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Clarksville, IL Weather Forecast
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Clarksville Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Partly Cloudy | Sunny | Clear | Clear | Partly Cloudy | Partly Cloudy |
| Lo: 70°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 50°FLo: 10°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Hi: 69°FHi: 21°C Lo: 35°FLo: 2°C | Hi: 69°FHi: 21°C Lo: 35°FLo: 2°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C |
| POP: 30% | POP: 70% | POP: 20% | POP: 70% | POP: 90% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Wed Oct 14 2026 
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Issued: 1229 AM CDT Wed Oct 14 2026
Key Messages
- There is a Marginal Risk (level 1 of 5) for severe weather west of I-57 tonight. The primary risk will be isolated damaging wind gusts between 9pm and 3am.
- Another round of strong to potentially severe thunderstorms may accompany a strong cold front late Thursday afternoon and evening. The most recent SPC outlook highlights locations along and south of the I-72 corridor.
- Much cooler weather will settle into the region this weekend, potentially resulting in frost both Saturday and Sun...