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.

Overcast

69°F

21°C

Humidity 96%
Wind Speed SW 6 mph
Barometer 29.92 in (1013.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 27 May 3:56 am CDT
Extended Forecast for

3 Miles NNE Sesser IL

  • Overnight

    Overnight: A 20 percent chance of showers.  Patchy fog.  Otherwise, mostly cloudy, with a steady temperature around 68. Light west northwest wind.

    Low: 68 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 30%.

    High: 82 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Partly sunny, with a high near 84. Light north northeast wind becoming east northeast 5 to 9 mph in the morning.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. East northeast wind 5 to 7 mph.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 4pm.  Mostly cloudy, with a high near 79. East wind around 7 mph.  Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 82. East northeast wind 3 to 7 mph.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. East northeast wind 5 to 7 mph.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 68. Light west northwest wind.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 64. Calm wind.
Thursday
Partly sunny, with a high near 84. Light north northeast wind becoming east northeast 5 to 9 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 64. East northeast wind 5 to 7 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 79. East wind around 7 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. East northeast wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 62. East northeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 79. East northeast wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 59. Northeast wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 81. Northeast wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 59. Northeast wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81. East northeast wind 5 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Sesser IL
 38.14°N 89.04°W
4:41 am CDT May 27, 2026
4am 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