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

Severe Weather and Excessive Rain from the Southern Plains into the Mississippi Valley

Severe thunderstorms may produce tornadoes, some strong, damaging wind gusts above 70 mph, and very large hail exceeding 2 inches in diameter, and intense rainfall that may cause flash flooding tonight across much of the southern Plains and lower Missouri Valley. The severe thunderstorms and excessive rainfall will expand from east Texas into the Mississippi Valley on Sunday. Read More >

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

73°F

23°C

Humidity 66%
Wind Speed S 14 G 22 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 28 Apr 12:52 am CDT
Extended Forecast for

Alto Pass IL

  • Overnight

    Overnight: Partly cloudy, with a low around 65. South wind around 15 mph, with gusts as high as 28 mph.

    Partly Cloudy

    Low: 65 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Breezy, with a south wind 13 to 22 mph, with gusts as high as 34 mph.

    Mostly Sunny
    and Breezy

    High: 82 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. South wind 16 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Chance
    T-storms then
    Showers

    Low: 62 °F

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 72. South southwest wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    Showers

    High: 72 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 57. South wind 6 to 10 mph becoming west northwest after midnight.

    Chance
    T-storms

    Low: 57 °F

  • Tuesday

    Tuesday: Sunny, with a high near 79. Northwest wind 5 to 10 mph becoming south in the morning.

    Sunny

    High: 79 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 61. South wind around 11 mph.

    Mostly Clear

    Low: 61 °F

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    Mostly Sunny
    then Chance
    T-storms

    High: 83 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. South wind around 11 mph.

    Slight Chance
    T-storms then
    Chance
    Showers

    Low: 63 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 65. South wind around 15 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 82. Breezy, with a south wind 13 to 22 mph, with gusts as high as 34 mph.
Sunday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. South wind 16 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm. High near 72. South southwest wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 57. South wind 6 to 10 mph becoming west northwest after midnight.
Tuesday
Sunny, with a high near 79. Northwest wind 5 to 10 mph becoming south in the morning.
Tuesday Night
Mostly clear, with a low around 61. South wind around 11 mph.
Wednesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. South wind around 11 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South wind 11 to 17 mph, with gusts as high as 25 mph.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. West southwest wind around 14 mph, with gusts as high as 22 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55. West wind 9 to 11 mph, with gusts as high as 18 mph.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Northwest wind 9 to 11 mph becoming south in the afternoon.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Alto Pass IL
 37.57°N 89.32°W
Last Update:
12:18 am CDT Apr 28, 2024
Forecast Valid:
1am CDT Apr 28, 2024-6pm CDT May 4, 2024
 
Forecast Discussion
 
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Additional Resources

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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