Calculated sunrise, sunset, golden hour and blue hour times for Longmont, CO. Select a date to view the calculated light times.
The month-by-month table below is in this city's own local time. The live times above follow your device's timezone. Mountains, ridgelines and buildings can shorten the usable window — scout your horizon.
Terrain, buildings and weather can affect visible light. Check the horizon and conditions at the selected location.
In Longmont, sunset ranges from 4:34 PM in December to 8:33 PM in June. Evening golden hour lasts about 41 minutes at the summer solstice and 43 minutes at the winter solstice. Times below are local to Longmont (America/Denver).
| Month | Sunrise | Sunset | Golden hour (evening) | Length | Daylight |
|---|---|---|---|---|---|
| January | 7:20 AM | 4:59 PM | 4:17 PM – 4:59 PM | 42 min | 9h 39m |
| February | 6:53 AM | 5:36 PM | 4:58 PM – 5:36 PM | 38 min | 10h 43m |
| March | 7:11 AM | 7:07 PM | 6:31 PM – 7:07 PM | 36 min | 11h 56m |
| April | 6:22 AM | 7:39 PM | 7:02 PM – 7:39 PM | 37 min | 13h 17m |
| May | 5:44 AM | 8:09 PM | 7:30 PM – 8:09 PM | 39 min | 14h 25m |
| June | 5:30 AM | 8:31 PM | 7:50 PM – 8:31 PM | 41 min | 15h 01m |
| July | 5:43 AM | 8:28 PM | 7:48 PM – 8:28 PM | 40 min | 14h 45m |
| August | 6:11 AM | 7:57 PM | 7:19 PM – 7:57 PM | 38 min | 13h 45m |
| September | 6:41 AM | 7:08 PM | 6:33 PM – 7:08 PM | 35 min | 12h 27m |
| October | 7:11 AM | 6:20 PM | 5:43 PM – 6:20 PM | 37 min | 11h 09m |
| November | 6:46 AM | 4:43 PM | 4:03 PM – 4:43 PM | 40 min | 9h 57m |
| December | 7:15 AM | 4:35 PM | 3:52 PM – 4:35 PM | 43 min | 9h 20m |
Golden hour is the period near sunrise and sunset when the sun is low. Blue hour occurs before sunrise and after sunset. Calculated times vary with location and date; weather, terrain and buildings can affect visible light.
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