Janesville, WI: shortest day and earliest sunset
The shortest day in Janesville
On Dec 21 the sun rises at 7:23 am and sets at 4:25 pm: 9h 02m of daylight, a moderate winter. The longest day of summer has 15h 20m, so the swing is 6h 17m.
When it gets better in Janesville
- Earliest sunset: 4:22 pm on Dec 8, before the shortest day (here is why).
- Latest sunrise (standard time): 7:26 am on Jan 3.
- Back above 10 hours of daylight: Feb 2.
- By Feb 21 the days grow by 2.8 minutes a day.
Waking and coming home in the dark
With a 7:00 am alarm, the sun is not yet up on 77 weekdays a year. Heading home at 5:30 pm, it has already set on 77. 54 weekdays start and end in the dark. The alarm and lamp guide shows how that compares across the country.
At 42.7°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 Janesville
- A sunrise alarm clock is worth considering if you get up at 7:00 am or earlier: 32 weekday mornings here are still properly dark at that hour, mostly between Oct 7 and Mar 19.
- There is some case for a light therapy lamp: 54 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 2 to Feb 16: worth checking your bike lights and porch light before Nov 2.
Daylight in Janesville, month by month
Sunrise, sunset and day length on the 21st of each month, local clock time. December is the darkest, at 9h 02m.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| July 2026 | 5:37 am | 8:27 pm | 14h 50m |
| August 2026 | 6:09 am | 7:48 pm | 13h 39m |
| September 2026 | 6:42 am | 6:55 pm | 12h 13m |
| October 2026 | 7:17 am | 6:04 pm | 10h 48m |
| November 2026 | 6:55 am | 4:28 pm | 9h 33m |
| December 2026 | 7:23 am | 4:25 pm | 9h 02m |
| January 2027 | 7:20 am | 4:55 pm | 9h 35m |
| February 2027 | 6:44 am | 5:35 pm | 10h 51m |
| March 2027 | 6:58 am | 7:09 pm | 12h 12m |
| April 2027 | 6:05 am | 7:45 pm | 13h 40m |
| May 2027 | 5:28 am | 8:18 pm | 14h 49m |
| June 2027 | 5:18 am | 8:38 pm | 15h 20m |
Janesville against the places around it
On the shortest day, compared with Janesville (9h 02m, sunset 4:25 pm):
- Beloit, WI, 11 mi away: 9h 03m of daylight (+1 min), sunset 4:26 pm (+1 min).
- Whitewater, WI, 18 mi away: 9h 01m of daylight (-1 min), sunset 4:24 pm (-1 min).
- Roscoe, IL, 18 mi away: 9h 04m of daylight (+2 min), sunset 4:26 pm (+1 min).
- Fort Atkinson, WI, 19 mi away: 9h 01m of daylight (-1 min), sunset 4:24 pm (-1 min).
- Stoughton, WI, 20 mi away: 9h 01m of daylight (-1 min), sunset 4:25 pm (0 min).