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City of Jacksonville, ILJacksonville, IL 7-Day Weather Forecast
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Jacksonville Weather Forecast
Jacksonville, IL Weather Forecast Date: 337 PM CDT Sat Oct 10 2026
Weather forecast for Jacksonville, IL
Tonight Lo: 51°F Lo: 11°C |
Tonight... Mostly cloudy this evening, then clearing. Lows in the lower 50s. Southeast winds 5 to 10 mph. |
Sun Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Sunday... Sunny. Highs in the mid 80s. Light and variable winds, becoming south around 5 mph in the afternoon. |
| Columbus Day Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Columbus Day... Sunny. Highs in the lower 90s. Southwest winds 10 to 15 mph. |
| Tue Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Tuesday... Sunny. Highs around 90. |
Wed Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Wednesday... Showers likely. Cooler with highs in the upper 70s. Chance of rain 70%. |
| Thu Hi: 75°FHi: 24°C Lo: 51°F Lo: 11°C |
Thursday... Showers likely, mainly in the morning. Highs in the mid 70s. Chance of rain 60%. |
Fri Hi: 69°FHi: 21°C Lo: 41°F Lo: 5°C |
Friday... Partly sunny. Highs in the upper 60s. |
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