St. Johns Catholic Church, IL Weather Forecast
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St. Johns Catholic Church Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Sunny | Partly Cloudy | Partly Cloudy |
| Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Hi: 89°FHi: 32°C Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C Lo: 71°FLo: 22°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Hi: 81°FHi: 27°C Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C Lo: 65°FLo: 18°C |
| POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 456 PM CDT Tue Sep 01 2026 

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Issued: 239 PM CDT Tue Sep 1 2026
Key Messages
- Heat and humidity will look to impact most of the area through the end of the week. The Heat Advisory has been expanded across the rest of the DVN CWA. If the advisory needs to be extended in time into Friday or beyond, then we would be into the longevity aspect of the heat which may require an upgrade to a warning for parts of the area.
- The Storm Prediction Center has a Marginal, level 1 out of 5, Risk for severe storms along and north of the Highway 20 corridor through tonight. Dam...
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