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

75°F

24°C

Humidity 98%
Wind Speed NA
Barometer 29.90 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 27 Jun 4:35 pm CDT
Extended Forecast for

Saint Peter IL

Heat Advisory June 28, 12:00pm until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Showers and thunderstorms. High near 81. Southwest wind around 6 mph. Chance of precipitation is 100%.

    High: 81 °F

    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 70. Light south wind. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 90. Heat index values as high as 102. South wind 3 to 8 mph.

    High: 90 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 93. South wind 6 to 10 mph.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and thunderstorms. High near 81. Southwest wind around 6 mph. Chance of precipitation is 100%.
Tonight
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 70. Light south wind. Chance of precipitation is 50%.
Sunday
A 20 percent chance of showers and thunderstorms before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 90. Heat index values as high as 102. South wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 73. South wind 5 to 7 mph.
Monday
Mostly sunny, with a high near 93. South wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Clear, with a low around 74.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 74.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 73.
Independence Day
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 90.
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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:
2:31 pm CDT Jun 27, 2026
Forecast Valid:
4pm CDT Jun 27, 2026-6pm CDT Jul 4, 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