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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Centralia Municipal Airport (KENL)

Lat: 38.51°NLon: 89.09°WElev: 525ft.

Overcast

70°F

21°C

Humidity 85%
Wind Speed SW 10 mph
Barometer 29.68 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 1 Aug 10:15 am CDT
Extended Forecast for

Aviston IL

  • Today

    Today: A chance of drizzle, mainly after 2pm. Cloudy, with a high near 74. West wind around 9 mph.

    High: 74 °F

    Cloudy then
    Chance
    Drizzle

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Patchy fog before 2am. Otherwise, cloudy, with a low around 67. North wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Scattered showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. North wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 79 °F

    Scattered
    Showers then
    Isolated
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 65. North wind 6 to 11 mph becoming light after midnight.

    Low: 65 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 82. North wind 3 to 6 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
A chance of drizzle, mainly after 2pm. Cloudy, with a high near 74. West wind around 9 mph.
Tonight
Showers likely, mainly before 11pm. Patchy fog before 2am. Otherwise, cloudy, with a low around 67. North wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Sunday
Scattered showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. North wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 65. North wind 6 to 11 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 82. North wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 86.
Wednesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 69.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Aviston IL
 38.6°N 89.61°W (Elev. 446 ft)
Last Update:
9:06 am CDT Aug 1, 2026
Forecast Valid:
10am CDT Aug 1, 2026-6pm CDT Aug 7, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation