Sierra Vista, AZ: shortest day and earliest sunset
The shortest day in Sierra Vista
On Dec 21 the sun rises at 7:17 am and sets at 5:22 pm: 10h 05m of daylight, a bright winter. The longest day of summer has 14h 13m, so the swing is 4h 07m.
When it gets better in Sierra Vista
- Earliest sunset: 5:18 pm on Dec 3, before the shortest day (here is why).
- Latest sunrise (standard time): 7:22 am on Jan 8.
- Daylight never drops below 10 hours here.
- By Feb 21 the days grow by 1.8 minutes a day.
Waking and coming home in the dark
With a 7:00 am alarm, the sun is not yet up on 59 weekdays a year. Heading home at 5:30 pm, it has already set on 43. 25 weekdays start and end in the dark. The alarm and lamp guide shows how that compares across the country.
At 31.6°N this sits between Sarasota FL (27°N, 1.4%) and Nashua NH (43°N, 9.7%) in a 1990 survey of winter depression by latitude.
What to do about it in Sierra Vista
- You probably do not need a sunrise alarm clock for a 7:00 am start here: only 16 weekday mornings are still properly dark. If you get up earlier, check the hour against the sunrise times in the table below.
- There is some case for a light therapy lamp: 25 weekdays start and end in the dark. If you notice winter low mood, ask a doctor whether one fits you.
- If you head home at 5:30 pm, the sun has already set from Nov 4 to Jan 1: worth checking your bike lights and porch light before Nov 4.
Daylight in Sierra Vista, month by month
Sunrise, sunset and day length on the 21st of each month, local clock time. December is the darkest, at 10h 05m.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| July 2026 | 5:31 am | 7:25 pm | 13h 54m |
| August 2026 | 5:50 am | 6:58 pm | 13h 07m |
| September 2026 | 6:09 am | 6:19 pm | 12h 10m |
| October 2026 | 6:29 am | 5:42 pm | 11h 14m |
| November 2026 | 6:55 am | 5:20 pm | 10h 25m |
| December 2026 | 7:17 am | 5:22 pm | 10h 05m |
| January 2027 | 7:20 am | 5:46 pm | 10h 26m |
| February 2027 | 6:57 am | 6:13 pm | 11h 16m |
| March 2027 | 6:24 am | 6:33 pm | 12h 10m |
| April 2027 | 5:46 am | 6:54 pm | 13h 08m |
| May 2027 | 5:21 am | 7:15 pm | 13h 53m |
| June 2027 | 5:17 am | 7:29 pm | 14h 13m |
Sierra Vista against the places around it
On the shortest day, compared with Sierra Vista (10h 05m, sunset 5:22 pm):
- Nogales, AZ, 39 mi away: 10h 06m of daylight (+1 min), sunset 5:25 pm (+3 min).
- Sahuarita, AZ, 46 mi away: 10h 04m of daylight (-1 min), sunset 5:24 pm (+2 min).
- Douglas, AZ, 47 mi away: 10h 06m of daylight (+1 min), sunset 5:20 pm (-2 min).
- Tucson, AZ, 52 mi away: 10h 03m of daylight (-2 min), sunset 5:23 pm (+1 min).
- Oro Valley, AZ, 71 mi away: 10h 01m of daylight (-4 min), sunset 5:23 pm (+1 min).