St. John, IN 14 Day Weather - 46373 WeatherWorld.com
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St. John, IN Weather Forecast


St. John, IN Weather Forecast Dated: 625 PM Sat Sep 12 2026
Expect a mild stretch with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Saturday, September 12, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
80°F 27°C
Overcast
Sizzling hot near 90°F 32°C with a heat index reaching 96°F 36°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds turning from the SSW to the WNW at 7 mph 11 km/h.
Sunday, September 13, 2026
Mid-Morning
68°F 20°C
Overcast
Mid-Afternoon
71°F 22°C
Overcast
Early-Evening
64°F 18°C
Overcast
Comfortable with temperatures reaching 71°F 22°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds blowing from the NNE at 16 mph 25 km/h.
Monday, September 14, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
71°F 22°C
Overcast
Early-Evening
67°F 19°C
Overcast
Enjoyable around 71°F 22°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds moving from the ESE to the SE at 12 mph 19 km/h. Gusts up to 25 mph 40 km/h.
Tuesday, September 15, 2026
Mid-Morning
66°F 19°C
Light Showers
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
77°F 25°C
Overcast
Warm and summery around 86°F 30°C (feels like 90°F 32°C), early showers breaking for a drier afternoon, with steady humidity and steady pressure. Winds swinging from the SW to the WSW at 6 mph 9 km/h.
Wednesday, September 16, 2026
Mid-Morning
71°F 22°C
Light Showers
Mid-Afternoon
70°F 21°C
Overcast
Early-Evening
64°F 18°C
Overcast
Mild with a high of 70°F 21°C, scattered morning showers before drying out later, with steady humidity and steady pressure. Winds shifting from the N to the NNE at 10 mph 16 km/h.
Thursday, September 17, 2026
Mid-Morning
62°F 17°C
Light Showers
Mid-Afternoon
64°F 18°C
Light Showers
Early-Evening
63°F 17°C
Light Fog
Mildly cool near 64°F 18°C, showers through the afternoon, tapering off by evening, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
69°F 21°C
Cloudy
Early-Evening
68°F 21°C
Scattered Showers
Comfortable with temperatures reaching 69°F 21°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the NE to the ENE at 7 mph 12 km/h.
Saturday, September 19, 2026
Mid-Morning
66°F 19°C
Light Fog
Mid-Afternoon
71°F 22°C
Light Showers
Early-Evening
64°F 18°C
Light Fog
Enjoyable around 71°F 22°C, clouds building with afternoon showers likely, with increasing humidity and steady pressure. Winds switching from the E to the NNE at 12 mph 20 km/h.
Sunday, September 20, 2026
Mid-Morning
59°F 15°C
Scattered Showers
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
64°F 18°C
Overcast
Refreshing around 66°F 19°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds blowing from the ENE at 13 mph 21 km/h. Gusts up to 22 mph 36 km/h.
Monday, September 21, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
62°F 17°C
Overcast
Mildly cool near 65°F 18°C, overcast throughout the day, with steady humidity and steady pressure. Winds ENE at 14 mph 22 km/h. Gusts up to 24 mph 38 km/h.
Tuesday, September 22, 2026
Mid-Morning
58°F 15°C
Light Showers
Mid-Afternoon
60°F 15°C
Light Showers
Early-Evening
60°F 15°C
Scattered Showers
Comfortable at 60°F 15°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the NE to the NNE at 12 mph 20 km/h. Gusts up to 24 mph 38 km/h.
Wednesday, September 23, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
64°F 18°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the W to the WNW at 10 mph 16 km/h. Gusts up to 24 mph 38 km/h.
Thursday, September 24, 2026
Mid-Morning
52°F 11°C
Partly Cloudy
Mid-Afternoon
62°F 16°C
Partly Cloudy
Early-Evening
56°F 14°C
Sunny
Refreshing around 62°F 16°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
78°F 25°C
Scattered Showers
Early-Evening
75°F 24°C
Overcast
Mild temperatures up to 78°F 25°C, scattered downpours possible, with steady humidity and barometric pressure falling. Winds switching from the S to the WNW at 10 mph 15 km/h.
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