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Griffith Lake, IL Weather Forecast
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Griffith Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY |
 |  |  |  |  |  | | | | |  |
| Chance of T-Storm | Chance of T-Storm | Patchy Fog | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Chance of Showers |
| Hi: 79°FHi: 26°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM CDT Thu Sep 10 2026 
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Issued: 152 PM CDT Thu Sep 10 2026
Key Messages
- Scattered to numerous showers and thunderstorms are expected this afternoon and evening, decreasing overnight. A low end threat for a few severe storms (5% chance) is in place through this evening mainly for the south half of the region for some damaging wind potential.
- A somewhat unsettled pattern continues Friday and Saturday with a 40-50% chance for scattered showers and storms. The potential may be confined to west Kentucky and southwest Indiana on Saturday.
- After slightly cooler...