Palo Alto weather in December: Palo Alto, California: normal highs, lows, rain and records for December
Palo Alto in December has a normal high of 58°F and a normal low of 39°F, a daily mean of 48°F, falling from 59°F on the 1st to 57°F by the 31st. Measurable precipitation falls on 10 days in a normal December, 2.95 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 14°C and low of 4°C, 75 mm of precipitation in December.
- NOAA stationPalo Alto
- Station IDUSC00046646
- Location37.44°N 122.14°W
- Elevation25 ft (8 m)
- From the center3 miles
- Population67,658
- Jan 58° 39°
- Feb 61° 41°
- Mar 66° 44°
- Apr 70° 45°
- May 73° 50°
- Jun 79° 53°
- Jul 79° 56°
- Aug 79° 55°
- Sep 80° 53°
- Oct 74° 48°
- Nov 64° 43°
- Dec 58° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Palo Alto in December?
The normal high is 58°F and the normal low 39°F, for a daily mean of 48.1°F. December is 5.0°F cooler than November and 0.3°F cooler than January. December is the 12th warmest month of the year in Palo Alto and the 2nd wettest. Across the month the normal high falls 2°F, from 59°F on December 1 to 57°F on December 31. From one year to the next December's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 46°F and 50°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 59°F | 40°F | 27% | 17% |
| December 8 | 58°F | 39°F | 29% | 19% |
| December 15 | 57°F | 38°F | 31% | 21% |
| December 22 | 57°F | 38°F | 31% | 22% |
| December 31 | 57°F | 38°F | 31% | 22% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 19)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 59°F | 40°F | 27% | 17% | 9 h 50 min |
| December 2 | 59°F | 40°F | 27% | 18% | 9 h 50 min |
| December 3 | 59°F | 40°F | 28% | 18% | 9 h 50 min |
| December 4 | 59°F | 39°F | 28% | 18% | 9 h 40 min |
| December 5 | 59°F | 39°F | 28% | 19% | 9 h 40 min |
| December 6 | 58°F | 39°F | 29% | 19% | 9 h 40 min |
| December 7 | 58°F | 39°F | 29% | 19% | 9 h 40 min |
| December 8 | 58°F | 39°F | 29% | 19% | 9 h 40 min |
| December 9 | 58°F | 39°F | 30% | 20% | 9 h 40 min |
| December 10 | 58°F | 39°F | 30% | 20% | 9 h 40 min |
| December 11 | 58°F | 39°F | 30% | 20% | 9 h 40 min |
| December 12 | 58°F | 39°F | 30% | 21% | 9 h 40 min |
| December 13 | 58°F | 39°F | 31% | 21% | 9 h 40 min |
| December 14 | 57°F | 39°F | 31% | 21% | 9 h 40 min |
| December 15 | 57°F | 38°F | 31% | 21% | 9 h 40 min |
| December 16 | 57°F | 38°F | 31% | 21% | 9 h 40 min |
| December 17 | 57°F | 38°F | 31% | 21% | 9 h 40 min |
| December 18 | 57°F | 38°F | 31% | 21% | 9 h 40 min |
| December 19 | 57°F | 38°F | 31% | 21% | 9 h 30 min |
| December 20 | 57°F | 38°F | 31% | 21% | 9 h 30 min |
| December 21 | 57°F | 38°F | 31% | 22% | 9 h 30 min |
| December 22 | 57°F | 38°F | 31% | 22% | 9 h 30 min |
| December 23 | 57°F | 38°F | 31% | 22% | 9 h 30 min |
| December 24 | 57°F | 38°F | 31% | 22% | 9 h 30 min |
| December 25 | 57°F | 38°F | 31% | 22% | 9 h 30 min |
| December 26 | 57°F | 38°F | 31% | 22% | 9 h 40 min |
| December 27 | 57°F | 38°F | 31% | 22% | 9 h 40 min |
| December 28 | 57°F | 38°F | 31% | 22% | 9 h 40 min |
| December 29 | 57°F | 38°F | 31% | 22% | 9 h 40 min |
| December 30 | 57°F | 38°F | 31% | 22% | 9 h 40 min |
| December 31 | 57°F | 38°F | 31% | 22% | 9 h 40 min |
- Normal high
- 58°FDecember average
- Normal low
- 39°FDecember average
- Precipitation
- 2.95 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 6
- 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 USC00046646; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Palo Alto in December?
On a given December day the chance of 0.01 inch or more is 30% on average, highest around December 30 (31%). In all, 2.95 in falls on 10 days of a normal December, 1 of them with an inch or more.
In a normal December in Palo Alto, 6 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00046646.
What are the records for December in Palo Alto?
The warmest December temperature on this station's record (since 1953) is 75°F, on December 14, 1953; the coldest is 20°F, on December 23, 1990. The wettest December brought 10.56 in (1955).
Source: records: ACIS, station USC00046646. Records and recent months use complete months only.
How does December in Palo Alto 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; Palo Alto's is 58°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Palo Alto in November64°F by day, 43°F at night
- Palo Alto in January58°F by day, 39°F at night
- Palo Alto through the yearEvery month, frost dates, records and recent years
- California in DecemberThe statewide normal and the warmest and coolest places
- Anaheim: California's warmest Decembernormal high 71°F