Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fog/Mist

79°F

26°C

Humidity 100%
Wind Speed S 5 mph
Barometer 29.86 in
Dewpoint 79°F (26°C)
Visibility 2.00 mi
Heat Index84°F (29°C)
Last update 27 Jul 12:38 am CDT
Extended Forecast for

2 Miles WNW Ottawa IL

  • Overnight

    Overnight: A slight chance of showers before 2am, then a slight chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 76. South southwest wind around 5 mph, with gusts as high as 10 mph.  Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 92. Heat index values as high as 105. Southeast wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 40%.

    High: 92 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 4am.  Partly cloudy, with a low around 71. West southwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. North northeast wind 5 to 10 mph becoming light northeast  after midnight.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of showers before 2am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 76. South southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
Monday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Southeast wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Monday Night
A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 71. West southwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 82. North northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 61. North northeast wind 5 to 10 mph becoming light northeast after midnight.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly cloudy, with a low around 67.
Friday
A chance of showers after 1pm. Mostly cloudy, with a high near 83.
Friday Night
A chance of showers. Mostly cloudy, with a low around 67.
Saturday
A chance of showers. Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Ottawa IL
 41.36°N 88.88°W
12:06 am CDT Jul 27, 2026
1am CDT Jul 27, 2026-6pm CDT Aug 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