Partly Sunny/Partly Cloudy

Today

Partly Sunny

51°

/ 32°

Boulder, Colorado

5 Day Forecast

Weather Forecast Accuracy Last Month (January)

Microsoft

82.26%

AerisWeather

82.26%

The Weather Channel

81.45%

Weatherbit

80.91%

Foreca

80.38%

NWS Digital Forecast

76.34%

Pirate Weather

69.62%

World Weather Online

68.82%

Open-Meteo

68.28%

OpenWeather

61.83%

Persistence

58.33%

Wetter.com

57.80%

Where is AccuWeather?

Weather Forecast Accuracy Last Year (2025)

The Weather Channel

81.88%

Microsoft

81.19%

AerisWeather

79.76%

Foreca

79.17%

Weatherbit

76.74%

NWS Digital Forecast

69.73%

Pirate Weather

67.97%

Open-Meteo

67.33%

World Weather Online

64.95%

OpenWeather

63.94%

Wetter.com

62.76%

Persistence

45.13%

ForecastAdvisor Fact

49.1% of Open-Meteo's low temperature forecasts for Boulder were within 3 degrees of actual temperatures last year.

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