Remnants of Arthur and Heavy Rainfall Across the South; Fire Weather Threat in the West

Life-threatening, potentially catastrophic flash flooding expected along the central Gulf Coast as the remnants of Arthur track across the area. Isolated brief tornadoes and damaging gusts remain possible overnight in the Southeast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts of the West Friday. Read More >

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

61°F

16°C

Humidity 83%
Wind Speed SW 6 mph
Barometer 29.91 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Jun 1:23 am CDT
Extended Forecast for

Ottawa IL

  • Overnight

    Overnight: Mostly clear, with a low around 56. West wind around 5 mph.

    Low: 56 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 78. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 60. West wind around 5 mph, with gusts as high as 15 mph.  Chance of precipitation is 50%.

    Low: 60 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am.  Partly cloudy, with a low around 59. West northwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall.  High near 73. Chance of precipitation is 90%.

    High: 73 °F

    Showers
    Likely then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm.  Low around 59. Breezy.  Chance of precipitation is 80%.

    Low: 59 °F

    Showers and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 56. West wind around 5 mph.
Juneteenth
Sunny, with a high near 78. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. West wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Saturday
Sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 59. West northwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.
Sunday
Showers likely, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 73. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm. Low around 59. Breezy. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 59.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Ottawa IL
 41.35°N 88.85°W
1:21 am CDT Jun 19, 2026
1am CDT Jun 19, 2026-6pm CDT Jun 25, 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