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Weather forecast in Boulder, United States

Boulder, current weather: clear, no precipitation is expected for the next 2 hours. Air temperature +22°, feels like +22°. Wind speed - Calm. Pressure 635 millimeters of mercury. Humidity 29%. Daytime water temperature +16°. Sunrise 06:34, Sunset 19:23. This time yesterday +22°

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Boulder, United States: Hourly forecast.

  • 11 am: +22°, clear, Feels like +21°.

  • 12 pm: +23°, mostly clear, Feels like +22°.

  • 1 pm: +28°, partly cloudy, Feels like +27°.

  • 2 pm: +29°, partly cloudy, Feels like +27°.

  • 3 pm: +29°, partly cloudy, Feels like +27°.

  • 4 pm: +29°, partly cloudy, Feels like +26°.

  • 5 pm: +28°, partly cloudy, Feels like +25°.

  • 6 pm: +27°, overcast, Feels like +24°.

  • 7 pm: +24°, mostly clear, Feels like +21°.

  • Sunset 7 September 07:23 pm

  • 8 pm: +22°, mostly clear, Feels like +20°.

  • 9 pm: +20°, mostly clear, Feels like +17°.

  • 10 pm: +20°, clear, Feels like +17°.

  • 11 pm: +19°, clear, Feels like +16°.

  • Sunday, 12 am: +18°, clear, Feels like +15°.

  • 1 am: +17°, partly cloudy, Feels like +13°.

  • 2 am: +16°, partly cloudy, Feels like +12°.

  • 3 am: +16°, mostly clear, Feels like +12°.

  • 4 am: +15°, mostly clear, Feels like +11°.

  • 5 am: +15°, mostly clear, Feels like +11°.

  • 6 am: +14°, clear, Feels like +10°.

  • Sunrise 8 September 06:35 am

  • 7 am: +16°, clear, Feels like +13°.

  • 8 am: +19°, clear, Feels like +16°.

  • 9 am: +23°, mostly clear, Feels like +21°.

  • 10 am: +26°, mostly clear, Feels like +24°.

  • 11 am: +28°, thunderstorm, Feels like +27°.

  • 12 pm: +29°, thunderstorm, Feels like +28°.

  • 1 pm: +30°, thunderstorm, Feels like +27°.

  • 2 pm: +29°, thunderstorm, Feels like +27°.

  • 3 pm: +29°, thunderstorm, Feels like +26°.

  • 4 pm: +29°, partly cloudy, Feels like +25°.

  • 5 pm: +28°, overcast, Feels like +24°.

  • 6 pm: +26°, overcast, Feels like +23°.

  • 7 pm: +24°, overcast, Feels like +21°.

  • Sunset 8 September 07:21 pm

  • 8 pm: +23°, overcast, Feels like +20°.

  • 9 pm: +21°, mostly clear, Feels like +17°.

  • 10 pm: +20°, mostly clear, Feels like +16°.

  • 11 pm: +20°, mostly clear, Feels like +16°.

Air quality forecast

Good

The air quality is good. Enjoy your usual outdoor activities.

  • AQI — 33
  • AQI — 31
  • AQI — 42
  • AQI — 51
  • AQI — 58
  • AQI — 43
  • AQI — 49
  • AQI — 47

Weather forecast for Today, 7 September: in the morning air temperature +18°, feels like +17°, clear, wind speed 2.4 meters per second, westerly, humidity 44%, pressure 630 millimeters of mercury; in the afternoon +28°, feels like +27°, partly cloudy, wind speed 3.7 meters per second, easterly, humidity 25%, pressure 633 millimeters of mercury; in the evening +23°, feels like +20°, partly cloudy, wind speed 3.4 meters per second, westerly, humidity 36%, pressure 634 millimeters of mercury; in the night +17°, feels like +13°, mostly clear, wind speed 3.5 meters per second, westerly, humidity 44%, pressure 629 millimeters of mercury; uv index: 8, very high; magnetic field: quiet; daytime water temperature +16°; sunrise 06:34; sunset 19:23; daylight hours: 12 hr 49 min

Weather forecast for Tomorrow, 8 September: in the morning air temperature +21°, feels like +19°, thunderstorm, wind speed 3.2 meters per second, westerly, humidity 40%, pressure 629 millimeters of mercury; in the afternoon +29°, feels like +26°, thunderstorm, wind speed 4.1 meters per second, easterly, humidity 21%, pressure 631 millimeters of mercury; in the evening +24°, feels like +20°, partly cloudy, wind speed 4.8 meters per second, westerly, humidity 36%, pressure 628 millimeters of mercury; in the night +18°, feels like +13°, partly cloudy, wind speed 5 meters per second, westerly, humidity 41%, pressure 628 millimeters of mercury; uv index: 6, high; magnetic field: quiet; daytime water temperature +17°; sunrise 06:35; sunset 19:21; daylight hours: 12 hr 46 min

Weather forecast for Monday, 9 September: in the morning air temperature +22°, feels like +19°, light rain, wind speed 4 meters per second, westerly, humidity 36%, pressure 629 millimeters of mercury; in the afternoon +29°, feels like +25°, thunderstorm with rain, wind speed 4.9 meters per second, westerly, humidity 25%, pressure 632 millimeters of mercury; in the evening +24°, feels like +20°, overcast, wind speed 5 meters per second, westerly, humidity 40%, pressure 628 millimeters of mercury; in the night +19°, feels like +14°, partly cloudy, wind speed 5.1 meters per second, westerly, humidity 43%, pressure 627 millimeters of mercury; uv index: 3, moderate; magnetic field: quiet; daytime water temperature +19°; sunrise 06:36; sunset 19:20; daylight hours: 12 hr 44 min

Weather forecast for Tuesday, 10 September: in the morning air temperature +21°, feels like +18°, partly cloudy, wind speed 3.5 meters per second, westerly, humidity 40%, pressure 628 millimeters of mercury; in the afternoon +28°, feels like +23°, thunderstorm, wind speed 8.1 meters per second, easterly, humidity 27%, pressure 628 millimeters of mercury; in the evening +23°, feels like +19°, overcast, wind speed 5.5 meters per second, south-westerly, humidity 46%, pressure 625 millimeters of mercury; in the night +17°, feels like +13°, partly cloudy, wind speed 5.1 meters per second, westerly, humidity 54%, pressure 623 millimeters of mercury; uv index: 6, high; daytime water temperature +20°; sunrise 06:37; sunset 19:18; daylight hours: 12 hr 41 min

Weather forecast for Wednesday, 11 September: in the morning air temperature +19°, feels like +15°, overcast, wind speed 5.1 meters per second, westerly, humidity 47%, pressure 623 millimeters of mercury; in the afternoon +26°, feels like +22°, thunderstorm with rain, wind speed 4.8 meters per second, north-westerly, humidity 33%, pressure 622 millimeters of mercury; in the evening +21°, feels like +18°, rain, wind speed 4.5 meters per second, westerly, humidity 52%, pressure 619 millimeters of mercury; in the night +17°, feels like +13°, clear, wind speed 5.9 meters per second, westerly, humidity 58%, pressure 618 millimeters of mercury; uv index: 0, low; daytime water temperature +19°; sunrise 06:38; sunset 19:17; daylight hours: 12 hr 39 min

Weather forecast for Thursday, 12 September: in the morning air temperature +19°, feels like +15°, mostly clear, wind speed 5.6 meters per second, westerly, humidity 51%, pressure 618 millimeters of mercury; in the afternoon +29°, feels like +22°, mostly clear, wind speed 8.3 meters per second, south-westerly, humidity 20%, pressure 617 millimeters of mercury; in the evening +25°, feels like +18°, mostly clear, wind speed 7.8 meters per second, westerly, humidity 26%, pressure 615 millimeters of mercury; in the night +17°, feels like +11°, clear, wind speed 6.5 meters per second, westerly, humidity 39%, pressure 616 millimeters of mercury; daytime water temperature +18°; sunrise 06:39; sunset 19:15; daylight hours: 12 hr 36 min

Weather forecast for Friday, 13 September: in the morning air temperature +16°, feels like +11°, mostly clear, wind speed 5 meters per second, south-westerly, humidity 42%, pressure 621 millimeters of mercury; in the afternoon +27°, feels like +23°, mostly clear, wind speed 5 meters per second, south-westerly, humidity 27%, pressure 622 millimeters of mercury; in the evening +23°, feels like +19°, mostly clear, wind speed 4.8 meters per second, westerly, humidity 35%, pressure 623 millimeters of mercury; in the night +15°, feels like +10°, clear, wind speed 4.9 meters per second, westerly, humidity 43%, pressure 625 millimeters of mercury; daytime water temperature +17°; sunrise 06:40; sunset 19:13; daylight hours: 12 hr 33 min

Weather forecast for Saturday, 14 September: in the morning air temperature +14°, feels like +10°, mostly clear, wind speed 4.3 meters per second, westerly, humidity 48%, pressure 627 millimeters of mercury; in the afternoon +26°, feels like +20°, partly cloudy, wind speed 5.9 meters per second, southerly, humidity 23%, pressure 629 millimeters of mercury; in the evening +22°, feels like +17°, partly cloudy, wind speed 5.3 meters per second, south-westerly, humidity 36%, pressure 627 millimeters of mercury; in the night +14°, feels like +9°, clear, wind speed 5.5 meters per second, westerly, humidity 59%, pressure 627 millimeters of mercury; daytime water temperature +15°; sunrise 06:41; sunset 19:12; daylight hours: 12 hr 31 min

Weather forecast for Sunday, 15 September: in the morning air temperature +15°, feels like +10°, mostly clear, wind speed 5.1 meters per second, westerly, humidity 55%, pressure 629 millimeters of mercury; in the afternoon +28°, feels like +22°, partly cloudy, wind speed 6.1 meters per second, westerly, humidity 22%, pressure 629 millimeters of mercury; in the evening +24°, feels like +19°, mostly clear, wind speed 5.8 meters per second, south-westerly, humidity 35%, pressure 626 millimeters of mercury; in the night +17°, feels like +12°, mostly clear, wind speed 6 meters per second, westerly, humidity 56%, pressure 624 millimeters of mercury; daytime water temperature +15°; sunrise 06:42; sunset 19:10; daylight hours: 12 hr 28 min

Weather forecast for Monday, 16 September: in the morning air temperature +17°, feels like +12°, mostly clear, wind speed 6.6 meters per second, westerly, humidity 52%, pressure 625 millimeters of mercury; in the afternoon +28°, feels like +24°, partly cloudy, wind speed 5.8 meters per second, southerly, humidity 29%, pressure 627 millimeters of mercury; in the evening +21°, feels like +17°, partly cloudy, wind speed 6.3 meters per second, westerly, humidity 52%, pressure 622 millimeters of mercury; in the night +14°, feels like +9°, clear, wind speed 5.6 meters per second, westerly, humidity 62%, pressure 623 millimeters of mercury; daytime water temperature +16°; sunrise 06:43; sunset 19:08; daylight hours: 12 hr 25 min

Weather forecast Boulder, United States for the next month

Get the weather forecast for the next 30 days, including september and october. There's a separate page where you can view the daytime and nighttime air temperature, precipitation, the number of sunny days, air pressure, and humidity.

View the monthly weather forecast

Weather in Boulder — FAQ

What is the weather today in Boulder?

The weather in Boulder today: mostly clear, with an air temperature of +23°.

What will the weather in Boulder be like tomorrow?

The weather in Boulder tomorrow: thunderstorm, with an air temperature of +25°.

What is the usual weather in Boulder in September?

In September, the weather in Boulder is usually partly cloudy, with an average air temperature of +18°.

What is the air pollution level in Boulder right now?

The air pollution level in Boulder is currently low, measuring 35.

What is the coldest month in Boulder?

The coldest month in Boulder is December, with an average air temperature of −1°.

What is the hottest month in Boulder?

The hottest month in Boulder is July, with an average air temperature of +23°.

Discover Boulder's weather update: +22° now, reaching a high of +29° and a low of +13°. Prepare for the day ahead with our reliable forecast, ensuring you're ready for any temperature changes. Whether you're indoors or outdoors, stay in the know about Boulder's weather conditions.

Weather forecast for today: +13⁠…⁠+29⁠° · partly cloudy, no precipitation · light winds at 3 m⁠/⁠s with gusts up to 10 m⁠/⁠s. Weather forecast for tomorrow: +14⁠…⁠+30⁠° · partly cloudy, no precipitation · light winds at 3⁠–⁠5 m⁠/⁠s with gusts up to 13 m⁠/⁠s. Weather forecast for the weekend: +29⁠…⁠+30⁠° · partly cloudy, no precipitation · light winds at 5 m⁠/⁠s with gusts up to 13 m⁠/⁠s

Weather forecast for Today, 7 September: in the morning air temperature +18°, feels like +17°, clear, wind speed 2.4 meters per second, westerly, humidity 44%, pressure 630 millimeters of mercury; in the afternoon +28°, feels like +27°, partly cloudy, wind speed 3.7 meters per second, easterly, humidity 25%, pressure 633 millimeters of mercury; in the evening +23°, feels like +20°, partly cloudy, wind speed 3.4 meters per second, westerly, humidity 36%, pressure 634 millimeters of mercury; in the night +17°, feels like +13°, mostly clear, wind speed 3.5 meters per second, westerly, humidity 44%, pressure 629 millimeters of mercury; uv index: 8, very high; magnetic field: quiet; daytime water temperature +16°; sunrise 06:34; sunset 19:23; daylight hours: 12 hr 49 min

Weather forecast for Tomorrow, 8 September: in the morning air temperature +21°, feels like +19°, thunderstorm, wind speed 3.2 meters per second, westerly, humidity 40%, pressure 629 millimeters of mercury; in the afternoon +29°, feels like +26°, thunderstorm, wind speed 4.1 meters per second, easterly, humidity 21%, pressure 631 millimeters of mercury; in the evening +24°, feels like +20°, partly cloudy, wind speed 4.8 meters per second, westerly, humidity 36%, pressure 628 millimeters of mercury; in the night +18°, feels like +13°, partly cloudy, wind speed 5 meters per second, westerly, humidity 41%, pressure 628 millimeters of mercury; uv index: 6, high; magnetic field: quiet; daytime water temperature +17°; sunrise 06:35; sunset 19:21; daylight hours: 12 hr 46 min