Fort Madison, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Madison, a city in Lee County, Iowa.
Today
89°F
Mostly Sunny
Mostly sunny, with a high near 89. South wind around 5 mph.
7-day forecast for Fort Madison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny | 5 mph S | 3% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 24% |
| Wednesday | 83°F | Chance Showers And Thunderstorms | 5 mph S | 71% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph N | 81% |
| Thursday | 82°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph NE | 74% |
| Thursday Night | 66°F | Mostly Clear | 0 to 5 mph E | 10% |
| Friday | 85°F | Mostly Sunny | 0 to 5 mph S | 7% |
| Friday Night | 69°F | Slight Chance Showers And Thunderstorms | 5 mph SE | 20% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Sunny | 5 to 10 mph S | 20% |
| Saturday Night | 74°F | Mostly Clear | 5 to 10 mph S | 7% |
| Sunday | 91°F | Sunny | 10 mph SW | 7% |
| Sunday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 19% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 19% |
| Monday Night | 74°F | Chance Showers And Thunderstorms | 10 mph SW | 27% |
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
Donnellson
Farmington
Franklin
Hillsboro
Houghton
Keokuk
Montrose
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 Aug 4, 2026.