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Grayslake Middle School, IL Weather Forecast
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Grayslake Middle School Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | |  | | |  | |  |  | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of Showers | Partly Cloudy | Chance of Showers | Mostly Cloudy |
| Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C |
| POP: 50% | POP: 40% | POP: 30% | POP: 20% | POP: 20% | POP: 20% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 931 PM CDT Sat Aug 29 2026 
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Instant definitions for any meteorological term.
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Issued: 1228 AM CDT Sun Aug 30 2026
Key Messages
- Heat and humidity will return on Sunday and persist through much of the workweek.
- There may be a opportunities for showers and thunderstorms at times amidst plenty of dry hours.
Discussion
... Issued at 231 PM CDT Sat Aug 29 2026
Rest of Today:
Despite the ominous upstream radar earlier today, drier air at the lower levels has substantially eroded the rainfall footprint this afternoon (as expected). Thus expect occasional sprinkles and perhaps light showers sufficient to wet the ground i...