Sunrise and sunset times in Boulder, CO
Check out today's and tomorrow's sunrise and sunset times in Boulder, CO, United States, as well as the whole calendar for February 2026.
Today
February 18, 2026 . Current time: 12:07:21 am
First light at 6:21:53 am
Sunrise time: 6:48:02 am
Sunset time: 5:41:49 pm
Last light at 6:07:58 pm
Day length: 10 hours, 53 minutes
17 hours, 34 minutes left for today's sunset in Boulder
Moon will rise on Feb 18 at 07:27 AM
Moon will set on Feb 18 at 07:16 PMMoon phase: 🌒 Waxing Crescent (1%)Tomorrow
February 19, 2026
First light at 6:20:35 am
Sunrise time: 6:46:42 am
Sunset time: 5:42:59 pm
Last light at 6:09:05 pm
Day length: 10 hours, 56 minutes
Tomorrow will be approximately 3 minutes longer than today in Boulder
Moon will rise on Feb 19 at 07:50 AM Moon will set on Feb 19 at 08:26 PMMoon phase: 🌒 Waxing Crescent (9%)
- Boulder, Colorado
- Latitude: 40.014984
- Longitude: -105.270546
- Time zone: Mountain Time MST
Shortest day in Boulder, CO
The shortest day of the year will be in around 10 months, during the winter solstice on December 21, 2026, with a daylight length of 9 hours and 22 minutes.Longest day in Boulder, CO
The longest day of the year will be in around 4 months, during the summer solstice on June 20, 2026, with a daylight length of 15 hours and 4 minutes.
February 2026 - Boulder, Colorado - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of February in Boulder.
The day length increases by 1 hour, 5 minutes over the course of February 2026 in Boulder, CO - from 10 hours, 13 minutes on the first day to 11 hours, 19 minutes on the last day.
| Day | Twilight Start | Sunrise | Sunset | Twilight End | Day Length | Day Length Variation | Solar Noon
Time of day when the sun reaches its highest point in the sky.
|
Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night Length
Calculated form this day's sunset to the next day's sunrise.
|
Moon phase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sun, Feb 1 | 6:40:35 am | 7:07:40 am | 5:21:39 pm | 5:48:45 pm | 10h 13m 59s | 10h 13m 59s | 12:14:40 pm | 23.1° | 6:08:12 am | 6:21:08 pm | 5:36:24 am | 6:52:56 pm | 13h 45m 4s | 🌔 (99%) |
| Mon, Feb 2 | 6:39:41 am | 7:06:43 am | 5:22:51 pm | 5:49:53 pm | 10h 16m 8s | 2m 9s | 12:14:47 pm | 23.4° | 6:07:21 am | 6:22:13 pm | 5:35:35 am | 6:53:59 pm | 13h 42m 53s | 🌖 (100%) |
| Tue, Feb 3 | 6:38:46 am | 7:05:44 am | 5:24:04 pm | 5:51:01 pm | 10h 18m 20s | 2m 12s | 12:14:54 pm | 23.7° | 6:06:29 am | 6:23:18 pm | 5:34:45 am | 6:55:02 pm | 13h 40m 39s | 🌖 (98%) |
| Wed, Feb 4 | 6:37:49 am | 7:04:43 am | 5:25:16 pm | 5:52:10 pm | 10h 20m 33s | 2m 13s | 12:14:59 pm | 24° | 6:05:35 am | 6:24:24 pm | 5:33:53 am | 6:56:05 pm | 13h 38m 24s | 🌖 (93%) |
| Thu, Feb 5 | 6:36:50 am | 7:03:40 am | 5:26:28 pm | 5:53:18 pm | 10h 22m 48s | 2m 15s | 12:15:04 pm | 24.3° | 6:04:39 am | 6:25:29 pm | 5:32:59 am | 6:57:09 pm | 13h 36m 8s | 🌖 (87%) |
| Fri, Feb 6 | 6:35:50 am | 7:02:36 am | 5:27:40 pm | 5:54:26 pm | 10h 25m 4s | 2m 16s | 12:15:08 pm | 24.6° | 6:03:42 am | 6:26:34 pm | 5:32:04 am | 6:58:12 pm | 13h 33m 51s | 🌖 (79%) |
| Sat, Feb 7 | 6:34:48 am | 7:01:31 am | 5:28:51 pm | 5:55:35 pm | 10h 27m 20s | 2m 16s | 12:15:11 pm | 24.9° | 6:02:43 am | 6:27:39 pm | 5:31:07 am | 6:59:16 pm | 13h 31m 33s | 🌖 (71%) |
| Sun, Feb 8 | 6:33:44 am | 7:00:24 am | 5:30:03 pm | 5:56:43 pm | 10h 29m 39s | 2m 19s | 12:15:14 pm | 25.2° | 6:01:43 am | 6:28:44 pm | 5:30:08 am | 7:00:19 pm | 13h 29m 13s | 🌖 (62%) |
| Mon, Feb 9 | 6:32:39 am | 6:59:16 am | 5:31:15 pm | 5:57:51 pm | 10h 31m 59s | 2m 20s | 12:15:15 pm | 25.5° | 6:00:41 am | 6:29:50 pm | 5:29:08 am | 7:01:23 pm | 13h 26m 51s | 🌗 (52%) |
| Tue, Feb 10 | 6:31:33 am | 6:58:06 am | 5:32:26 pm | 5:58:59 pm | 10h 34m 20s | 2m 21s | 12:15:16 pm | 25.9° | 5:59:37 am | 6:30:55 pm | 5:28:06 am | 7:02:26 pm | 13h 24m 29s | 🌘 (43%) |
| Wed, Feb 11 | 6:30:25 am | 6:56:55 am | 5:33:37 pm | 6:00:07 pm | 10h 36m 42s | 2m 22s | 12:15:16 pm | 26.2° | 5:58:32 am | 6:32:00 pm | 5:27:02 am | 7:03:30 pm | 13h 22m 6s | 🌘 (34%) |
| Thu, Feb 12 | 6:29:16 am | 6:55:43 am | 5:34:48 pm | 6:01:15 pm | 10h 39m 5s | 2m 23s | 12:15:15 pm | 26.5° | 5:57:25 am | 6:33:05 pm | 5:25:57 am | 7:04:34 pm | 13h 19m 41s | 🌘 (25%) |
| Fri, Feb 13 | 6:28:05 am | 6:54:29 am | 5:35:59 pm | 6:02:22 pm | 10h 41m 30s | 2m 25s | 12:15:14 pm | 26.9° | 5:56:18 am | 6:34:10 pm | 5:24:50 am | 7:05:38 pm | 13h 17m 15s | 🌘 (17%) |
| Sat, Feb 14 | 6:26:54 am | 6:53:14 am | 5:37:10 pm | 6:03:30 pm | 10h 43m 56s | 2m 26s | 12:15:12 pm | 27.2° | 5:55:08 am | 6:35:15 pm | 5:23:42 am | 7:06:41 pm | 13h 14m 48s | 🌘 (11%) |
| Sun, Feb 15 | 6:25:40 am | 6:51:58 am | 5:38:20 pm | 6:04:37 pm | 10h 46m 22s | 2m 26s | 12:15:09 pm | 27.5° | 5:53:57 am | 6:36:20 pm | 5:22:32 am | 7:07:45 pm | 13h 12m 20s | 🌘 (5%) |
| Mon, Feb 16 | 6:24:26 am | 6:50:40 am | 5:39:30 pm | 6:05:44 pm | 10h 48m 50s | 2m 28s | 12:15:05 pm | 27.9° | 5:52:45 am | 6:37:25 pm | 5:21:21 am | 7:08:49 pm | 13h 9m 52s | 🌘 (2%) |
| Tue, Feb 17 | 6:23:10 am | 6:49:22 am | 5:40:40 pm | 6:06:51 pm | 10h 51m 18s | 2m 28s | 12:15:01 pm | 28.2° | 5:51:32 am | 6:38:30 pm | 5:20:08 am | 7:09:53 pm | 13h 7m 22s | 🌑 (0%) |
| Wed, Feb 18 | 6:21:53 am | 6:48:02 am | 5:41:49 pm | 6:07:58 pm | 10h 53m 47s | 2m 29s | 12:14:56 pm | 28.6° | 5:50:17 am | 6:39:35 pm | 5:18:54 am | 7:10:57 pm | 13h 4m 53s | 🌒 (1%) |
| Thu, Feb 19 | 6:20:35 am | 6:46:42 am | 5:42:59 pm | 6:09:05 pm | 10h 56m 17s | 2m 30s | 12:14:50 pm | 29° | 5:49:01 am | 6:40:40 pm | 5:17:39 am | 7:12:01 pm | 13h 2m 21s | 🌒 (4%) |
| Fri, Feb 20 | 6:19:16 am | 6:45:20 am | 5:44:08 pm | 6:10:11 pm | 10h 58m 48s | 2m 31s | 12:14:44 pm | 29.3° | 5:47:43 am | 6:41:44 pm | 5:16:22 am | 7:13:06 pm | 12h 59m 49s | 🌒 (9%) |
| Sat, Feb 21 | 6:17:56 am | 6:43:57 am | 5:45:16 pm | 6:11:18 pm | 11h 1m 19s | 2m 31s | 12:14:37 pm | 29.7° | 5:46:25 am | 6:42:49 pm | 5:15:04 am | 7:14:10 pm | 12h 57m 18s | 🌒 (16%) |
| Sun, Feb 22 | 6:16:35 am | 6:42:34 am | 5:46:25 pm | 6:12:24 pm | 11h 3m 51s | 2m 32s | 12:14:29 pm | 30° | 5:45:05 am | 6:43:53 pm | 5:13:44 am | 7:15:14 pm | 12h 54m 44s | 🌒 (26%) |
| Mon, Feb 23 | 6:15:12 am | 6:41:09 am | 5:47:33 pm | 6:13:29 pm | 11h 6m 24s | 2m 33s | 12:14:21 pm | 30.4° | 5:43:44 am | 6:44:58 pm | 5:12:24 am | 7:16:18 pm | 12h 52m 11s | 🌒 (36%) |
| Tue, Feb 24 | 6:13:49 am | 6:39:44 am | 5:48:41 pm | 6:14:35 pm | 11h 8m 57s | 2m 33s | 12:14:12 pm | 30.8° | 5:42:22 am | 6:46:02 pm | 5:11:01 am | 7:17:23 pm | 12h 49m 36s | 🌓 (47%) |
| Wed, Feb 25 | 6:12:25 am | 6:38:17 am | 5:49:48 pm | 6:15:41 pm | 11h 11m 31s | 2m 34s | 12:14:03 pm | 31.1° | 5:40:59 am | 6:47:06 pm | 5:09:38 am | 7:18:27 pm | 12h 47m 2s | 🌔 (59%) |
| Thu, Feb 26 | 6:10:59 am | 6:36:50 am | 5:50:55 pm | 6:16:46 pm | 11h 14m 5s | 2m 34s | 12:13:53 pm | 31.5° | 5:39:35 am | 6:48:10 pm | 5:08:14 am | 7:19:32 pm | 12h 44m 27s | 🌔 (70%) |
| Fri, Feb 27 | 6:09:33 am | 6:35:22 am | 5:52:02 pm | 6:17:51 pm | 11h 16m 40s | 2m 35s | 12:13:42 pm | 31.9° | 5:38:10 am | 6:49:14 pm | 5:06:48 am | 7:20:36 pm | 12h 41m 51s | 🌔 (80%) |
| Sat, Feb 28 | 6:08:06 am | 6:33:53 am | 5:53:09 pm | 6:18:56 pm | 11h 19m 16s | 2m 36s | 12:13:31 pm | 32.3° | 5:36:43 am | 6:50:18 pm | 5:05:21 am | 7:21:41 pm | 12h 39m 15s | 🌔 (88%) |
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Sunrise and Sunset photos in Boulder, CO
Enjoy this beautiful gallery of images of the sunset and sunrise at Boulder, CO. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Boulder, CO - 2026
The followin graph shows sunrise and sunset times in Boulder, CO for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Boulder, CO.