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Longmont, CO, USA — Sunrise, Sunset, and Moon Times for Today

Moon: 89.1%
Waning Gibbous
Current Time: Sep 10, 2025 at 8:35:32 am
Sunrise Today: 6:36 am↑ 83° East
Sunset Today: 7:16 pm↑ 277° West
Moonrise Today: 8:44 pm↑ 68° East
Moonset Today: 10:04 am↑ 288° West
Daylight Hours: 12 hours, 40 minutes (-2m 35s)
Location of Longmont Location

Today's Sun Position in Longmont

Time: 8:35 am
Altitude: 21.7°
Direction: 103° E
Phase: Daylight

Day length today: 12h 39m 49s (Sep 10, 2025)

2 minutes, 35 seconds shorter than yesterday (Sep 9, 2025)

3 hours, 21 minutes longer than winter solstice (Dec 21, 2024)

2 hours, 22 minutes shorter than summer solstice (Jun 20, 2025)

The Sun's altitude in Longmont today. The horizontal line signifies the horizon, the vertical lines show the times of sunrise and sunset. Altitude and heading are displayed below the graph. The graph defaults to current time. Hover over it to select a different time. How to use this

Night, Twilight, and Daylight Times in Longmont Today

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Day, night, and twilight times in Longmont today. Black is nighttime, light blue is daytime. The darker blue shadings represent the twilight phases during dawn (left) and dusk (right). Hover over the graph for more information. How to use this

Night 12:00 am – 5:03 am
Astro. Twilight 5:03 am – 5:37 am
Nautical Twilight 5:37 am – 6:09 am
Civil Twilight 6:09 am – 6:36 am
Daylight 6:36 am – 7:16 pm
Civil Twilight 7:16 pm – 7:44 pm
Nautical Twilight 7:44 pm – 8:16 pm
Astro. Twilight 8:16 pm – 8:49 pm
Night 8:49 pm – 11:59 pm

Sun in Longmont - Next 7 Days

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2025 Sunrise/Sunset Daylength Solar Noon
Sep Sunrise Sunset Length Diff. Time Mil. mi
Sep 10 6:36 am 7:16 pm 12:39:49 −2:35 12:57 pm (54.5°) 93.588
Sep 11 6:37 am 7:15 pm 12:37:13 −2:35 12:56 pm (54.1°) 93.565
Sep 12 6:38 am 7:13 pm 12:34:37 −2:36 12:56 pm (53.7°) 93.541
Sep 13 6:39 am 7:11 pm 12:32:01 −2:36 12:56 pm (53.3°) 93.517
Sep 14 6:40 am 7:10 pm 12:29:24 −2:36 12:55 pm (52.9°) 93.493
Sep 15 6:41 am 7:08 pm 12:26:47 −2:36 12:55 pm (52.5°) 93.468
Sep 16 6:42 am 7:06 pm 12:24:10 −2:36 12:55 pm (52.2°) 93.444
* All times are local time for Longmont. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar.

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Equinoxes & Solstices 2025

March equinox Mar 20 3:01 am
June solstice Jun 20 8:42 pm
September equinox Sep 22 12:19 pm
December solstice Dec 21 8:03 am
* All times are local Longmont time.

Seasons Calculator for Longmont

Sun Articles

Today's Moon in Longmont

Percent Illuminated: 89.1%
Time: 8:35 am
Altitude: 15.1°
Direction: 274° W
Position: Waning Gibbous

The Moon's path in Longmont today. The horizontal line signifies the horizon, the vertical lines show times and headings of moonrise and moonset. The graph defaults to current time. Hover over it to select a different time. How to use this

Year 2025 Moon Phases

Moon in Longmont - Next 7 days

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2025 Moonrise/Moonset Meridian Passing
Sep Moonrise Moonset Moonrise Time Distance (mi) Illumination
Sep 10 - 10:04 am 8:44 pm 3:03 am (61.2°) 226,667 90.7%
Sep 11 - 11:22 am 9:17 pm 3:56 am (67.6°) 226,967 82.5%
Sep 12 - 12:41 pm 9:57 pm 4:53 am (72.8°) 227,970 72.3%
Sep 13 - 1:56 pm 10:47 pm 5:52 am (76.5°) 229,517 60.9%
Sep 14 - 3:03 pm 11:48 pm 6:54 am (78.2°) 231,431 49.0%
Sep 15 - 3:59 pm - 7:56 am (77.8°) 233,562 37.4%
Sep 16 12:56 am 4:44 pm - 8:55 am (75.6°) 235,785 26.7%
* All times are local time for Longmont. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

See full month's Moon

Moon Articles

Planets Visible in the Sky in Longmont This Coming Night

  Planetrise/Planetset, Wed, Sep 10, 2025
Planet Rise Set Meridian Comment
Mercury Wed 6:21 am Wed 7:18 pm Wed 12:50 pm Extremely difficult to see
Venus Wed 4:10 am Wed 6:05 pm Wed 11:08 am Fairly good visibility
Mars Wed 9:29 am Wed 8:36 pm Wed 3:02 pm Average visibility
Jupiter Wed 1:43 am Wed 4:27 pm Wed 9:05 am Fairly good visibility
Saturn Wed 7:46 pm Thu 7:32 am Thu 1:39 am Perfect visibility
Uranus Tue 10:24 pm Wed 12:53 pm Wed 5:38 am Average visibility
Neptune Wed 7:45 pm Thu 7:43 am Thu 1:44 am Slightly difficult to see
* All times are local time for Longmont.

More about the planets visible in the night sky in Longmont

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