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
7:38 AM
100° EDawn 7:07 AM
Sunrise in Boulder will be at 7:38:00 AM MDT (in 4h 21m).
Sunset
6:49 PM
259° WDusk 7:19 PM
Sunset in Boulder will be at 6:49:39 PM MDT (in 15h 33m).
Now
7:38a6:49p
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Night now · First light at 5:58 AM
- Daylight
- 11h 11m
- Darkness
- 9h 44m
- Solar noon
- 1:14 PM
- Sun altitude
- 43.6° below
- Sun direction
- 45° NE
Tomorrow
Sunrise
7:39 AM
101° EDawn 7:09 AM
Sunrise in Boulder will be at 7:39:21 AM MDT (in 28h 22m).
Sunset
6:47 PM
259° WDusk 7:18 PM
Sunset in Boulder will be at 6:47:53 PM MDT (in 39h 31m).
Moon tonight
Phase, moonrise and moonset in Boulder
Waxing Crescent
24% illuminated
- Moonrise
- 1:26 PM
- Moonset
- 9:13 PM
Calendar
Mountain Time · select a day to expand
| Date | Dawn | Sunrise | Solar noon | Sunset | Dusk | Length | |
|---|---|---|---|---|---|---|---|
| 1 Thu | 6:49 AM | 7:19 AM | 1:18 PM | 7:15 PM | 7:45 PM | 11h 56m 22s | |
| 2 Fri | 6:50 AM | 7:20 AM | 1:17 PM | 7:13 PM | 7:43 PM | 11h 53m 08s | |
| 3 Sat | 6:52 AM | 7:22 AM | 1:17 PM | 7:11 PM | 7:41 PM | 11h 49m 54s | |
| 4 Sun | 6:53 AM | 7:23 AM | 1:17 PM | 7:10 PM | 7:39 PM | 11h 46m 41s | |
| 5 Mon | 6:54 AM | 7:24 AM | 1:16 PM | 7:08 PM | 7:38 PM | 11h 43m 28s | |
| 6 Tue | 6:56 AM | 7:25 AM | 1:16 PM | 7:06 PM | 7:36 PM | 11h 40m 15s | |
| 7 Wed | 6:57 AM | 7:27 AM | 1:16 PM | 7:04 PM | 7:34 PM | 11h 37m 02s | |
| 8 Thu | 6:58 AM | 7:28 AM | 1:15 PM | 7:02 PM | 7:32 PM | 11h 33m 50s | |
| 9 Fri | 6:59 AM | 7:29 AM | 1:15 PM | 7:00 PM | 7:30 PM | 11h 30m 39s | |
| 10 Sat | 7:01 AM | 7:31 AM | 1:15 PM | 6:58 PM | 7:28 PM | 11h 27m 27s | |
| 11 Sun | 7:02 AM | 7:32 AM | 1:15 PM | 6:56 PM | 7:26 PM | 11h 24m 17s | |
| 12 Mon | 7:03 AM | 7:33 AM | 1:14 PM | 6:55 PM | 7:25 PM | 11h 21m 06s | |
| 13 Tue | 7:05 AM | 7:35 AM | 1:14 PM | 6:53 PM | 7:23 PM | 11h 17m 57s | |
| 14 Wed | 7:06 AM | 7:36 AM | 1:14 PM | 6:51 PM | 7:21 PM | 11h 14m 47s | |
| 15 Thu | 7:07 AM | 7:38 AM | 1:14 PM | 6:49 PM | 7:19 PM | 11h 11m 39s | |
Thursday, October 15 11h 11m 39s of daylight·−3m 8s vs. yesterday·twilight 7:07 AM – 7:19 PM Time 3:17 AM Altitude -43.6° Heading 45° NE Light Night 3:17 AM, Night, altitude -43.6 degrees | |||||||
| 16 Fri | 7:09 AM | 7:39 AM | 1:13 PM | 6:47 PM | 7:18 PM | 11h 08m 31s | |
| 17 Sat | 7:10 AM | 7:40 AM | 1:13 PM | 6:46 PM | 7:16 PM | 11h 05m 23s | |
| 18 Sun | 7:11 AM | 7:42 AM | 1:13 PM | 6:44 PM | 7:14 PM | 11h 02m 17s | |
| 19 Mon | 7:13 AM | 7:43 AM | 1:13 PM | 6:42 PM | 7:12 PM | 10h 59m 11s | |
| 20 Tue | 7:14 AM | 7:44 AM | 1:13 PM | 6:40 PM | 7:11 PM | 10h 56m 05s | |
| 21 Wed | 7:15 AM | 7:46 AM | 1:13 PM | 6:39 PM | 7:09 PM | 10h 53m 01s | |
| 22 Thu | 7:17 AM | 7:47 AM | 1:12 PM | 6:37 PM | 7:08 PM | 10h 49m 57s | |
| 23 Fri | 7:18 AM | 7:48 AM | 1:12 PM | 6:35 PM | 7:06 PM | 10h 46m 55s | |
| 24 Sat | 7:19 AM | 7:50 AM | 1:12 PM | 6:34 PM | 7:04 PM | 10h 43m 53s | |
| 25 Sun | 7:21 AM | 7:51 AM | 1:12 PM | 6:32 PM | 7:03 PM | 10h 40m 52s | |
| 26 Mon | 7:22 AM | 7:53 AM | 1:12 PM | 6:31 PM | 7:01 PM | 10h 37m 53s | |
| 27 Tue | 7:23 AM | 7:54 AM | 1:12 PM | 6:29 PM | 7:00 PM | 10h 34m 54s | |
| 28 Wed | 7:25 AM | 7:55 AM | 1:12 PM | 6:27 PM | 6:58 PM | 10h 31m 57s | |
| 29 Thu | 7:26 AM | 7:57 AM | 1:12 PM | 6:26 PM | 6:57 PM | 10h 29m 00s | |
| 30 Fri | 7:27 AM | 7:58 AM | 1:12 PM | 6:24 PM | 6:55 PM | 10h 26m 05s | |
| 31 Sat | 7:29 AM | 8:00 AM | 1:12 PM | 6:23 PM | 6:54 PM | 10h 23m 12s | |
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, October 15, 2026) is at 7:38 AM. The sun comes up in the E.
- What time does the sun set in Boulder today?
- Sunset today is at 6:49 PM, after 11h 11m of daylight.
- When does it get dark in Boulder tonight?
- Civil twilight ends at 7:19 PM. After that you need artificial light for most things outdoors. Astronomical twilight ends at 8:29 PM, which is when night starts by the standard definition.How long after sunset it gets dark
- 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.More on the summer solstice
- 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 Monday, June 15, 2026, when the sun comes up at 5:36 AM.
- When is the latest sunset in Boulder?
- The latest sunset is on Thursday, June 25, 2026 at 9:24 PM.
- When is the earliest sunset in Boulder?
- The earliest sunset of the year is on Thursday, December 10, 2026, with the sun down by 4:42 PM.Why it comes before the shortest day
- When is the latest sunrise in Boulder?
- The latest sunrise is on Thursday, January 1, 2026 at 8:11 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.
Nearby
Other places close to Boulder
Developers: get this data programmatically with the free JSON API.
GET https://api.sunrisesunset.io/json?lat=46.23659&lng=-112.12083