ClimateExplore the planning map
Climate · Jenner

Jenner in December

Cool and damp, as the days hold steady.

Typical weather, averaged over 30 years

December in Jenner is cool: highs near 59°F, lows near 47°F. Rain falls on about three days a week, and daylight holds at about 9 hours 31 minutes.December in Jenner is cool: highs near 15°C, lows near 8°C. Rain falls on about three days a week, and daylight holds at about 9 hours 31 minutes.

High
59°F15°Caverage
Low
47°F8°Caverage
Wet days
3a week · 40% of days
Daylight
9h 31mon average

Is December a good time to visit Jenner?

December sits outside Jenner's best months, which run from July to October. Expect cool days and rain on about three days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 59°F in December, against 59°F to 73°F through the year.Highs near 15°C in December, against 15°C to 23°C through the year.

Chance of a wet day

40% of days in December, against 1% to 40% through the year.

Cloud cover

63% cover in December, against 14% to 67% through the year.

Daylight

9h 31m in December, against 9h 31m to 14h 48m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November64°18°low 50°low 10°2 wet days a weekRain on about two days a week.
  2. December59°15°low 47°low 8°3 wet days a weekRain on about three days a week.
  3. January59°15°low 46°low 8°3 wet days a weekRain on about three days a week.

Where Jenner sits, in December

America/Los Angeles
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
7:23 AMsets 4:53 PM
Above the sea
30 mlow-lying
Latitude
38.5°Nnorthern hemisphere
Nearest of ours
Healdsburg36 km east

The land around Jenner, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in United States in December

high · low · wet days
See December on the planning mapThe whole year in Jenner

Typical weather, averaged over 30 years (1995–2024), read 8 km north of Jenner. Its own grid square is mostly sea and holds only a daily average, so the page reads the nearest square with a true high and low near the town's height. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (30 m) against the climate model's (182 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (30 m) against the climate model's (182 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.