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Saint John, Indiana Weather Forecast
Saint John, Indiana Weather
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Weather Forecast for Saint John, Indiana : Lake County
Issued: 3:11 am CST Dec 19, 2025 Latitude: 41.4500356 Longitude: -87.4700381 View on Google Maps

MouseOver for Detail Forecast
Overnight Friday Saturday Sunday Monday Tuesday Wednesday Christmas Day
20% chance of snow on Overnight Mostly Cloudy on Friday Partly Sunny on Saturday Sunny on Sunday Mostly Cloudy on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday Partly Sunny on Christmas Day
Low: 16°F High: 23°F High: 41°F High: 28°F High: 38°F High: 46°F High: 50°F High: 57°F
Low: 27 °F Low: 18°F Low: 21°F Low: 35°F Low: 32°F Low: 44°F  
Snow Mostly Cloudy Partly Sunny Sunny Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Sunny
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Current Conditions at
LANSING MUNICIPAL - (KIGQ)
16°
Feels like -2°F
Cloudy
as of 3:55 AM CST
Rel. Humidity: 56%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 29.66 in.
Flight Rule: MVFR
Wind Data
23 MPH
Gust: 33 MPH
270° West
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
GARY - (KGYY)
16°
Feels like 0°F
Cloudy
as of 3:55 AM CST
Rel. Humidity: 72%
Dew Point: 9°F
Visibility: 9 Miles
Pressure: 29.64 in.
Flight Rule: MVFR
Wind Data
18 MPH
Gust: 28 MPH
270° West
Cloud Level(s): Few at 1400ft, Broken at 2100ft, Solid Overcast at 3000ft
Current Conditions at
VALPARAISO - (KVPZ)
16°
Feels like -4°F
Cloudy
as of 3:56 AM CST
Rel. Humidity: 66%
Dew Point: 7°F
Visibility: 9 Miles
Pressure: 29.63 in.
Flight Rule: MVFR
Wind Data
29 MPH
Gust: 39 MPH
280° West
Cloud Level(s): Broken at 2600ft, Solid Overcast at 9000ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
16°
Feels like -1°F
Cloudy
Light Snow
as of 3:53 AM CST
Rel. Humidity: 61%
Dew Point: 5°F
Visibility: 8 Miles
Pressure: 29.65 in.
Flight Rule: MVFR
Wind Data
21 MPH
Gust: 33 MPH
270° West
Cloud Level(s): Few at 2000ft, Broken at 2800ft, Solid Overcast at 5500ft
20% chance of snow Overnight Overnight... Isolated snow showers. Mostly cloudy, with a steady temperature around 16. Wind chill values as low as -3. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Mostly Cloudy on Friday Friday... Mostly cloudy, then gradually becoming sunny, with a high near 23. Wind chill values as low as -5. Blustery, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a temperature rising to around 27 by 5am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 41. Breezy, with a south wind 10 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 18. West wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny on Sunday Sunday... Sunny, with a high near 28.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 21.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 38.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 35.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 46.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 32.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 50.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 44.
Partly Sunny on Christmas Day Christmas Day... Partly sunny, with a high near 57.
Current Radar Image


Sun Almanac for Saint John, Indiana
Sunrise: 07:12 AM
Sunset: 4:22 PM
Civil Sunrise:06:41 AM
Civil Sunset: 4:54 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 5:29 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:02 PM
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