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San Juan Headstart, IL 7-Day Weather Forecast
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San Juan Headstart Weather Forecast
San Juan Headstart, IL Weather Forecast Date: 636 PM CDT Wed Aug 05 2026
Weather forecast for San Juan Headstart, IL
Tonight Lo: 65°F Lo: 18°C |
Tonight... Mostly cloudy. A slight chance of showers early in the evening. Patchy fog in the late evening and overnight. Lows in the mid 60s. Northwest winds around 5 mph in the evening, becoming light and variable. Chance of precipitation 20%. |
Thu Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Thursday... Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the upper 70s. East winds around 5 mph. |
Fri Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Friday... Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of showers in the afternoon. Humid with highs in the lower 80s. South winds 5 to 10 mph. Chance of precipitation 20%. |
Sat Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Saturday... Partly cloudy in the morning, then becoming mostly sunny. Highs in the lower 80s. |
Sun Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Sunday... Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of precipitation 30%. |
| Mon Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Monday... Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the morning. Highs in the lower 80s. Chance of precipitation 60%. |
Tue Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Tuesday... Mostly cloudy with a chance of showers. Highs in the upper 70s. Chance of precipitation 30%. |
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