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Great Oak Park Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Mostly Sunny | Mostly Cloudy | Partly Sunny | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Showers Likely | Showers Likely |
| Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 40% | POP: 30% | POP: 30% | POP: 60% | POP: 60% | POP: 70% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 422 AM EDT Fri Aug 28 2026 
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Issued: 1125 AM EDT Fri Aug 28 2026
Key Messages
1) Mainly dry and seasonable this weekend.
2) Periods of unsettled weather next week.
Discussion
... .KEY MESSAGE 1... Any showers and thunderstorms should be isolated in coverage this afternoon / early this evening, and expected to be right along the cold frontal boundary. Best chances look to be in S CT and Eastern LI, but could still see a few storms anywhere in the area this afternoon. Impacts are expected to be minimal to none. Otherwise, high temps this afternoon will be seasonal ...