Fort Madison, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Madison, a city in Lee County, Iowa.
Overnight
54°F
Mostly Cloudy
Mostly cloudy, with a low around 54. Southwest wind around 15 mph.
7-day forecast for Fort Madison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Mostly Cloudy | 15 mph SW | 8% |
| Wednesday | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 16% |
| Wednesday Night | 48°F | Mostly Cloudy | 10 to 15 mph SW | 3% |
| Thursday | 57°F | Mostly Cloudy then Chance Rain Showers | 10 mph W | 36% |
| Thursday Night | 46°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NW | 23% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 5% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 38°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 59°F | Sunny | 5 mph W | 1% |
| Sunday Night | 40°F | Clear | 5 mph W | 0% |
| Monday | 64°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 45°F | Clear | 5 mph W | 0% |
| Tuesday | 65°F | Sunny | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Fort Madison (40.621, -91.349). Updated through the day.
Growing snapshot for Fort Madison
Last spring frost
Apr 12
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
6a
More local growing data for Fort Madison: nearby ZIP 52627 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Argyle
Denmark
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Mooar
Oak Hills
Sandusky
St. Paul
West Point
Wever
Climate data from the nearest NOAA station, Ft Madison, Ia (2.8 mi from Fort Madison). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.