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Glenn Weather Warning NWS WEATHER ALERT FOR THE GLENN, IL AREA - Issued: 252 AM CDT Sat Sep 5 2026 Glenn Weather Warning

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Glenn, IL Weather - Hour by Hour Forecast

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Glenn, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 72°F22°C, dew point 70°F21°C, humidity 93%. Wind direction is N at 0 mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 29.93 in1014 mb.
Overnight - Clear. Lows in the mid 70s. Calm winds... Full Forecast
Saturday - Sunny, hot with highs in the upper 90s. Northwest winds around 5 mph. Highest heat index readings heat index readings up to 108 in.. Full Forecast

Glenn Hourly Weather

24 Hour Forecast Scroll
Sat, Sep 05
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Midnight
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Glenn, IL Hourly Weather - Clear - 6:00 AM Glenn, IL Hourly Weather - Clear - 7:00 AM Glenn, IL Hourly Weather - Clear - 8:00 AM Glenn, IL Hourly Weather - Clear - 9:00 AM Glenn, IL Hourly Weather - Clear - 10:00 AM Glenn, IL Hourly Weather - Clear - 11:00 AM Glenn, IL Hourly Weather - Clear - 12:00 PM Glenn, IL Hourly Weather - Clear - 1:00 PM Glenn, IL Hourly Weather - Clear - 2:00 PM Glenn, IL Hourly Weather - Mostly Clear - 3:00 PM Glenn, IL Hourly Weather - Mostly Clear - 4:00 PM Glenn, IL Hourly Weather - Mostly Clear - 5:00 PM Glenn, IL Hourly Weather - Mostly Clear - 6:00 PM Glenn, IL Hourly Weather - Mostly Clear - 7:00 PM Glenn, IL Hourly Weather - Mostly Clear - 8:00 PM Glenn, IL Hourly Weather - Partly Cloudy - 9:00 PM Glenn, IL Hourly Weather - Partly Cloudy - 10:00 PM Glenn, IL Hourly Weather - Partly Cloudy - 11:00 PM Glenn, IL Hourly Weather - Clear - 12:00 AM Glenn, IL Hourly Weather - Clear - 1:00 AM Glenn, IL Hourly Weather - Clear - 2:00 AM Glenn, IL Hourly Weather - Clear - 3:00 AM Glenn, IL Hourly Weather - Clear - 4:00 AM Glenn, IL Hourly Weather - Clear - 5:00 AM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Clear Clear Clear Clear Clear Clear
72°F22°C 72°F22°C 78°F26°C 83°F28°C 89°F32°C 92°F33°C 95°F35°C 98°F37°C 99°F37°C 99°F37°C 100°F38°C 96°F36°C 92°F33°C 88°F31°C 84°F29°C 80°F27°C 76°F24°C 75°F24°C 74°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 71°F22°C
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8% 8% 1% 1% 1% 1% 1% 1% 11% 11% 11% 11% 11% 11% 19% 19% 19% 19% 19% 19% 1% 1% 1% 1%
69°F21°C 69°F21°C 70°F21°C 72°F22°C 73°F23°C 72°F22°C 71°F22°C 70°F21°C 69°F21°C 68°F20°C 67°F19°C 68°F20°C 69°F21°C 70°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 69°F21°C
90% 90% 77% 70% 59% 52% 46% 41% 38% 37% 35% 40% 47% 55% 61% 69% 76% 79% 82% 84% 87% 90% 93% 93%
SSW W W W W W WNW WNW WNW NW NW SSW SW S SSE SE E E NE NE NE NNE NNE NNE
1 mph 1 mph 1 mph 3 mph 3 mph 3 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 3 mph 3 mph 3 mph 2 mph 2 mph 2 mph 1 mph 1 mph 1 mph
.75 mi1 km .5 mi1 km 3 mi5 km 5 mi8 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 5 mi8 km 3 mi5 km 3 mi5 km 5 mi8 km 5 mi8 km 3 mi5 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KMDH model statistics.

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Prob Precip % = Probability of Precipitation.

Glenn 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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