Boulder climate

Typical historical weather for Boulder, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Boulder.

Annual average

7.6°C

across all months

Warmest month

27.7°C

Jul average high

Coolest month

-9.6°C

Jan average low

Annual rainfall

687mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

34.1°C

12 July 2024

Coldest day

-26.7°C

22 December 2022

Wettest day

45.9mm

18 May 2017

Windiest day

6.7m/s

6 April 2024