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.

Partly Cloudy

88°F

31°C

Humidity	79%
Wind Speed	SE 6 mph
Barometer	29.87 in
Dewpoint	81°F (27°C)
Visibility	7.00 mi
Heat Index	106°F (41°C)
Last update	26 Jul 5:37 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Ottawa IL

Heat Advisory until July 26, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until July 26, 08:00pm
NOW until 8:00pm Sun
Heat Advisory
This Afternoon
High: 89 °F
Mostly Cloudy
Tonight
Low: 76 °F
Chance
T-storms
Monday
High: 91 °F
Chance
T-storms
Monday Night
Low: 71 °F
Slight Chance
T-storms
Tuesday
High: 85 °F
Mostly Sunny
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 84 °F
Sunny
Wednesday Night
Low: 63 °F
Clear

Detailed Forecast

This Afternoon

Mostly cloudy, with a high near 89. Heat index values as high as 104. Southwest wind around 5 mph, with gusts as high as 10 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 76. South southwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

Monday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 91. Heat index values as high as 105. East 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 85. North wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 63.

Wednesday

Sunny, with a high near 84.

Wednesday Night

Clear, with a low around 63.

Thursday

Sunny, with a high near 86.

Thursday Night

Mostly cloudy, with a low around 68.