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

Unsettled Weather Continues in the Northwest; Tracking a Storm from the Plains to Northeast

Unsettled weather will persist across the western U.S. this week with heavy coastal rain and mountain snow for the Pacific Northwest. A storm will develop over the Central Plains and track to the Northeast through this weekend bringing a wintry mix over portions of the Plains and Midwest, heavy rain over the northern Gulf Coast and a potential for heavy snow in the Northeast this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

20°F

-7°C

Humidity 92%
Wind Speed Calm
Barometer 30.39 in (1029.8 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 22 Jan 2:52 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 21. South wind around 6 mph.

    Mostly Cloudy

    Low: 21 °F

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 37. South wind 6 to 11 mph, with gusts as high as 18 mph.

    Mostly Cloudy

    High: 37 °F

  • Wednesday
    Night

    Wednesday Night: Rain, snow, and freezing rain likely before 2am, then snow likely, possibly mixed with freezing rain between 2am and 3am, then snow likely after 3am. Cloudy, with a low around 30. South wind 7 to 9 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    Wintry Mix
    Likely

    Low: 30 °F

  • Thursday

    Thursday: Rain, snow, and freezing rain likely before 2pm, then rain likely between 2pm and 5pm, then rain and snow likely after 5pm. Cloudy, with a high near 38. South wind around 9 mph. Chance of precipitation is 70%.

    Wintry Mix
    Likely

    High: 38 °F

  • Thursday
    Night

    Thursday Night: Rain. Low around 31. South southeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 80%.

    Rain

    Low: 31 °F

  • Friday

    Friday: A chance of rain and snow before 10am, then a chance of rain. Cloudy, with a high near 39. West wind 3 to 7 mph. Chance of precipitation is 50%.

    Chance
    Rain/Snow
    then Chance
    Rain

    High: 39 °F

  • Friday
    Night

    Friday Night: A slight chance of rain and snow before midnight. Cloudy, with a low around 30. West wind 6 to 8 mph. Chance of precipitation is 20%.

    Slight Chance
    Rain/Snow
    then Cloudy

    Low: 30 °F

  • Saturday

    Saturday: Mostly cloudy, with a high near 39. West northwest wind 6 to 10 mph.

    Mostly Cloudy

    High: 39 °F

  • Saturday
    Night

    Saturday Night: Mostly cloudy, with a low around 29. West northwest wind 3 to 5 mph.

    Mostly Cloudy

    Low: 29 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 21. South wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 37. South wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Rain, snow, and freezing rain likely before 2am, then snow likely, possibly mixed with freezing rain between 2am and 3am, then snow likely after 3am. Cloudy, with a low around 30. South wind 7 to 9 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Thursday
Rain, snow, and freezing rain likely before 2pm, then rain likely between 2pm and 5pm, then rain and snow likely after 5pm. Cloudy, with a high near 38. South wind around 9 mph. Chance of precipitation is 70%.
Thursday Night
Rain. Low around 31. South southeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 80%.
Friday
A chance of rain and snow before 10am, then a chance of rain. Cloudy, with a high near 39. West wind 3 to 7 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of rain and snow before midnight. Cloudy, with a low around 30. West wind 6 to 8 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 39. West northwest wind 6 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 29. West northwest wind 3 to 5 mph.
Sunday
Mostly cloudy, with a high near 43. Light west wind.
Sunday Night
Mostly cloudy, with a low around 30. Calm wind.
Monday
Partly sunny, with a high near 50. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 34. Calm wind.
Tuesday
Mostly cloudy, with a high near 53. Calm wind becoming south around 6 mph.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
Last Update:
9:16 pm CST Jan 21, 2020
Forecast Valid:
3am CST Jan 22, 2020-6pm CST Jan 28, 2020
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation