Key School, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Key School Weather Forecast
| OVERNIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
| Chance of T-Storm | Patchy Fog | Clearing | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Showers | Partly Cloudy |
| Lo: 75°FLo: 24°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C |
| POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1141 PM CDT Fri Sep 04 2026 

Key School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Key School Weather Map
Key School Quick Facts
Key School Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1228 AM CDT Sat Sep 5 2026
Key Messages
- Chance of scattered showers and thunderstorms tonight.
- Gradually turning cooler and less humid this weekend, though remaining seasonably warm.
- Moderate to high swim risk expected late Saturday into early Sunday during the final weekend of beach season.
Discussion
... Issued at 314 PM CDT Fri Sep 4 2026
Breezy east-northeasterly winds this morning in the wake of the outflow boundary have significantly impacted the ability to heat up through early afternoon. This has particularly been tru...
Weather World