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

Winter Storm System To Bring Widespread Impacts Across the Eastern Half of the U.S. Through Midweek

A developing winter storm system will bring a swath of heavy snow and ice from Oklahoma into the Midwest, Ohio Valley, Mid Atlantic, and the Northeast U.S. Tuesday through Wednesday. Areas of dangerous travel are likely. Further South, several inches of heavy rain will lead to the potential for flooding in the lower Mississippi and Tennessee River Valleys. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

A Few Clouds

28°F

-2°C

Humidity 75%
Wind Speed NE 7 mph
Barometer 30.56 in (1035.3 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 19 Feb 12:52 am CST
Extended Forecast for

Anna IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 27. North northeast wind around 5 mph.

    Mostly Cloudy

    Low: 27 °F

  • Tuesday

    Tuesday: A chance of rain between 2pm and 5pm, then rain and snow likely. Mostly cloudy, with a high near 37. East northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Mostly Cloudy
    then
    Rain/Snow
    Likely

    High: 37 °F

  • Tuesday
    Night

    Tuesday Night: Rain, possibly mixed with snow, becoming all rain after 10pm. Temperature rising to around 37 by 4am. East northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Rain/Snow
    then Rain

    Low: 34 °F⇑

  • Wednesday

    Wednesday: A 50 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 49. East southeast wind 6 to 9 mph becoming west southwest in the afternoon.

    Chance Rain
    then Slight
    Chance Rain

    High: 49 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 31. West southwest wind 5 to 7 mph becoming light and variable.

    Partly Cloudy

    Low: 31 °F

  • Thursday

    Thursday: Partly sunny, with a high near 45. Northeast wind 3 to 5 mph.

    Partly Sunny

    High: 45 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 33. East northeast wind 5 to 7 mph.

    Slight Chance
    Showers then
    Mostly Cloudy

    Low: 33 °F

  • Friday

    Friday: A slight chance of showers after noon. Mostly cloudy, with a high near 50. East wind around 8 mph.

    Mostly Cloudy
    then Slight
    Chance
    Showers

    High: 50 °F

  • Friday
    Night

    Friday Night: Showers, mainly after midnight. Cloudy, with a low around 44. East wind 5 to 8 mph.

    Showers

    Low: 44 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 27. North northeast wind around 5 mph.
Tuesday
A chance of rain between 2pm and 5pm, then rain and snow likely. Mostly cloudy, with a high near 37. East northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tuesday Night
Rain, possibly mixed with snow, becoming all rain after 10pm. Temperature rising to around 37 by 4am. East northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Wednesday
A 50 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 49. East southeast wind 6 to 9 mph becoming west southwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 31. West southwest wind 5 to 7 mph becoming light and variable.
Thursday
Partly sunny, with a high near 45. Northeast wind 3 to 5 mph.
Thursday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 33. East northeast wind 5 to 7 mph.
Friday
A slight chance of showers after noon. Mostly cloudy, with a high near 50. East wind around 8 mph.
Friday Night
Showers, mainly after midnight. Cloudy, with a low around 44. East wind 5 to 8 mph.
Saturday
Showers and possibly a thunderstorm. Cloudy, with a high near 60. South wind 5 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43. Southwest wind around 16 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 52. West wind 14 to 16 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 31. Northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 48. North northwest wind around 7 mph becoming east northeast in the afternoon.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
12:18 am CST Feb 19, 2019
Forecast Valid:
1am CST Feb 19, 2019-6pm CST Feb 25, 2019
 
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