What time is sunrise and sunset in Boulder County?
Today and tomorrow's sunrise and sunset times in Boulder County, Colorado. Plus a monthly calendar with dawn, dusk, solar noon, and day length.
Today
Sunrise
6:52 AM
90° EDawn 6:25 AM
Sunrise in Boulder County was at 6:52:07 AM MDT (8 hours ago).
Sunset
6:57 PM
270° WDusk 7:24 PM
Sunset in Boulder County will be at 6:57:23 PM MDT (in 4 hours).
Now
6:52a6:57p
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Daylight now · Golden hour at 6:21 PM
- Daylight
- 12h 05m
- Darkness
- 8h 53m
- Solar noon
- 12:54 PM
- Sun altitude
- 40.7°
- Sun direction
- 222° SW
Tomorrow
Sunrise
6:53 AM
91° EDawn 6:26 AM
Sunrise in Boulder County will be at 6:53:04 AM MDT (in 16 hours).
Sunset
6:55 PM
270° WDusk 7:22 PM
Sunset in Boulder County will be at 6:55:42 PM MDT (in 28 hours).
Moon tonight
Phase, moonrise and moonset in Boulder County
Waxing Gibbous
96% illuminated
- Moonrise
- 5:52 PM
- Moonset
- 4:37 AM
Calendar
America/Denver · click a day to expand
| Date | Dawn | Sunrise | Solar noon | Sunset | Dusk | Length | |
|---|---|---|---|---|---|---|---|
| 1 Tue | 6:02 am | 6:30 am | 1:02 pm | 7:35 pm | 8:03 pm | 13:04:50 | |
| 2 Wed | 6:03 am | 6:31 am | 1:02 pm | 7:33 pm | 8:01 pm | 13:02:18 | |
| 3 Thu | 6:04 am | 6:32 am | 1:02 pm | 7:32 pm | 7:59 pm | 12:59:46 | |
| 4 Fri | 6:05 am | 6:33 am | 1:01 pm | 7:30 pm | 7:58 pm | 12:57:13 | |
| 5 Sat | 6:06 am | 6:34 am | 1:01 pm | 7:28 pm | 7:56 pm | 12:54:40 | |
| 6 Sun | 6:07 am | 6:35 am | 1:01 pm | 7:27 pm | 7:54 pm | 12:52:06 | |
| 7 Mon | 6:08 am | 6:36 am | 1:00 pm | 7:25 pm | 7:53 pm | 12:49:32 | |
| 8 Tue | 6:09 am | 6:37 am | 1:00 pm | 7:24 pm | 7:51 pm | 12:46:58 | |
| 9 Wed | 6:10 am | 6:38 am | 1:00 pm | 7:22 pm | 7:49 pm | 12:44:23 | |
| 10 Thu | 6:11 am | 6:38 am | 12:59 pm | 7:20 pm | 7:48 pm | 12:41:48 | |
| 11 Fri | 6:12 am | 6:39 am | 12:59 pm | 7:19 pm | 7:46 pm | 12:39:12 | |
| 12 Sat | 6:13 am | 6:40 am | 12:59 pm | 7:17 pm | 7:44 pm | 12:36:37 | |
| 13 Sun | 6:14 am | 6:41 am | 12:58 pm | 7:15 pm | 7:43 pm | 12:34:01 | |
| 14 Mon | 6:15 am | 6:42 am | 12:58 pm | 7:14 pm | 7:41 pm | 12:31:25 | |
| 15 Tue | 6:16 am | 6:43 am | 12:58 pm | 7:12 pm | 7:39 pm | 12:28:48 | |
| 16 Wed | 6:17 am | 6:44 am | 12:57 pm | 7:10 pm | 7:37 pm | 12:26:12 | |
| 17 Thu | 6:18 am | 6:45 am | 12:57 pm | 7:09 pm | 7:36 pm | 12:23:35 | |
| 18 Fri | 6:19 am | 6:46 am | 12:56 pm | 7:07 pm | 7:34 pm | 12:20:58 | |
| 19 Sat | 6:20 am | 6:47 am | 12:56 pm | 7:05 pm | 7:32 pm | 12:18:21 | |
| 20 Sun | 6:21 am | 6:48 am | 12:56 pm | 7:04 pm | 7:31 pm | 12:15:44 | |
| 21 Mon | 6:22 am | 6:49 am | 12:55 pm | 7:02 pm | 7:29 pm | 12:13:07 | |
| 22 Tue | 6:23 am | 6:50 am | 12:55 pm | 7:00 pm | 7:27 pm | 12:10:30 | |
| 23 Wed | 6:24 am | 6:51 am | 12:55 pm | 6:59 pm | 7:26 pm | 12:07:53 | |
| 24 Thu | 6:25 am | 6:52 am | 12:54 pm | 6:57 pm | 7:24 pm | 12:05:15 | |
Thursday, September 24 12:05:15 of daylight·−2m 38s vs. yesterday·twilight 6:25 am – 7:24 pm Time 2:56 PM Altitude 40.7° Heading 222° SW Light Daylight 2:56 PM, Daylight, altitude 40.7 degrees | |||||||
| 25 Fri | 6:26 am | 6:53 am | 12:54 pm | 6:55 pm | 7:22 pm | 12:02:38 | |
| 26 Sat | 6:27 am | 6:54 am | 12:54 pm | 6:54 pm | 7:21 pm | 12:00:00 | |
| 27 Sun | 6:27 am | 6:54 am | 12:53 pm | 6:52 pm | 7:19 pm | 11:57:23 | |
| 28 Mon | 6:28 am | 6:55 am | 12:53 pm | 6:50 pm | 7:17 pm | 11:54:46 | |
| 29 Tue | 6:29 am | 6:56 am | 12:52 pm | 6:49 pm | 7:16 pm | 11:52:08 | |
| 30 Wed | 6:30 am | 6:57 am | 12:52 pm | 6:47 pm | 7:14 pm | 11:49:31 | |
FAQ
Frequently asked questions about sunrise and sunset in Boulder County, United States
- What time does the sun rise in Boulder County today?
- Sunrise in Boulder County today (Thursday, September 24, 2026) is at 6:52 AM. The sun comes up in the E.
- What time does the sun set in Boulder County today?
- Sunset today is at 6:57 PM, after 12h 05m of daylight.
- When is the longest day in Boulder County, United States?
- The longest day of 2026 in Boulder County is Sunday, June 21, 2026, the summer solstice, with 15h 01m of daylight. In 2027 the summer solstice falls on June 21, 2027.
- When is the shortest day in Boulder County, United States?
- The shortest day of 2026 in Boulder County, Colorado is Monday, December 21, 2026, the winter solstice, with 9h 18m of daylight. In 2027 the winter solstice lands on December 21, 2027.
- How much more daylight does Boulder County get in summer than in winter?
- Boulder County gets 5h 42m more daylight on its longest day than on its shortest (15h 01m against 9h 18m). Averaged across the year, a day here has 12h 12m of daylight.
- When is the earliest sunrise in Boulder County?
- The earliest sunrise of 2026 in Boulder County is on Sunday, June 14, 2026, when the sun comes up at 5:33 AM.
- When is the latest sunset in Boulder County?
- The latest sunset is on Saturday, June 27, 2026 at 8:35 PM.
- When is the earliest sunset in Boulder County?
- The earliest sunset of the year is on Tuesday, December 8, 2026, with the sun down by 4:37 PM.
- When is the latest sunrise in Boulder County?
- The latest sunrise is on Saturday, October 31, 2026 at 7:30 AM.
- Does Boulder County observe daylight saving time?
- Yes. Boulder County uses Mountain Time: clocks go forward on March 8, 2026, then back on November 1, 2026. Sunrise and sunset times jump by an hour on those dates.
Developers: get this data programmatically with the free JSON API.
GET https://api.sunrisesunset.io/json?lat=40.09246&lng=-105.3577