St. Joseph, IL Weather Forecast

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St. Joseph, IL Weather Forecast

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St. Joseph IL weather  - Mostly Cloudy - 39°F
Mostly Cloudy
39°F
Updated 9:50 am
Feels Like 31°F
Humidity 66%
Wind N 17 mph
Barometer  30.03 in
Dew Point 29°F
St. Joseph IL weather  - Mostly Cloudy - 4°C
Mostly Cloudy
4°C
Updated 9:50 am
Feels Like -0°C
Humidity 66%
Wind N 27 km/h
Barometer  101.7 kPa
Dew Point -2°C

St. Joseph Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
St. Joseph, IL Weather - Today Rain/Snow Showers St. Joseph, IL Weather - Tonight Chance Of Snow St. Joseph, IL Weather - Saturday Clearing St. Joseph, IL Weather - Saturday Night Mostly Clear St. Joseph, IL Weather - Sunday Sunny St. Joseph, IL Weather - Sunday Night Clear St. Joseph, IL Weather - Monday Sunny St. Joseph, IL Weather - Monday Night Clear St. Joseph, IL Weather - Tuesday Sunny St. Joseph, IL Weather - Tuesday Night Clear St. Joseph, IL Weather - Wednesday Partly Cloudy St. Joseph, IL Weather - Wednesday Night Partly Cloudy
Rain/Snow Showers Chance of Snow Clearing Mostly Clear Sunny Clear Sunny Clear Sunny Clear Partly Cloudy Partly Cloudy
Hi: 40°FHi: 4°C
Lo: 35°FLo: 2°C Hi: 45°FHi: 7°C
Lo: 31°FLo: -1°C Hi: 49°FHi: 9°C
Lo: 31°FLo: -1°C Hi: 49°FHi: 9°C
Lo: 31°FLo: -1°C Hi: 51°FHi: 11°C
Lo: 31°FLo: -1°C Hi: 55°FHi: 13°C
Lo: 39°FLo: 4°C
POP: 100% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 836 AM CST Fri Nov 13 2026 St. Joseph, IL Weather - WeatherWorld.com

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Issued: 544 AM CST Fri Nov 13 2026

Key Messages

  • Prolonged lake effect rain and at times snow showers will continue through at least Saturday morning, especially in northwest IN.
  • Rain will transition to snow through early this morning, resulting in a few inches of wet, slushy accumulations that will lead to some localized travel impacts. At or above- freezing temperatures are expected to limit the coverage of impacts, however.
  • Cooler temperatures are expected through the weekend before temperatures warm next week.

Discussion

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