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Wheaton High School, IL Weather Forecast
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Wheaton High School Weather Forecast
| REST OF TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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| Clear | Sunny | Clear | Sunny | Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy |
| Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 50°FLo: 10°C | Hi: 75°FHi: 24°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 120 AM CDT Sat Oct 17 2026 
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Issued: 202 AM CDT Sat Oct 17 2026
Key Messages
- Frost is expected tonight across northwest Indiana and especially east of I-55 in Illinois.
- An extended period of dry and unseasonably mild weather is expected the upcoming work week and likely into next weekend as well.
Discussion
... Issued at 202 AM CDT Sat Oct 17 2026
Lake effect showers are expected to end early this morning as inversion lower in the wake of the departing mid-upper level trough. Lake convergence band will gradually shift west this morning with lake effect cloudines...