Boulder, CO Weather

    11:00 Saturday
    Scattered clouds
    Scattered clouds
    31° Feels like 30°
    Radiación ultravioleta UV 7 High
    SPF 15-25
    reloj Hourly Thunderstorm expected in the next few hours
    • Today 29 Aug. Thunderstorm with partly cloudy skies 90% 2.1 mm 34° / 18° Moderate northwest wind 12 - 33 km/h
    • Tomorrow 30 Aug. Dry thunderstorm with partly cloudy skies More information 32° / 14° Moderate west wind 17 - 46 km/h
    • Monday 31 Aug. Thunderstorm with partly cloudy skies 80% 1.7 mm 29° / 15° Moderate southeast wind 13 - 35 km/h
    • Tuesday 1 Sept. Thunderstorm with partly cloudy skies 70% 0.7 mm 30° / 14° Moderate southeast wind 12 - 34 km/h
    • Wednesday 2 Sept. Light rain with partly cloudy skies 60% 0.6 mm 32° / 12° Moderate southwest wind 13 - 35 km/h
    • Thursday 3 Sept. Light rain with partly cloudy skies 50% 0.5 mm 31° / 15° Moderate east wind 10 - 39 km/h
    • Friday 4 Sept. Light rain with partly cloudy skies 50% 0.3 mm 35° / 14° Moderate west wind 10 - 41 km/h

    Weather Forecast for Boulder, CO Today

    , 29 August

    Tomorrow

    , 30 August
    12:00 Scattered clouds 31° Scattered clouds
    Feels Like 30°
    Moderate southeast wind Southeast 5 - 22 km/h
    		UV Index 7 High SPF: 15-25
    • Rain Rain 0% 0 mm
    • Humidity Humidity 20%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 49%
    • Feels Like Feels Like 30 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1011 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 17060 ft
    13:00 Scattered clouds 33° Scattered clouds
    Feels Like 30°
    Moderate southeast wind Southeast 5 - 23 km/h
    		UV Index 8 Very High! SPF: 25-50
    • Rain Rain 0% 0 mm
    • Humidity Humidity 18%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 40%
    • Feels Like Feels Like 30 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1010 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 23 km/h
    • Snowline Snowline 16404 ft
    14:00 Partly cloudy 33° Partly cloudy
    Feels Like 31°
    Moderate southeast wind Southeast 11 - 31 km/h
    		UV Index 7 High SPF: 15-25
    • Rain Rain 10% 0 mm
    • Humidity Humidity 18%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 83%
    • Feels Like Feels Like 31 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1008 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Snowline Snowline 16076 ft
    15:00 Thunderstorm with partly cloudy skies 60% 0.031 mm 30° Thunderstorm
    Feels Like 29°
    Moderate northwest wind Northwest 3 - 31 km/h
    		UV Index 6 High SPF: 15-25
    • Rain Rain 60% 0.031 mm
    • Humidity Humidity 31%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 64%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 7 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1009 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Snowline Snowline 16404 ft
    16:00 Light rain with partly cloudy skies 70% 0.008 mm 31° Light rain
    Feels Like 29°
    Moderate east wind East 4 - 29 km/h
    		UV Index 4 Moderate SPF: 6-10
    • Rain Rain 70% 0.008 mm
    • Humidity Humidity 25%
    • Dew Point Dew Point 9 °C
    • Clouds Clouds 46%
    • Feels Like Feels Like 29 °C
    • Visibility Visibility 18 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1008 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Snowline Snowline 16404 ft
    17:00 Thunderstorm with partly cloudy skies 40% 0.016 mm 29° Thunderstorm
    Feels Like 28°
    Moderate southeast wind Southeast 9 - 29 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 40% 0.016 mm
    • Humidity Humidity 34%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 71%
    • Feels Like Feels Like 28 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1009 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Snowline Snowline 16404 ft
    18:00 Thunderstorm with partly cloudy skies 50% 0.024 mm 25° Thunderstorm
    Feels Like 26°
    Moderate northwest wind Northwest 12 - 32 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 50% 0.024 mm
    • Humidity Humidity 56%
    • Dew Point Dew Point 15 °C
    • Clouds Clouds 56%
    • Feels Like Feels Like 26 °C
    • Visibility Visibility 20 km
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1011 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 32 km/h
    • Snowline Snowline 16404 ft
    19:00 Light rain with partly cloudy skies 50% 0.004 mm 23° Light rain
    Feels Like 25°
    Moderate southwest wind Southwest 6 - 32 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 50% 0.004 mm
    • Humidity Humidity 62%
    • Dew Point Dew Point 15 °C
    • Clouds Clouds 51%
    • Feels Like Feels Like 25 °C
    • Visibility Visibility 12 km
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1013 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 32 km/h
    • Snowline Snowline 16404 ft
    Partly cloudy 20:00 Partly cloudy 21° Partly cloudy
    Feels Like 21°
    Gentle south wind South 3 - 19 km/h
    		UV Index 0 Low SPF: no
    20:00 Light rain with partly cloudy skies 50% 0.1 mm 21° Light rain
    Feels Like 21°
    Gentle south wind South 3 - 19 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 20% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point 15 °C
    • Clouds Clouds 56%
    • Feels Like Feels Like 21 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1013 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Snowline Snowline 16404 ft
    21:00 Scattered clouds 20° Scattered clouds
    Feels Like 20°
    Gentle southwest wind Southwest 7 - 18 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 71%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 54%
    • Feels Like Feels Like 20 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1014 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 18 km/h
    • Snowline Snowline 16404 ft
    22:00 Scattered clouds 19° Scattered clouds
    Feels Like 19°
    Moderate southwest wind Southwest 10 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 73%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 48%
    • Feels Like Feels Like 19 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1014 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 16404 ft
    Scattered clouds 23:00 Scattered clouds 18° Scattered clouds
    Feels Like 18°
    Moderate southwest wind Southwest 11 - 25 km/h
    		UV Index 0 Low SPF: no
    23:00 Scattered clouds 18° Scattered clouds
    Feels Like 18°
    Moderate southwest wind Southwest 11 - 25 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 72%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 35%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1013 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 25 km/h
    • Snowline Snowline 16404 ft
    24:00 Scattered clouds 18° Scattered clouds
    Feels Like 18°
    Moderate southwest wind Southwest 10 - 24 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point 12 °C
    • Clouds Clouds 46%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1012 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Snowline Snowline 16732 ft

    Air quality in Boulder today

    Detail
    45
    Moderate O₃ (115 µg/m³)

    Sunrise and Sunset

    Sunrise 06:26 Sunset 19:37
    First light 05:58 Midday 13:01 Last light 20:04
    Day length 13h 11m

    Remaining daylight 8h 4m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    29 Full Moon
    30 Last Quarter
    31 Last Quarter
    1 Last Quarter
    2 Last Quarter
    3 Last Quarter
    4 Last Quarter
    5 Last Quarter
    6 Last Quarter
    7 Last Quarter
    8 Last Quarter
    9 New Moon
    10 New Moon
    11 New Moon

    What is the weather like in Boulder, CO in August?

    • Avg. Temp.
      Avg. Temp.: 18 °C Max.: 26 °C Min: 11 °C
    • Rainy Days
      Rainy Days: 16 days
    • Accumulated Rainfall
      Accumulated Rainfall: 75 mm
    • Average Wind Speed
      Average Wind Speed: 7 km/h

    Weather graphs

    Videos

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