Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

79°F

26°C

Humidity	94%
Wind Speed	S 8 mph
Barometer	29.93 in
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	10 Aug 10:55 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Fort Madison IA

Heat Advisory August 11, 12:00pm until August 11, 08:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 76 °F
Patchy Fog
Tuesday
High: 93 °F
Slight Chance
T-storms and
Patchy Fog
then Mostly
Sunny
Tuesday Night
Low: 75 °F
Partly Cloudy
then Slight
Chance
Showers
Wednesday
High: 91 °F
Chance
T-storms then
Chance
Showers
Wednesday Night
Low: 72 °F
Partly Cloudy
then Showers
Likely
Thursday
High: 85 °F
Showers
Thursday Night
Low: 70 °F
Showers
Friday
High: 84 °F
Chance
T-storms
Friday Night
Low: 71 °F
Partly Cloudy
then Chance
Showers

Detailed Forecast

Tonight

Patchy fog after 4am. Otherwise, partly cloudy, with a low around 76. South wind around 5 mph.

Tuesday

A slight chance of showers and thunderstorms between 8am and 9am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 93. Heat index values as high as 105. South wind 5 to 10 mph. Chance of precipitation is 20%.

Tuesday Night

A 10 percent chance of showers after 5am. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming northeast in the evening.

Wednesday

A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly sunny, with a high near 91. Heat index values as high as 102. South wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 50%.

Wednesday Night

Showers likely after 1am. Partly cloudy, with a low around 72. Chance of precipitation is 60%.

Thursday

Showers and possibly a thunderstorm. High near 85. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Low around 70. Chance of precipitation is 80%.

Friday

A 50 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 84.

Friday Night

A 40 percent chance of showers after 1am. Partly cloudy, with a low around 71.

Saturday

Partly sunny, with a high near 88.

Saturday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

Sunday

A 30 percent chance of showers. Partly sunny, with a high near 85.