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Blackhawk Prairie Park Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Patchy Fog | Patchy Fog | Partly Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Clearing |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C |
| POP: 50% | POP: 20% | POP: 40% | POP: 20% | POP: 30% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 956 PM CDT Thu Aug 27 2026 
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Issued: 615 PM CDT Thu Aug 27 2026
Key Messages
- Increasing heat and humidity expected next week with periodic shower and storm chances.
Discussion
... Issued at 147 PM CDT Thu Aug 27 2026
Surface high pressure over the Great Lakes will maintain tranquil weather through Friday. Light winds overnight may lead to a brief period of patchy ground fog early Friday morning, primarily in interior northern Illinois. Otherwise, afternoon conditions on Friday remain comfortable with partly cloudy skies and high temperatures in the lower 80s.
A s...