Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

65°F

18°C

Humidity	84%
Wind Speed	SW 3 mph
Barometer	29.84 in (1010.4 mb)
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Last update	18 Oct 12:56 am CDT

More Information:

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

Extended Forecast for

Dahlgren IL

Overnight
Low: 63 °F
Mostly Clear
Saturday
High: 83 °F
Chance
Showers then
Heavy Rain
Saturday Night
Low: 51 °F
Heavy Rain
then Showers
Likely
Sunday
High: 64 °F
Breezy.
Showers
Likely then
Chance
Showers
Sunday Night
Low: 40 °F
Clear
Monday
High: 71 °F
Sunny then
Sunny and
Breezy
Monday Night
Low: 48 °F
Mostly Clear
Tuesday
High: 65 °F
Sunny then
Sunny and
Breezy
Tuesday Night
Low: 37 °F
Clear

Detailed Forecast

Overnight

Mostly clear, with a low around 63. South wind around 8 mph.

Saturday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 83. South southwest wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

Saturday Night

Showers and possibly a thunderstorm before 4am, then showers likely. Some of the storms could produce heavy rainfall. Low around 51. South southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

Sunday

Showers likely, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 64. Breezy, with a west northwest wind 20 to 24 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

Sunday Night

Clear, with a low around 40. West northwest wind 5 to 10 mph becoming light west after midnight.

Monday

Sunny, with a high near 71. Breezy, with a south wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 26 mph.

Monday Night

Mostly clear, with a low around 48. South wind 10 to 17 mph becoming west after midnight. Winds could gust as high as 26 mph.

Tuesday

Sunny, with a high near 65. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 26 mph.

Tuesday Night

Clear, with a low around 37. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.

Wednesday

Sunny, with a high near 66. West northwest wind 5 to 9 mph.