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Johannisburg Grade School, IL Weather Forecast
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Johannisburg Grade School Weather Forecast
| OVERNIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | | | | | | |  |  | | |
| Clear | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear |
| Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1027 PM CDT Mon Aug 31 2026 
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Meteorlogic Glosserator
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Issued: 1036 PM CDT Mon Aug 31 2026
Key Messages
- A late summer heat wave will continue through at least Friday.
Aviation
/00Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 1034 PM CDT Mon Aug 31 2026
Confidence is high in dry and VFR flight conditions prevailing at all local terminals through the forecast period.
Watches / Warnings / Advisories
/WARNINGS/ADVISORIES... MO...Heat Advisory until 8 PM CDT Friday for MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099. IL...Heat Advisory until 8 PM CDT Friday for ILZ058>060-06...