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Il Dept of Corrections-Lawrence County, IL Weather Forecast
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Il Dept of Corrections-Lawrence County Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | LABOR DAY | TUESDAY |
 |  | | | | |  |  | | | |
| Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 75°FLo: 24°C | Hi: 100°FHi: 38°C | Lo: 79°FLo: 26°C | Hi: 101°FHi: 38°C | Lo: 75°FLo: 24°C | Hi: 100°FHi: 38°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 90°FHi: 32°C Lo: 65°FLo: 18°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1037 PM CDT Tue Sep 01 2026 
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Issued: 620 PM CDT Tue Sep 1 2026
Key Messages
- Dangerous Heat Wave Continues: Highs reaching the mid-90s to near 100 degrees will combine with lingering humidity to produce heat index values of 100 to 105+ degrees through Saturday. Highest probabilities (40-80%) for triple-digit heat focus south of I-74 through Wednesday.
- Isolated Storm Threat: A low probability (less than 20%) exists Thursday for an isolated pop-up afternoon or evening thunderstorm. While coverage will be sparse, strong instability could support an isolated seve...