| National Weather Service Forecast for:
Peoria, IL Issued by: National Weather Service Central Illinois |
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| Updated: 08/31/2026 10:36pm | ||||||||||||||||||||||||||||||||||||||||
| Peoria | ||||||||||||||||||||||||||||||||||||||||
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Heat Advisory issued August 31 at 9:30PM CDT until September 3 at 7:00PM CDT
Heat Advisory issued August 31 at 12:12PM CDT until September 3 at 7:00PM CDT
| Tonight |
Mostly clear, with a low around 75. South southwest wind 5 to 8 mph. |
| Tuesday |
Sunny, with a high near 96. Heat index values as high as 103. Southwest wind around 7 mph. |
| Tuesday Night |
Mostly clear, with a low around 76. Heat index values as high as 100. South southwest wind around 6 mph. |
| Wednesday |
Sunny, with a high near 97. Heat index values as high as 103. Southwest wind around 8 mph. |
| Wednesday Night |
Mostly clear, with a low around 77. South southwest wind around 6 mph. |
| Thursday |
Sunny, with a high near 95. Southwest wind around 6 mph. |
| Thursday Night |
Mostly clear, with a low around 75. South southeast wind around 5 mph. |
| Friday |
A slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 92. |
| Friday Night |
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. |
| Saturday |
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 91. |
| Saturday Night |
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 69. |
| Sunday |
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 86. |
| Sunday Night |
Partly cloudy, with a low around 68. |
| Labor Day |
Mostly sunny, with a high near 87. |
Forecast from NOAA-NWS for Peoria, IL.