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Washington Junior High School, IL Weather Forecast
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Washington Junior High School Weather Forecast
| OVERNIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY |
 |  | | | | | | | | | |
| Mostly Clear | Sunny | Clear | Sunny | Clear | Clear | Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 113 AM CDT Mon Aug 31 2026 
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Issued: 1251 AM CDT Mon Aug 31 2026
Key Messages
- A Heat Advisory is now in effect today through Friday for a prolonged heatwave. Daily heat index values up to 100-106 are expected.
- There is a 30-40% chance for isolated to scattered showers and thunderstorms on Friday and Saturday that may provide limited relief from the heat. Rainfall amounts locally up to a quarter of an inch are possible.
Discussion
... Issued at 1251 AM CDT Mon Aug 31 2026
A prolonged heatwave remains on track for the entire week with a 594 dm ridge now in control....