Boulder Weather in May

What's the weather like in Boulder (Colorado) in May 2024?

The climate in Boulder during May can be summarized as mild and reasonably dry.

May is in the spring in Boulder and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 6°C (42°F) is normal.

Boulder weather averages (imperial / metric)
Daytime temperature 20.8°C 69.4°F
Nightly temperature 5.5°C 41.8°F
Average temperature 13.1°C 55.6°F
Daily sunshine 10.1 hrs
Avg rainfall 78 mm 3.1 ins
Rainy days 10 days
Sea temperature 12.6°C 54.6°F
Humidity 51%
Windspeed 17.3kph 11 mph

On average May is the wettest month of the year in Boulder with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.1 hours of sunshine per day.

May temperatures in Boulder

Boulder average temperature in May

May rainfall

Boulder average rain in May

May hourly sunshine

Boulder average rain in May

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Boulder in May 2024.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Boulder weather stats

Boulder weather statistics
Hottest month: July 29.2°C 84.6°F
Driest month: January 17mm 0.7ins
Sunniest month: September 9.6hrs
Coldest month: January 5.5°C 41.9°F
Wettest month: May 78mm 3.1ins
Map showing location of Boulder (40.01499, -105.27055) Boulder map pin © Google

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