Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fog/Mist

69°F

21°C

Humidity 96%
Wind Speed S 8 mph
Barometer 29.93 in (1013.6 mb)
Dewpoint 68°F (20°C)
Visibility 6.00 mi
Last update 27 May 4:56 am CDT
Extended Forecast for

2 Miles WNW Opdyke IL

  • Overnight

    Overnight: A 30 percent chance of showers.  Mostly cloudy, with a steady temperature around 68. Light southwest wind.

    Low: 68 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 40%.

    High: 81 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 83. Light north northeast wind becoming east northeast 5 to 9 mph in the morning.

    High: 83 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63. East northeast wind around 6 mph.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 78. East wind around 7 mph.

    High: 78 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am.  Mostly cloudy, with a low around 62. East northeast wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 81. East northeast wind 3 to 8 mph.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. East northeast wind 5 to 7 mph.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers. Mostly cloudy, with a steady temperature around 68. Light southwest wind.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 64. Calm wind.
Thursday
Partly sunny, with a high near 83. Light north northeast wind becoming east northeast 5 to 9 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 63. East northeast wind around 6 mph.
Friday
Mostly cloudy, with a high near 78. East wind around 7 mph.
Friday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 62. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 81. East northeast wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 60. East northeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 78. East northeast wind around 9 mph.
Sunday Night
Partly cloudy, with a low around 58. Northeast wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 81. Light northeast wind becoming north northeast 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 58. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 80. Northeast wind 5 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Opdyke IL
 38.28°N 88.77°W
4:56 am CDT May 27, 2026
5am CDT May 27, 2026-6pm CDT Jun 2, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database