Sunrise and sunset times in Niwot, CO
Check out today's and tomorrow's sunrise and sunset times in Niwot, CO, United States, as well as the whole calendar for September 2026.
Today
September 10, 2026 . Current time: 9:20:49 am
First light at 6:09:53 am
Sunrise time: 6:35:52 am
Sunset time: 7:19:14 pm
Last light at 7:45:13 pm
Day length: 12 hours, 43 minutes
9 hours, 58 minutes left for today's sunset in Niwot
Moon rose on Sep 10 at 6:02 AM
Moon will set on Sep 10 at 7:02 PMMoon phase: 🌑 New Moon (0%)🌑 New moon: today at 9:27 PM · 🌕 Full moon: Sep 26 at 10:50 AMTomorrow
September 11, 2026
First light at 6:10:52 am
Sunrise time: 6:36:48 am
Sunset time: 7:17:35 pm
Last light at 7:43:32 pm
Day length: 12 hours, 40 minutes
Tomorrow will be 2 minutes shorter than today in Niwot
Moon will rise on Sep 11 at 7:12 AM Moon will set on Sep 11 at 7:25 PMMoon phase: 🌒 Waxing Crescent (2%)
- Niwot, Colorado
- Latitude: 40.103874 (North)
- Longitude: -105.170822 (West)
- Time zone: Mountain Time MDT
Shortest day in Niwot, CO
The shortest day of the year will be in 4 months, during the winter solstice on December 21, 2026, with a daylight length of 9 hours and 22 minutes.Longest day in Niwot, CO
The longest day of the year was 2 months and 19 days ago, during the summer solstice on June 21, 2026, with a daylight length of 15 hours and 4 minutes.
September 2026 - Niwot, 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 September in Niwot.
The day length shortens by 1 hour, 15 minutes over the course of September 2026 in Niwot, CO - from 13 hours, 6 minutes on the first day to 11 hours, 51 minutes on the last day.
| Day | First Light | Sunrise | Sunset | Last Light | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tue, Sep 1 | 6:00:57 am | 6:27:21 am | 7:33:50 pm | 8:00:13 pm | 13h 6m 29s | -2m -32s | 1:00:35 pm | 58° | 5:27:50 am | 8:33:21 pm | 4:53:18 am | 9:07:52 pm | 10h 54m 28s | 🌖 (82%) |
| Wed, Sep 2 | 6:01:58 am | 6:28:18 am | 7:32:14 pm | 7:58:34 pm | 13h 3m 56s | -2m -33s | 1:00:16 pm | 57.6° | 5:28:56 am | 8:31:36 pm | 4:54:33 am | 9:05:59 pm | 10h 57m 1s | 🌖 (73%) |
| Thu, Sep 3 | 6:02:57 am | 6:29:15 am | 7:30:38 pm | 7:56:55 pm | 13h 1m 23s | -2m -33s | 12:59:56 pm | 57.2° | 5:30:01 am | 8:29:51 pm | 4:55:47 am | 9:04:06 pm | 10h 59m 33s | 🌖 (62%) |
| Fri, Sep 4 | 6:03:57 am | 6:30:11 am | 7:29:02 pm | 7:55:16 pm | 12h 58m 51s | -2m -32s | 12:59:36 pm | 56.9° | 5:31:07 am | 8:28:06 pm | 4:57:01 am | 9:02:12 pm | 11h 2m 6s | 🌗 (51%) |
| Sat, Sep 5 | 6:04:57 am | 6:31:08 am | 7:27:25 pm | 7:53:36 pm | 12h 56m 17s | -2m -34s | 12:59:16 pm | 56.5° | 5:32:12 am | 8:26:21 pm | 4:58:14 am | 9:00:19 pm | 11h 4m 40s | 🌘 (40%) |
| Sun, Sep 6 | 6:05:56 am | 6:32:05 am | 7:25:47 pm | 7:51:56 pm | 12h 53m 42s | -2m -35s | 12:58:56 pm | 56.1° | 5:33:16 am | 8:24:36 pm | 4:59:26 am | 8:58:26 pm | 11h 7m 15s | 🌘 (29%) |
| Mon, Sep 7 | 6:06:56 am | 6:33:02 am | 7:24:09 pm | 7:50:15 pm | 12h 51m 7s | -2m -35s | 12:58:36 pm | 55.7° | 5:34:21 am | 8:22:50 pm | 5:00:38 am | 8:56:33 pm | 11h 9m 49s | 🌘 (19%) |
| Tue, Sep 8 | 6:07:55 am | 6:33:58 am | 7:22:31 pm | 7:48:35 pm | 12h 48m 33s | -2m -34s | 12:58:15 pm | 55.4° | 5:35:25 am | 8:21:05 pm | 5:01:50 am | 8:54:40 pm | 11h 12m 24s | 🌘 (11%) |
| Wed, Sep 9 | 6:08:54 am | 6:34:55 am | 7:20:53 pm | 7:46:54 pm | 12h 45m 58s | -2m -35s | 12:57:54 pm | 55° | 5:36:28 am | 8:19:20 pm | 5:03:00 am | 8:52:47 pm | 11h 14m 59s | 🌘 (5%) |
| Thu, Sep 10 | 6:09:53 am | 6:35:52 am | 7:19:14 pm | 7:45:13 pm | 12h 43m 22s | -2m -36s | 12:57:33 pm | 54.6° | 5:37:32 am | 8:17:34 pm | 5:04:11 am | 8:50:55 pm | 11h 17m 34s | 🌘 (1%) |
| Fri, Sep 11 | 6:10:52 am | 6:36:48 am | 7:17:35 pm | 7:43:32 pm | 12h 40m 47s | -2m -35s | 12:57:12 pm | 54.2° | 5:38:35 am | 8:15:49 pm | 5:05:21 am | 8:49:03 pm | 11h 20m 10s | 🌑 (0%) |
| Sat, Sep 12 | 6:11:51 am | 6:37:45 am | 7:15:56 pm | 7:41:50 pm | 12h 38m 11s | -2m -36s | 12:56:51 pm | 53.8° | 5:39:38 am | 8:14:03 pm | 5:06:30 am | 8:47:11 pm | 11h 22m 46s | 🌒 (2%) |
| Sun, Sep 13 | 6:12:49 am | 6:38:42 am | 7:14:17 pm | 7:40:09 pm | 12h 35m 35s | -2m -36s | 12:56:29 pm | 53.5° | 5:40:41 am | 8:12:18 pm | 5:07:39 am | 8:45:19 pm | 11h 25m 22s | 🌒 (5%) |
| Mon, Sep 14 | 6:13:48 am | 6:39:39 am | 7:12:37 pm | 7:38:28 pm | 12h 32m 58s | -2m -37s | 12:56:08 pm | 53.1° | 5:41:43 am | 8:10:33 pm | 5:08:48 am | 8:43:28 pm | 11h 27m 58s | 🌒 (11%) |
| Tue, Sep 15 | 6:14:47 am | 6:40:35 am | 7:10:58 pm | 7:36:46 pm | 12h 30m 23s | -2m -35s | 12:55:47 pm | 52.7° | 5:42:45 am | 8:08:48 pm | 5:09:56 am | 8:41:37 pm | 11h 30m 34s | 🌒 (18%) |
| Wed, Sep 16 | 6:15:45 am | 6:41:32 am | 7:09:18 pm | 7:35:05 pm | 12h 27m 46s | -2m -37s | 12:55:25 pm | 52.3° | 5:43:47 am | 8:07:03 pm | 5:11:03 am | 8:39:47 pm | 11h 33m 11s | 🌒 (26%) |
| Thu, Sep 17 | 6:16:43 am | 6:42:29 am | 7:07:38 pm | 7:33:24 pm | 12h 25m 9s | -2m -37s | 12:55:04 pm | 51.9° | 5:44:49 am | 8:05:19 pm | 5:12:10 am | 8:37:57 pm | 11h 35m 48s | 🌒 (35%) |
| Fri, Sep 18 | 6:17:42 am | 6:43:26 am | 7:05:58 pm | 7:31:43 pm | 12h 22m 32s | -2m -37s | 12:54:42 pm | 51.5° | 5:45:50 am | 8:03:34 pm | 5:13:17 am | 8:36:07 pm | 11h 38m 25s | 🌓 (44%) |
| Sat, Sep 19 | 6:18:40 am | 6:44:23 am | 7:04:18 pm | 7:30:01 pm | 12h 19m 55s | -2m -37s | 12:54:21 pm | 51.1° | 5:46:51 am | 8:01:50 pm | 5:14:23 am | 8:34:18 pm | 11h 41m 3s | 🌓 (54%) |
| Sun, Sep 20 | 6:19:38 am | 6:45:21 am | 7:02:38 pm | 7:28:20 pm | 12h 17m 17s | -2m -38s | 12:53:59 pm | 50.8° | 5:47:52 am | 8:00:06 pm | 5:15:29 am | 8:32:30 pm | 11h 43m 40s | 🌔 (63%) |
| Mon, Sep 21 | 6:20:37 am | 6:46:18 am | 7:00:58 pm | 7:26:40 pm | 12h 14m 40s | -2m -37s | 12:53:38 pm | 50.4° | 5:48:53 am | 7:58:23 pm | 5:16:35 am | 8:30:42 pm | 11h 46m 17s | 🌔 (72%) |
| Tue, Sep 22 | 6:21:35 am | 6:47:15 am | 6:59:18 pm | 7:24:59 pm | 12h 12m 3s | -2m -37s | 12:53:17 pm | 50° | 5:49:54 am | 7:56:40 pm | 5:17:40 am | 8:28:54 pm | 11h 48m 55s | 🌔 (80%) |
| Wed, Sep 23 | 6:22:33 am | 6:48:13 am | 6:57:39 pm | 7:23:18 pm | 12h 9m 26s | -2m -37s | 12:52:56 pm | 49.6° | 5:50:55 am | 7:54:57 pm | 5:18:45 am | 8:27:07 pm | 11h 51m 32s | 🌔 (87%) |
| Thu, Sep 24 | 6:23:32 am | 6:49:11 am | 6:55:59 pm | 7:21:38 pm | 12h 6m 48s | -2m -38s | 12:52:35 pm | 49.2° | 5:51:55 am | 7:53:15 pm | 5:19:49 am | 8:25:21 pm | 11h 54m 10s | 🌔 (93%) |
| Fri, Sep 25 | 6:24:30 am | 6:50:09 am | 6:54:20 pm | 7:19:58 pm | 12h 4m 11s | -2m -37s | 12:52:14 pm | 48.8° | 5:52:55 am | 7:51:33 pm | 5:20:53 am | 8:23:35 pm | 11h 56m 47s | 🌔 (98%) |
| Sat, Sep 26 | 6:25:28 am | 6:51:07 am | 6:52:40 pm | 7:18:19 pm | 12h 1m 33s | -2m -38s | 12:51:54 pm | 48.4° | 5:53:56 am | 7:49:51 pm | 5:21:57 am | 8:21:50 pm | 11h 59m 25s | 🌕 (100%) |
| Sun, Sep 27 | 6:26:27 am | 6:52:05 am | 6:51:01 pm | 7:16:40 pm | 11h 58m 56s | -2m -37s | 12:51:33 pm | 48° | 5:54:56 am | 7:48:11 pm | 5:23:00 am | 8:20:06 pm | 12h 2m 2s | 🌖 (100%) |
| Mon, Sep 28 | 6:27:25 am | 6:53:03 am | 6:49:23 pm | 7:15:01 pm | 11h 56m 20s | -2m -36s | 12:51:13 pm | 47.6° | 5:55:56 am | 7:46:30 pm | 5:24:04 am | 8:18:22 pm | 12h 4m 39s | 🌖 (97%) |
| Tue, Sep 29 | 6:28:24 am | 6:54:02 am | 6:47:44 pm | 7:13:22 pm | 11h 53m 42s | -2m -38s | 12:50:53 pm | 47.3° | 5:56:56 am | 7:44:50 pm | 5:25:07 am | 8:16:40 pm | 12h 7m 17s | 🌖 (92%) |
| Wed, Sep 30 | 6:29:23 am | 6:55:01 am | 6:46:06 pm | 7:11:44 pm | 11h 51m 5s | -2m -37s | 12:50:33 pm | 46.9° | 5:57:56 am | 7:43:11 pm | 5:26:09 am | 8:14:57 pm | 12h 9m 54s | 🌖 (85%) |
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Sunrise and Sunset photos in Niwot, CO
Enjoy this beautiful gallery of images of the sunset and sunrise at Niwot, CO. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Niwot, CO - 2026
The following graph shows sunrise and sunset times in Niwot, 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 Niwot, CO.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Niwot, CO
In Niwot, CO, the earliest sunrise of 2026 is on June 13 at 5:29 am, while the latest sunrise is on October 31 at 7:27 am. The earliest sunset is on December 7 at 4:36 pm, and the latest sunset is on June 27 at 8:35 pm.
Niwot, CO gets 5h 42m more daylight on the longest day than on the shortest one (15h 04m versus 9h 22m). Averaged over the whole year, a day lasts 12h 15m.
Niwot, CO Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Niwot. Throughout the year, it slowly traces this figure-eight:
Move along the curve to read the Sun's altitude and azimuth for any day of the year in Niwot.
Over the year, the 12:00 Sun swings between just 26.5° above the horizon (around Dec 21) and 73.3° (around Jun 21) in Niwot. The smaller loop sits at the top, the signature of a Northern Hemisphere analemma.
Detailed Analemma Chart
The technical chart below plots one dot per day, labels the first day of each month, marks the solstices, equinoxes, perihelion and aphelion, and draws the noon altitude of the equinoxes (90° minus your latitude) together with its ±23.4° seasonal limits.
Why does the figure look wider here than in the sky view above?
Both draw the same data, but with different conventions. The sky view uses the same scale on both axes, so it shows the analemma with its true proportions, as a camera would capture it: about 47° tall and only a few degrees wide. This chart, like most technical analemma diagrams, stretches each axis independently to fill the plot, expanding the narrow azimuth range several times so its day-to-day variation can actually be read. Also, azimuth is not sky distance: near the zenith, one degree of azimuth spans much less than one degree across the sky, which further widens the figure in this representation.
Places near Niwot, CO
These nearby towns and cities have almost the same sunrise and sunset times as Niwot, CO — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Gunbarrel 3 miLongmont 6 miErie 7 miBoulder 8 miLafayette 9 miLouisville 9 miLyons 10 miSuperior 10 mi