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Altamont High School, IL Weather Forecast

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Altamont High School, IL Weather Forecast

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Altamont High School IL weather - Clear - 49°F
Clear
49°F
Updated 7:43 am
Feels Like 53°F
Humidity 94%
Wind N 0 mph
Barometer  30.07 in
Dew Point 48°F
Altamont High School IL weather - Clear - 10°C
Clear
10°C
Updated 7:43 am
Feels Like 12°C
Humidity 94%
Wind N 0 km/h
Barometer  101.8 kPa
Dew Point 9°C
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Altamont High School Weather Forecast

REST OF TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SUNDAY SUNDAY NIGHT
Altamont High School, IL Weather - Rest Of Tonight Clear Altamont High School, IL Weather - Tuesday Sunny Altamont High School, IL Weather - Tuesday Night Partly Cloudy Altamont High School, IL Weather - Wednesday Partly Sunny Altamont High School, IL Weather - Wednesday Night Mostly Cloudy Altamont High School, IL Weather - Thursday Mostly Cloudy Altamont High School, IL Weather - Thursday Night Showers Likely Altamont High School, IL Weather - Friday Showers Altamont High School, IL Weather - Friday Night Chance Of Showers Altamont High School, IL Weather - Saturday Chance Of Showers Altamont High School, IL Weather - Sunday Mostly Sunny Altamont High School, IL Weather - Sunday Night Mostly Clear
Clear Sunny Partly Cloudy Partly Sunny Mostly Cloudy Mostly Cloudy Showers Likely Showers Chance of Showers Chance of Showers Mostly Sunny Mostly Clear
Lo: 50°FLo: 10°C Hi: 81°FHi: 27°C
 Lo: 59°FLo: 15°C Hi: 89°FHi: 32°C
 Lo: 69°FLo: 21°C Hi: 89°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 75°FHi: 24°C
 Hi: 69°FHi: 21°C
Lo: 55°FLo: 13°C		 Hi: 69°FHi: 21°C
Lo: 55°FLo: 13°C		 Hi: 69°FHi: 21°C
 Hi: 69°FHi: 21°C
Lo: 50°FLo: 10°C
POP: 60% POP: 80% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Tue Sep 29 2026 Altamont High School, IL Weather - WeatherWorld.com

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Issued: 543 AM CDT Tue Sep 29 2026

Key Messages

  • Warm Midweek Temperatures: Highs will reach the low to mid-80s today and Wednesday, running 5 to 10 degrees above typical late-September averages.
  • Initial Rain Chances Wednesday: Rain chances increase late tonight into Wednesday, particularly near the Illinois River Valley, though confidence in widespread rain remains low before Thursday.
  • Heavy Rain Potential Thursday to Friday: Widespread heavy rain is expected Thursday through Friday. Areas north of Interstate 70 have a 50-80% chan...