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St. John IN Weather - Clear - 84°F
Clear
84°F
Updated 6:25 pm
Feels Like 84°F
Humidity 47%
Wind W 6 mph
Barometer  29.86 in
Dew Point 62°F
St. John IN Weather - Clear - 29°C
Clear
29°C
Updated 6:25 pm
Feels Like 29°C
Humidity 47%
Wind W 10 km/h
Barometer  101.1 kPa
Dew Point 17°C
St. John, IN Weather and Current Conditionsst. john in weather forecast

St. John, IN Weather Forecast

St. John Indiana WeatherSt. John, Indiana Weather Weather Forecast
14 day API forecast for St. John, Indiana. Note. The 7-day weather forecast for St. John, IN is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
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
St. John Weather - 2026-09-12 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
St. John Weather - 2026-09-12 - Afternoon - Sunny
90°F 32°C
Sunny
Early-Evening
St. John Weather - 2026-09-12 - Evening - Overcast
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
St. John Weather - 2026-09-13 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
St. John Weather - 2026-09-13 - Afternoon - Overcast
71°F 22°C
Overcast
Early-Evening
St. John Weather - 2026-09-13 - Evening - Overcast
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
St. John Weather - 2026-09-14 - Morning - Sunny
57°F 14°C
Sunny
Mid-Afternoon
St. John Weather - 2026-09-14 - Afternoon - Overcast
71°F 22°C
Overcast
Early-Evening
St. John Weather - 2026-09-14 - Evening - Overcast
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
St. John Weather - 2026-09-15 - Morning - Light Showers
66°F 19°C
Light Showers
Mid-Afternoon
St. John Weather - 2026-09-15 - Afternoon - Overcast
86°F 30°C
Overcast
Early-Evening
St. John Weather - 2026-09-15 - Evening - Overcast
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
St. John Weather - 2026-09-16 - Morning - Light Showers
71°F 22°C
Light Showers
Mid-Afternoon
St. John Weather - 2026-09-16 - Afternoon - Overcast
70°F 21°C
Overcast
Early-Evening
St. John Weather - 2026-09-16 - Evening - Overcast
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
St. John Weather - 2026-09-17 - Morning - Light Showers
62°F 17°C
Light Showers
Mid-Afternoon
St. John Weather - 2026-09-17 - Afternoon - Light Showers
64°F 18°C
Light Showers
Early-Evening
St. John Weather - 2026-09-17 - Evening - Light Fog
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
St. John Weather - 2026-09-18 - Morning - Overcast
63°F 17°C
Overcast
Mid-Afternoon
St. John Weather - 2026-09-18 - Afternoon - Cloudy
69°F 21°C
Cloudy
Early-Evening
St. John Weather - 2026-09-18 - Evening - Scattered Showers
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
St. John Weather - 2026-09-19 - Morning - Light Fog
66°F 19°C
Light Fog
Mid-Afternoon
St. John Weather - 2026-09-19 - Afternoon - Light Showers
71°F 22°C
Light Showers
Early-Evening
St. John Weather - 2026-09-19 - Evening - Light Fog
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
St. John Weather - 2026-09-20 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
St. John Weather - 2026-09-20 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
St. John Weather - 2026-09-20 - Evening - Overcast
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
St. John Weather - 2026-09-21 - Morning - Overcast
58°F 14°C
Overcast
Mid-Afternoon
St. John Weather - 2026-09-21 - Afternoon - Overcast
65°F 18°C
Overcast
Early-Evening
St. John Weather - 2026-09-21 - Evening - Overcast
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
St. John Weather - 2026-09-22 - Morning - Light Showers
58°F 15°C
Light Showers
Mid-Afternoon
St. John Weather - 2026-09-22 - Afternoon - Light Showers
60°F 15°C
Light Showers
Early-Evening
St. John Weather - 2026-09-22 - Evening - Scattered Showers
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
St. John Weather - 2026-09-23 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
St. John Weather - 2026-09-23 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
St. John Weather - 2026-09-23 - Evening - Sunny
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
St. John Weather - 2026-09-24 - Morning - Partly Cloudy
52°F 11°C
Partly Cloudy
Mid-Afternoon
St. John Weather - 2026-09-24 - Afternoon - Partly Cloudy
62°F 16°C
Partly Cloudy
Early-Evening
St. John Weather - 2026-09-24 - Evening - Sunny
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
St. John Weather - 2026-09-25 - Morning - Overcast
58°F 15°C
Overcast
Mid-Afternoon
St. John Weather - 2026-09-25 - Afternoon - Scattered Showers
78°F 25°C
Scattered Showers
Early-Evening
St. John Weather - 2026-09-25 - Evening - Overcast
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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Weather by the Numbers

Sat, 12th
St. John IN Weather - Saturday, Sep 12, 2026 - Partly Cloudy
Hi: 90°F 32°C
Lo: 63°F 17°C
Sunrise 06:27 AM
Sunset 07:04 PM
Wind WSW 6 mph10 km/h
Dew Point 70°F21°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 12% *
Humidity 76%
Sun, 13th
St. John IN Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 76°F 25°C
Lo: 60°F 15°C
Sunrise 06:28 AM
Sunset 07:02 PM
Wind N 8 mph13 km/h
Dew Point 49°F10°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 9% *
Humidity 40%
Mon, 14th
St. John IN Weather - Monday, Sep 14, 2026 - Overcast
Hi: 71°F 22°C
Lo: 51°F 11°C
Sunrise 06:29 AM
Sunset 07:01 PM
Wind ESE 11 mph18 km/h
Dew Point 42°F5°C
uv Index 6
Barometric Pressure 30.24 in1024 mb
POP 9% *
Humidity 38%
Tue, 15th
St. John IN Weather - Tuesday, Sep 15, 2026 - Partly Cloudy
Hi: 88°F 31°C
Lo: 62°F 17°C
Sunrise 06:30 AM
Sunset 06:59 PM
Wind SW 12 mph19 km/h
Dew Point 67°F19°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 5% *
Humidity 54%
Wed, 16th
St. John IN Weather - Wednesday, Sep 16, 2026 - Light Rain Shower
Hi: 73°F 23°C
Lo: 62°F 16°C
Sunrise 06:31 AM
Sunset 06:57 PM
Wind N 11 mph17 km/h
Dew Point 63°F17°C
uv Index 1
Barometric Pressure 30.27 in1025 mb
POP 64% *
Humidity 85%
Thu, 17th
St. John IN Weather - Thursday, Sep 17, 2026 - Light Rain Shower
Hi: 65°F 18°C
Lo: 61°F 16°C
Sunrise 06:32 AM
Sunset 06:55 PM
Wind NE 5 mph8 km/h
Dew Point 62°F17°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 73% *
Humidity 97%
Fri, 18th
St. John IN Weather - Friday, Sep 18, 2026 - Overcast
Hi: 70°F 21°C
Lo: 62°F 16°C
Sunrise 06:33 AM
Sunset 06:54 PM
Wind ENE 10 mph15 km/h
Dew Point 62°F17°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 25% *
Humidity 87%
Sat, 19th
St. John IN Weather - Saturday, Sep 19, 2026 - Light Rain Shower
Hi: 72°F 22°C
Lo: 57°F 14°C
Sunrise 06:34 AM
Sunset 06:52 PM
Wind ESE 9 mph14 km/h
Dew Point 65°F18°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 60% *
Humidity 81%
Sun, 20th
St. John IN Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 68°F 20°C
Lo: 57°F 14°C
Sunrise 06:35 AM
Sunset 06:50 PM
Wind NE 14 mph22 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 23% *
Humidity 79%
Mon, 21st
St. John IN Weather - Monday, Sep 21, 2026 - Overcast
Hi: 66°F 19°C
Lo: 54°F 12°C
Sunrise 06:36 AM
Sunset 06:48 PM
Wind ENE 15 mph24 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 19% *
Humidity 72%
Tue, 22nd
St. John IN Weather - Tuesday, Sep 22, 2026 - Moderate Or Heavy Rain Shower
Hi: 60°F 16°C
Lo: 58°F 14°C
Sunrise 06:37 AM
Sunset 06:47 PM
Wind NE 11 mph17 km/h
Dew Point 58°F15°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 81% *
Humidity 97%
Wed, 23rd
St. John IN Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 74°F 23°C
Lo: 57°F 14°C
Sunrise 06:38 AM
Sunset 06:45 PM
Wind WNW 11 mph18 km/h
Dew Point 48°F9°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 45%
Thu, 24th
St. John IN Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 62°F 17°C
Lo: 48°F 9°C
Sunrise 06:39 AM
Sunset 06:43 PM
Wind NW 6 mph10 km/h
Dew Point 35°F2°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 3% *
Humidity 42%
Fri, 25th
St. John IN Weather - Friday, Sep 25, 2026 - Overcast
Hi: 81°F 27°C
Lo: 51°F 10°C
Sunrise 06:40 AM
Sunset 06:41 PM
Wind SSW 17 mph28 km/h
Dew Point 49°F9°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 12% *
Humidity 51%
* POP = Probability of Precipitation. Data for 12:00 PM.