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St. Augustine, IL 7-Day Weather Forecast
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St. Augustine Weather Forecast
St. Augustine, IL Weather Forecast Date: 737 PM CDT Sat Sep 05 2026
Weather forecast for St. Augustine, IL
Tonight Lo: 65°F Lo: 18°C |
Tonight... Partly cloudy this evening, then becoming mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph. |
Sun Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Sunday... Mostly sunny. Highs in the mid 80s. East winds 5 to 10 mph. |
| Labor Day Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Labor Day... Mostly sunny. Highs in the mid 80s. Southeast winds 5 to 10 mph. |
Tue Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Tuesday... Partly cloudy. Highs around 90. Lows in the lower 70s. |
| Wed Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Wednesday... Partly cloudy. Highs around 90. Lows in the lower 70s. |
| Wed Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Wednesday... Partly cloudy. Highs around 90. Lows in the lower 70s. |
Thu Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Thursday... Partly sunny. Highs in the lower 80s. |
| Fri Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Friday... Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. |
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