Current Local Time in City of Boulder, Colorado, USA

10:23:25 am MDT

Sunday, June 22, 2025

Country:	United States
State:	Colorado (CO)
Type:	Third-Order Administrative Division
Lat/Long:	40°02'N / 105°15'W
Currency:	United States Dollar (USD)
Languages:	English

°F

Weather

73 °F

Sunny.
92 / 65 °F

Mon 23.		76 / 51 °F
Tue 24.		79 / 53 °F

More weather details

Time Zone

MDT (Mountain Daylight Time)
UTC/GMT -6 hours

DST started

Mar 9, 2025
Forward 1 hour

DST ends

Nov 2, 2025
Back 1 hour

Difference

2 hours behind
Columbus

About MDT — Mountain Daylight Time

Set your location

Sunrise

5:32 am
↑ 58° Northeast

Sunset

8:33 pm
↑ 302° Northwest

Day length

15 hours, 1 minute
-4s shorter

Moon 10.8%

Rise – 2:42 am
Set – 6:02 pm

More Sun & Moon in City of Boulder
+ Show More Twilight and Moon Phase Information

Solar Noon

Sun in South: 1:03 pm
Altitude: 73.4°

Astronomical
Twilight

3:29 am – 4:17 am
9:48 pm – 10:37 pm

Nautical
Twilight

4:17 am – 4:59 am
9:06 pm – 9:48 pm

Civil
Twilight

4:59 am – 5:32 am
8:33 pm – 9:06 pm

Previous
Moon Phase

Third Quarter
June 18, 2025
1:19 pm

Next
Moon Phase

New Moon
June 25, 2025
4:31 am

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Calendar & Holidays

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Upcoming Holidays

More Holidays in the United States

Airports

Denver International Airport, DEN
About 33 mi ESE of City of Boulder
Colorado Springs Airport, COS
About 89 mi SSE of City of Boulder

Fullscreen Exit

City of Boulder

USA

10:2325am

Sunday, June 22, 2025