Severe Thunderstorms Possible From The Plains To The Great Lakes, Heat Wave To Continue Over The Southern U.S.

Scattered strong to severe thunderstorms capable of damaging winds, large hail, isolated tornadoes, and heavy rainfall will be possible through tonight from the central Plains to the Great Lakes and Northeast U.S. The heavy rainfall could lead to localized flash flooding. Excessive heat will persist across the southern Plains and Desert Southwest early this week. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

26°C

78°F

Humidity 69%
Wind Speed S 30 G 39 km/h
Barometer 29.79 in
Dewpoint 19°C (67°F)
Visibility 16 km
Heat Index27°C (80°F)
Last update 18 Aug 12:35 pm CDT
Extended Forecast for

Ottawa IL

  • This
    Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Mostly cloudy, with a high near 29. Southwest wind around 25 km/h, with gusts as high as 40 km/h.

    Chance
    T-storms

    High: 29 °C

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 4am.  Mostly cloudy, with a low around 21. West southwest wind 5 to 10 km/h becoming north northwest after midnight.

    Chance
    T-storms

    Low: 21 °C

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms before 7am.  Partly sunny, with a high near 29. North northeast wind 5 to 10 km/h becoming east southeast in the afternoon.

    Slight Chance
    T-storms then
    Partly Sunny

    High: 29 °C

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 19. Calm wind.

    Partly Cloudy

    Low: 19 °C

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 32. Calm wind. Winds could gust as high as 20 km/h.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 32 °C

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 22.

    Chance
    T-storms

    Low: 22 °C

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 28.

    Chance
    T-storms

    High: 28 °C

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 16.

    Partly Cloudy

    Low: 16 °C

  • Thursday

    Thursday: Mostly sunny, with a high near 27.

    Mostly Sunny

    High: 27 °C

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 29. Southwest wind around 25 km/h, with gusts as high as 40 km/h.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 21. West southwest wind 5 to 10 km/h becoming north northwest after midnight.
Monday
A 10 percent chance of showers and thunderstorms before 7am. Partly sunny, with a high near 29. North northeast wind 5 to 10 km/h becoming east southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 19. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32. Calm wind. Winds could gust as high as 20 km/h.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 22.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 27.
Thursday Night
Mostly clear, with a low around 16.
Friday
Sunny, with a high near 27.
Friday Night
Partly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 28.
Click Map For Forecast
Point Forecast:
Ottawa IL
 41.35°N 88.85°W
12:16 pm CDT Aug 18, 2019
12pm CDT Aug 18, 2019-6pm CDT Aug 24, 2019
 
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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