partly Sunny | 5 to 8 mph N | 3% |
| Friday Night | 30°F | Partly Cloudy | 3 mph ENE | 0% |
| Saturday | 54°F | Mostly Sunny | 5 mph SW | 0% |
| Saturday Night | 36°F | Mostly Clear | 6 mph WSW | 0% |
| Sunday | 60°F | Sunny | 6 mph W | 0% |
| Sunday Night | 38°F | Clear | 7 mph SW | 0% |
| Monday | 65°F | Sunny | 7 to 10 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 7 mph WNW | 0% |
| Tuesday | 64°F | Sunny | 5 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Earlham (41.494, -94.122). Updated through the day.
Growing snapshot for Earlham
Last spring frost
Apr 30
First fall frost
Oct 3
Growing season
157 days
Hardiness zone
5b
More local growing data for Earlham: nearby ZIP 50072 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Winterset 1S, Ia (12.1 mi from Earlham). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.