Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Overcast

52°F

11°C

Humidity 89%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 20 May 2:35 am CDT
Extended Forecast for

Raritan IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 47. North wind around 10 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 65. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. East wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 1pm.  Mostly cloudy, with a high near 64. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am.  Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 47. North wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 65. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 45. East wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 53.
Saturday
Mostly cloudy, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 57.
Memorial Day
Partly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Raritan IL
 40.69°N 90.83°W (Elev. 755 ft)
2:21 am CDT May 20, 2026
2am CDT May 20, 2026-6pm CDT May 26, 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