Weather Alert
Boulder Weather Warning NWS WEATHER ALERT FOR THE BOULDER, IL AREA - Issued: 245 PM CDT Thu Sep 3 2026 Boulder Weather Warning

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Boulder, IL Weather - Hour by Hour Forecast

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Boulder, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 84°F29°C, dew point 72°F22°C, humidity 67%. Wind direction is N/A at N/A mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 29.95 in1014 mb.
Tonight - Mostly clear. Lows in the mid 70s. South winds around 5 mph. Heat index values up to 104 early this evening... Full Forecast
Friday - Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 107... Full Forecast

Boulder Hourly Weather

24 Hour Forecast Scroll
Thu, Sep 03
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Boulder, IL Hourly Weather - Mostly Clear - 8:00 PM Boulder, IL Hourly Weather - Mostly Clear - 9:00 PM Boulder, IL Hourly Weather - Mostly Clear - 10:00 PM Boulder, IL Hourly Weather - Mostly Clear - 11:00 PM Boulder, IL Hourly Weather - Mostly Clear - 12:00 AM Boulder, IL Hourly Weather - Mostly Clear - 1:00 AM Boulder, IL Hourly Weather - Mostly Clear - 2:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 3:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 4:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 5:00 AM Boulder, IL Hourly Weather - Mostly Cloudy - 6:00 AM Boulder, IL Hourly Weather - Mostly Cloudy - 7:00 AM Boulder, IL Hourly Weather - Mostly Cloudy - 8:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 9:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 10:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 11:00 AM Boulder, IL Hourly Weather - Partly Cloudy - 12:00 PM Boulder, IL Hourly Weather - Partly Cloudy - 1:00 PM Boulder, IL Hourly Weather - Partly Cloudy - 2:00 PM Boulder, IL Hourly Weather - Mostly Clear - 3:00 PM Boulder, IL Hourly Weather - Mostly Clear - 4:00 PM Boulder, IL Hourly Weather - Mostly Clear - 5:00 PM Boulder, IL Hourly Weather - Partly Cloudy - 6:00 PM Boulder, IL Hourly Weather - Partly Cloudy - 7:00 PM
Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy
92°F33°C 88°F31°C 85°F29°C 83°F28°C 81°F27°C 79°F26°C 78°F26°C 77°F25°C 76°F24°C 76°F24°C 77°F25°C 77°F25°C 82°F28°C 86°F30°C 91°F33°C 93°F34°C 96°F36°C 98°F37°C 99°F37°C 101°F38°C 102°F39°C 99°F37°C 95°F35°C 92°F33°C
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6% 6% 6% 6% 6% 6% 5% 5% 5% 5% 5% 5% 1% 1% 1% 1% 1% 1% 4% 4% 4% 4% 4% 4%
70°F21°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 71°F22°C 71°F22°C 72°F22°C 71°F22°C 69°F21°C 68°F20°C 67°F19°C 66°F19°C 65°F18°C 67°F19°C 68°F20°C 70°F21°C
49% 57% 63% 67% 72% 77% 79% 79% 82% 82% 79% 79% 69% 61% 54% 49% 42% 38% 36% 32% 30% 36% 42% 49%
SSE S S S S S SSE SSE SW SW SW SW SSW SSW W W W WNW WNW NW NW NW NNW N
2 mph 3 mph 3 mph 3 mph 3 mph 3 mph 3 mph 2 mph 2 mph 2 mph 3 mph 3 mph 3 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 7 mph 7 mph 7 mph 3 mph 3 mph
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 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
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
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Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KSLO model statistics.

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Prob Precip % = Probability of Precipitation.

Boulder 36 Hour Forecast

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

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