Pacifica weather in December: Pacifica, California: normal highs, lows, rain and records for December
Pacifica in December has a normal high of 59°F and a normal low of 46°F, a daily mean of 53°F, falling from 61°F on the 1st to 58°F by the 31st. Measurable precipitation falls on 11 days in a normal December, 6.64 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 8°C, 169 mm of precipitation in December.
- NOAA stationPacifica (4 mi SSE)
- Station IDUSC00046599
- Location37.59°N 122.47°W
- Elevation475 ft (145 m)
- From the center1 miles
- Population37,056
- Jan 58° 45°
- Feb 60° 46°
- Mar 61° 46°
- Apr 64° 48°
- May 67° 49°
- Jun 69° 51°
- Jul 69° 52°
- Aug 71° 53°
- Sep 72° 53°
- Oct 70° 52°
- Nov 64° 50°
- Dec 59° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Pacifica in December?
The normal high is 59°F and the normal low 46°F, for a daily mean of 52.5°F. December is 4.4°F cooler than November and 0.8°F warmer than January. December is the 11th warmest month of the year in Pacifica and the wettest. Across the month the normal high falls 3°F, from 61°F on December 1 to 58°F on December 31. From one year to the next December's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 51°F and 54°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 61°F | 48°F | 28% | 21% |
| December 8 | 60°F | 47°F | 31% | 24% |
| December 15 | 59°F | 46°F | 33% | 26% |
| December 22 | 58°F | 45°F | 34% | 27% |
| December 31 | 58°F | 45°F | 35% | 27% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 61°F | 48°F | 28% | 21% | 9 h 50 min |
| December 2 | 60°F | 48°F | 28% | 22% | 9 h 50 min |
| December 3 | 60°F | 48°F | 29% | 22% | 9 h 40 min |
| December 4 | 60°F | 48°F | 29% | 23% | 9 h 40 min |
| December 5 | 60°F | 48°F | 30% | 23% | 9 h 40 min |
| December 6 | 60°F | 47°F | 30% | 23% | 9 h 40 min |
| December 7 | 60°F | 47°F | 30% | 24% | 9 h 40 min |
| December 8 | 60°F | 47°F | 31% | 24% | 9 h 40 min |
| December 9 | 59°F | 47°F | 31% | 25% | 9 h 40 min |
| December 10 | 59°F | 47°F | 31% | 25% | 9 h 40 min |
| December 11 | 59°F | 47°F | 32% | 25% | 9 h 40 min |
| December 12 | 59°F | 47°F | 32% | 25% | 9 h 40 min |
| December 13 | 59°F | 46°F | 32% | 26% | 9 h 40 min |
| December 14 | 59°F | 46°F | 32% | 26% | 9 h 40 min |
| December 15 | 59°F | 46°F | 33% | 26% | 9 h 40 min |
| December 16 | 59°F | 46°F | 33% | 26% | 9 h 30 min |
| December 17 | 59°F | 46°F | 33% | 26% | 9 h 30 min |
| December 18 | 58°F | 46°F | 33% | 26% | 9 h 30 min |
| December 19 | 58°F | 46°F | 33% | 26% | 9 h 30 min |
| December 20 | 58°F | 46°F | 33% | 27% | 9 h 30 min |
| December 21 | 58°F | 46°F | 33% | 27% | 9 h 30 min |
| December 22 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 23 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 24 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 25 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 26 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 27 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 28 | 58°F | 45°F | 34% | 27% | 9 h 30 min |
| December 29 | 58°F | 45°F | 34% | 27% | 9 h 40 min |
| December 30 | 58°F | 45°F | 34% | 27% | 9 h 40 min |
| December 31 | 58°F | 45°F | 35% | 27% | 9 h 40 min |
- Normal high
- 59°FDecember average
- Normal low
- 46°FDecember average
- Precipitation
- 6.64 inmonth total
- Days with precipitation
- 110.01 inch or more
- Daylight
- 9 h 50 min to 9 h 40 minDecember 1 to December 31
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00046599; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Pacifica in December?
On a given December day the chance of 0.01 inch or more is 32% on average, highest around December 31 (35%). In all, 6.64 in falls on 11 days of a normal December, 2 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00046599.
How does December in Pacifica compare across California?
Across the 219 places PlainClimate covers in California, December normal highs run from 38°F in Tahoma to 71°F in Anaheim; Pacifica's is 59°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.