What time is sunrise and sunset in Boulder?
Today and tomorrow's sunrise and sunset times in Boulder, Montana. Plus a monthly calendar with dawn, dusk, solar noon, and day length.
Today
Sunrise
7:10 AM
89° EDawn 6:40 AM
Sunrise in Boulder was at 7:10:26 AM MDT (13 hours ago).
Sunset
7:29 PM
271° WDusk 7:59 PM
Sunset in Boulder was at 7:29:31 PM MDT (29 min ago).
Now
7:10a7:29p
12a3a6a9a12p3p6p9p12a
Civil twilight now · Dusk at 7:59 PM
- Daylight
- 12h 19m
- Darkness
- 8h 32m
- Solar noon
- 1:20 PM
- Sun altitude
- 7.0° below
- Sun direction
- 276° W
Tomorrow
Sunrise
7:11 AM
89° EDawn 6:41 AM
Sunrise in Boulder will be at 7:11:43 AM MDT (in 11 hours).
Sunset
7:27 PM
271° WDusk 7:57 PM
Sunset in Boulder will be at 7:27:33 PM MDT (in 23 hours).
Moon tonight
Phase, moonrise and moonset in Boulder
Waxing Gibbous
96% illuminated
- Moonrise
- 6:29 PM
- Moonset
- 4:56 AM
Calendar
America/Denver · click a day to expand
| Date | Dawn | Sunrise | Solar noon | Sunset | Dusk | Length | |
|---|---|---|---|---|---|---|---|
| 1 Tue | 6:09 am | 6:41 am | 1:28 pm | 8:14 pm | 8:45 pm | 13:33:31 | |
| 2 Wed | 6:11 am | 6:42 am | 1:28 pm | 8:12 pm | 8:43 pm | 13:30:20 | |
| 3 Thu | 6:12 am | 6:43 am | 1:27 pm | 8:10 pm | 8:41 pm | 13:27:07 | |
| 4 Fri | 6:13 am | 6:45 am | 1:27 pm | 8:08 pm | 8:39 pm | 13:23:55 | |
| 5 Sat | 6:15 am | 6:46 am | 1:27 pm | 8:06 pm | 8:37 pm | 13:20:42 | |
| 6 Sun | 6:16 am | 6:47 am | 1:26 pm | 8:05 pm | 8:35 pm | 13:17:29 | |
| 7 Mon | 6:18 am | 6:48 am | 1:26 pm | 8:03 pm | 8:33 pm | 13:14:16 | |
| 8 Tue | 6:19 am | 6:50 am | 1:26 pm | 8:01 pm | 8:31 pm | 13:11:02 | |
| 9 Wed | 6:20 am | 6:51 am | 1:25 pm | 7:59 pm | 8:29 pm | 13:07:48 | |
| 10 Thu | 6:22 am | 6:52 am | 1:25 pm | 7:57 pm | 8:27 pm | 13:04:34 | |
| 11 Fri | 6:23 am | 6:53 am | 1:25 pm | 7:55 pm | 8:25 pm | 13:01:20 | |
| 12 Sat | 6:24 am | 6:55 am | 1:24 pm | 7:53 pm | 8:23 pm | 12:58:05 | |
| 13 Sun | 6:26 am | 6:56 am | 1:24 pm | 7:51 pm | 8:21 pm | 12:54:50 | |
| 14 Mon | 6:27 am | 6:57 am | 1:23 pm | 7:49 pm | 8:19 pm | 12:51:35 | |
| 15 Tue | 6:28 am | 6:58 am | 1:23 pm | 7:47 pm | 8:17 pm | 12:48:20 | |
| 16 Wed | 6:29 am | 7:00 am | 1:23 pm | 7:45 pm | 8:15 pm | 12:45:05 | |
| 17 Thu | 6:31 am | 7:01 am | 1:22 pm | 7:43 pm | 8:13 pm | 12:41:50 | |
| 18 Fri | 6:32 am | 7:02 am | 1:22 pm | 7:41 pm | 8:11 pm | 12:38:35 | |
| 19 Sat | 6:33 am | 7:04 am | 1:22 pm | 7:39 pm | 8:09 pm | 12:35:20 | |
| 20 Sun | 6:35 am | 7:05 am | 1:21 pm | 7:37 pm | 8:07 pm | 12:32:05 | |
| 21 Mon | 6:36 am | 7:06 am | 1:21 pm | 7:35 pm | 8:05 pm | 12:28:49 | |
| 22 Tue | 6:37 am | 7:07 am | 1:21 pm | 7:33 pm | 8:03 pm | 12:25:34 | |
| 23 Wed | 6:39 am | 7:09 am | 1:20 pm | 7:31 pm | 8:01 pm | 12:22:19 | |
| 24 Thu | 6:40 am | 7:10 am | 1:20 pm | 7:29 pm | 7:59 pm | 12:19:04 | |
Thursday, September 24 12:19:04 of daylight·−3m 15s vs. yesterday·twilight 6:40 am – 7:59 pm Time 7:59 PM Altitude -7.1° Heading 277° W Light Nautical twilight 7:59 PM, Nautical twilight, altitude -7.1 degrees | |||||||
| 25 Fri | 6:41 am | 7:11 am | 1:20 pm | 7:27 pm | 7:57 pm | 12:15:49 | |
| 26 Sat | 6:43 am | 7:13 am | 1:19 pm | 7:25 pm | 7:55 pm | 12:12:34 | |
| 27 Sun | 6:44 am | 7:14 am | 1:19 pm | 7:23 pm | 7:53 pm | 12:09:19 | |
| 28 Mon | 6:45 am | 7:15 am | 1:19 pm | 7:21 pm | 7:51 pm | 12:06:04 | |
| 29 Tue | 6:46 am | 7:16 am | 1:18 pm | 7:19 pm | 7:49 pm | 12:02:50 | |
| 30 Wed | 6:48 am | 7:18 am | 1:18 pm | 7:17 pm | 7:47 pm | 11:59:36 | |
FAQ
Frequently asked questions about sunrise and sunset in Boulder, United States
- What time does the sun rise in Boulder today?
- Sunrise in Boulder today (Thursday, September 24, 2026) is at 7:10 AM. The sun comes up in the E.
- What time does the sun set in Boulder today?
- Sunset today is at 7:29 PM, after 12h 19m of daylight.
- When is the longest day in Boulder, United States?
- The longest day of 2026 in Boulder is Sunday, June 21, 2026, the summer solstice, with 15h 47m of daylight. In 2027 the summer solstice falls on June 21, 2027.
- When is the shortest day in Boulder, United States?
- The shortest day of 2026 in Boulder, Montana is Monday, December 21, 2026, the winter solstice, with 8h 36m of daylight. In 2027 the winter solstice lands on December 21, 2027.
- How much more daylight does Boulder get in summer than in winter?
- Boulder gets 7h 10m more daylight on its longest day than on its shortest (15h 47m against 8h 36m). Averaged across the year, a day here has 12h 14m of daylight.
- When is the earliest sunrise in Boulder?
- The earliest sunrise of 2026 in Boulder is on Tuesday, June 16, 2026, when the sun comes up at 5:37 AM.
- When is the latest sunset in Boulder?
- The latest sunset is on Friday, June 26, 2026 at 9:25 PM.
- When is the earliest sunset in Boulder?
- The earliest sunset of the year is on Friday, December 11, 2026, with the sun down by 4:43 PM.
- When is the latest sunrise in Boulder?
- The latest sunrise is on Thursday, January 1, 2026 at 8:12 AM.
- Does Boulder observe daylight saving time?
- Yes. Boulder 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=46.23659&lng=-112.12083