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

Hazardous Weather Conditions

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Fair

90°F

32°C

Humidity 67%
Wind Speed NA
Barometer 29.97 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 29 Jun 5:35 pm CDT
Extended Forecast for

Saint Peter IL

Heat Advisory June 29, 05:50pm until July 3, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 29, 05:50pm until July 3, 10:00pm

    NOW until 10:00pm Fri

    Heat Advisory

  • Tonight

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 94. Heat index values as high as 109. Southwest wind 5 to 9 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South wind 3 to 7 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Heat index values as high as 106. Southwest wind 3 to 8 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75. South wind 3 to 6 mph.

    Low: 75 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 74. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 94. Heat index values as high as 109. Southwest wind 5 to 9 mph.
Tuesday Night
Clear, with a low around 74. South wind 3 to 7 mph.
Wednesday
Sunny, with a high near 94. Heat index values as high as 106. Southwest wind 3 to 8 mph.
Wednesday Night
Clear, with a low around 75. South wind 3 to 6 mph.
Thursday
Sunny, with a high near 94.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 75.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Sunny, with a high near 91.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Independence Day
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Peter IL
 38.86°N 88.83°W (Elev. 574 ft)
Last Update:
4:46 pm CDT Jun 29, 2026
Forecast Valid:
5pm CDT Jun 29, 2026-6pm CDT Jul 6, 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