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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Olney-Noble Airport (KOLY)

Lat: 38.72°NLon: 88.18°WElev: 479ft.

Thunderstorm

72°F

22°C

Humidity 94%
Wind Speed SE 8 mph
Barometer 29.59 in
Dewpoint 70°F (21°C)
Visibility 3.00 mi
Last update 17 Jun 2:55 pm CDT
Extended Forecast for

Olney IL

Tornado Watch until June 17, 10:00pm
Wind Advisory until June 17, 07:00pm
Click here for hazard details and duration
Tornado Watch
Wind Advisory
  •  
    Tornado Watch until June 17, 10:00pm
    Wind Advisory until June 17, 07:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 85 °F

    T-storms
    Likely and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 70. Breezy, with a west southwest wind 19 to 24 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Heavy Rain
    and Breezy

  • Thursday

    Thursday: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 81. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Light and variable wind.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the morning.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly before 4pm. Mostly sunny, with a high near 85. Breezy, with a south southwest wind around 25 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 70. Breezy, with a west southwest wind 19 to 24 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 81. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Thursday Night
Partly cloudy, with a low around 60. West northwest wind 5 to 7 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 64. Light and variable wind.
Saturday
Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the morning.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Sunday
Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 67. Chance of precipitation is 90%.
Monday
A chance of showers. Partly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Olney IL
 38.73°N 88.09°W (Elev. 446 ft)
Last Update:
2:41 pm CDT Jun 17, 2026
Forecast Valid:
3pm CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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