The highest day temperature in August 2023 was 84°F. The lowest night temperature was 46°F. The average values for day and night temperatures during August were 73.7°F и 55.5°F respectivly.

Most of the days in August are cloudy but you can also expect sunny or gloomy days.

Precipitation total in August for Boulder is 1.9 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 6.2 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Boulder in August is 9.0 hours.