Saint John, Indiana Weather
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Weather Forecast for Saint John, Indiana : Lake County
Issued: 9:26 am CDT Sep 16, 2025 Latitude: 41.4500356 Longitude: -87.4700381 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on This Afternoon Mostly Clear on Tonight Sunny on Wednesday Sunny on Thursday Mostly Sunny on Friday 20% chance of on Saturday 20% chance of on Sunday 20% chance of on Monday
High: 81°F Low: 58°F High: 83°F High: 85°F High: 84°F High: 78°F High: 78°F High: 81°F
Low: 59°F Low: 61°F Low: 63°F Low: 61°F Low: 63°F  
Sunny Mostly Clear Sunny Sunny Mostly Sunny Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
LANSING MUNICIPAL - (KIGQ)
79°
Clear
as of 11:55 AM CDST
Rel. Humidity: 47%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
6 MPH
080° East
Cloud Level(s): Clear
Current Conditions at
GARY - (KGYY)
77°
Clear
as of 11:50 AM CDST
Rel. Humidity: 61%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
8 MPH
050° Northeast
Cloud Level(s): Clear
Current Conditions at
VALPARAISO - (KVPZ)
81°
Clear
as of 11:56 AM CDST
Rel. Humidity: 44%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
7 MPH
060° Northeast
Cloud Level(s): Clear
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
81°
Mostly Clear
as of 11:53 AM CDST
Rel. Humidity: 39%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
7 MPH
090° East
Cloud Level(s): Few at 25000ft
Sunny on This Afternoon This Afternoon... Sunny, with a high near 81. Northeast wind around 10 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 58. North northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.
Sunny on Thursday Thursday... Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 61.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 84.
20% chance of rain Friday Night Friday Night... A chance of showers after 1am. Mostly cloudy, with a low around 63.
20% chance of Saturday Saturday... A chance of showers after 1pm. Partly sunny, with a high near 78.
20% chance of rain Saturday Night Saturday Night... A chance of showers. Mostly cloudy, with a low around 61.
20% chance of Sunday Sunday... A chance of showers. Partly sunny, with a high near 78.
20% chance of rain Sunday Night Sunday Night... A chance of showers. Mostly cloudy, with a low around 63.
20% chance of Monday Monday... A chance of showers. Partly sunny, with a high near 81.
Current Radar Image


Sun Almanac for Saint John, Indiana
Sunrise: 06:32 AM
Sunset: 6:57 PM
Civil Sunrise:06:04 AM
Civil Sunset: 7:25 PM
Nautical Sunrise: 05:31 AM
Nautical Sunset: 7:58 PM
Astro Sunrise: 04:58 AM
Astro Sunset: 8:31 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.