National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fog/Mist

37°F

3°C

Humidity 100%
Wind Speed W 1 mph
Barometer 30.20 in
Dewpoint 37°F (3°C)
Visibility 4.00 mi
Last update 23 Nov 8:15 am CST
Extended Forecast for

2 Miles WNW Denmark IA

Dense Fog Advisory until November 23, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until November 23, 10:00am

    NOW until 10:00am Sun

    Dense Fog Advisory

  • Today

    High: 55 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, increasing clouds, with a low around 40. South wind around 5 mph.

    Low: 40 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Rain likely, mainly after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 53. South wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 53 °F

    Chance Rain
    and Patchy
    Fog then Rain
    Likely

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Cloudy, with a low around 47. South wind around 5 mph. Chance of precipitation is 70%.

    Low: 47 °F

    Rain Likely

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 55. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Patchy fog after 3am. Otherwise, increasing clouds, with a low around 40. South wind around 5 mph.
Monday
Rain likely, mainly after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 53. South wind 5 to 10 mph. Chance of precipitation is 60%.
Monday Night
Rain likely, mainly before midnight. Cloudy, with a low around 47. South wind around 5 mph. Chance of precipitation is 70%.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 22.
Thanksgiving Day
Mostly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 38.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 26.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Denmark IA
 40.77°N 91.38°W (Elev. 725 ft)
Last Update:
8:26 am CST Nov 23, 2025
Forecast Valid:
8am CST Nov 23, 2025-6pm CST Nov 29, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation