Weather Alert
DeKalb Weather Warning NWS WEATHER ALERT FOR THE DEKALB, IL AREA - Issued: 903 PM CDT Fri Sep 4 2026 DeKalb Weather Warning

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DeKalb, IL Weather - Hour by Hour Forecast

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DeKalb, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 76°F25°C, dew point 75°F24°C, humidity 95%. Wind direction is NNW at 3 mph5 km/h with visibility of 10 mi16 km. Barometric pressure is 29.94 in1013 mb.
Rest of Tonight - Partly cloudy. A slight chance of showers and thunderstorms. Patchy fog late. Near steady temperature in the lower 70s. East winds.. Full Forecast
Saturday - Partly cloudy. Patchy fog early in the morning. Humid with highs in the mid 80s. Northeast winds 5 to 10 mph... Full Forecast

DeKalb Hourly Weather

24 Hour Forecast Scroll
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Midnight
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DeKalb, IL Hourly Weather - Partly Cloudy - 2:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 3:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 4:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 5:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 6:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 7:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 8:00 AM DeKalb, IL Hourly Weather - Cloudy - 9:00 AM DeKalb, IL Hourly Weather - Cloudy - 10:00 AM DeKalb, IL Hourly Weather - Cloudy - 11:00 AM DeKalb, IL Hourly Weather - Mostly Cloudy - 12:00 PM DeKalb, IL Hourly Weather - Mostly Cloudy - 1:00 PM DeKalb, IL Hourly Weather - Mostly Cloudy - 2:00 PM DeKalb, IL Hourly Weather - Partly Cloudy - 3:00 PM DeKalb, IL Hourly Weather - Partly Cloudy - 4:00 PM DeKalb, IL Hourly Weather - Partly Cloudy - 5:00 PM DeKalb, IL Hourly Weather - Clear - 6:00 PM DeKalb, IL Hourly Weather - Clear - 7:00 PM DeKalb, IL Hourly Weather - Clear - 8:00 PM DeKalb, IL Hourly Weather - Clear - 9:00 PM DeKalb, IL Hourly Weather - Clear - 10:00 PM DeKalb, IL Hourly Weather - Clear - 11:00 PM DeKalb, IL Hourly Weather - Clear - 12:00 AM DeKalb, IL Hourly Weather - Clear - 1:00 AM
Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Clear Clear Clear Clear Clear Clear Clear Clear
74°F23°C 74°F23°C 73°F23°C 73°F23°C 72°F22°C 72°F22°C 74°F23°C 76°F24°C 78°F26°C 79°F26°C 81°F27°C 82°F28°C 82°F28°C 81°F27°C 81°F27°C 79°F26°C 77°F25°C 75°F24°C 73°F23°C 71°F22°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C
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74°F23°C 74°F23°C 73°F23°C 73°F23°C 72°F22°C 72°F22°C 73°F23°C 73°F23°C 74°F23°C 73°F23°C 73°F23°C 72°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C 66°F19°C 66°F19°C 65°F18°C
100% 100% 100% 100% 100% 100% 97% 90% 88% 82% 77% 72% 69% 72% 69% 74% 76% 82% 84% 90% 93% 93% 93% 93%
S SSW NW NNW N N SSW SE NE NE NE NE NE NE NE NE NE NE NE NE ENE ENE ENE ENE
3 mph 3 mph 3 mph 3 mph 5 mph 5 mph 5 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 9 mph 9 mph 9 mph 9 mph 9 mph 9 mph 6 mph 6 mph 6 mph 5 mph 5 mph
10 mi16 km 6 mi10 km 6 mi10 km 6 mi10 km 5 mi8 km 5 mi8 km 6 mi10 km 6 mi10 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 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
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POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KDKB model statistics.

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Prob Precip % = Probability of Precipitation.

DeKalb 36 Hour Forecast

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

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