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Town of St. John, INSt. John, IN 7-Day Weather Forecast
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St. John Weather Forecast
St. John, IN Weather Forecast Date: 301 AM CDT Tue Sep 15 2026
Weather forecast for St. John, IN
Morning Hi: 65°FHi: 18°C |
Early This Morning... Mostly cloudy. A slight chance of showers late. Temperatures in the mid 60s. South winds 10 to 15 mph. Gusts up to 25 mph late. Chance of precipitation 20%. |
Today Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Today... Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms in the morning, then a slight chance of showers and thunderstorms early in the afternoon. A chance of showers and thunderstorms late. More humid. Highs in the mid 80s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph in the afternoon. Chance of precipitation 50%. |
| Wed Hi: 75°FHi: 24°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly cloudy. A chance of showers with a slight chance of thunderstorms. Humid with highs in the mid 70s. Northeast winds around 5 mph. Chance of precipitation 50%. |
| Thu Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Thursday... Mostly cloudy. Showers likely in the morning. A slight chance of thunderstorms. A slight chance of showers in the afternoon. Humid with highs in the upper 70s. West winds around 5 mph, becoming north in the afternoon. Chance of precipitation 60%. |
| Fri Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Friday... Mostly cloudy with a 20% chance of showers. Highs in the upper 70s. |
| Sat Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Saturday... Mostly cloudy in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40%. |
| Sun Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Sunday... Mostly cloudy with a chance of showers. Highs in the mid 70s. Chance of precipitation 40%. |
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