Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

73°F

23°C

Humidity	94%
Wind Speed	SE 7 mph
Barometer	29.95 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	19 Sep 1:15 am CDT

More Information:

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

Extended Forecast for

Pontoosuc IL

Overnight
Low: 74 °F
Patchy Fog
Saturday
High: 87 °F
Slight Chance
Showers and
Patchy Fog
then Mostly
Cloudy
Saturday Night
Low: 70 °F
Chance
T-storms then
Showers
Likely
Sunday
High: 76 °F
Showers
Sunday Night
Low: 61 °F
Chance
T-storms then
Showers
Likely
Monday
High: 65 °F
Showers
Likely
Monday Night
Low: 57 °F
Mostly Cloudy
then Chance
Showers
Tuesday
High: 63 °F
Partly Sunny
Tuesday Night
Low: 54 °F
Partly Cloudy

Detailed Forecast

Overnight

Patchy fog after 4am. Otherwise, partly cloudy, with a low around 74. Southeast wind around 10 mph.

Saturday

A 20 percent chance of showers before 8am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 87. South wind 5 to 10 mph.

Saturday Night

Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 70. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 70%.

Sunday

Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 76. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Sunday Night

A chance of showers and thunderstorms before 1am, then showers likely between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 61. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Monday

Showers likely and possibly a thunderstorm. Cloudy, with a high near 65. Chance of precipitation is 60%.

Monday Night

A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 57.

Tuesday

Partly sunny, with a high near 63.

Tuesday Night

Partly cloudy, with a low around 54.

Wednesday

Mostly sunny, with a high near 68.

Wednesday Night

Partly cloudy, with a low around 57.