Redwood City weather in December: Redwood City, California: normal highs, lows, rain and records for December
Redwood City in December has a normal high of 59°F and a normal low of 40°F, a daily mean of 49°F, falling from 60°F on the 1st to 58°F by the 31st. Measurable precipitation falls on 9 days in a normal December, 3.92 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 5°C, 100 mm of precipitation in December.
- NOAA stationRedwood City
- Station IDUSC00047339
- Location37.48°N 122.24°W
- Elevation31 ft (9 m)
- From the center3 miles
- Population82,982
- Jan 59° 41°
- Feb 62° 43°
- Mar 65° 45°
- Apr 69° 47°
- May 73° 50°
- Jun 79° 54°
- Jul 81° 57°
- Aug 81° 57°
- Sep 79° 54°
- Oct 75° 50°
- Nov 65° 44°
- Dec 59° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Redwood City in December?
The normal high is 59°F and the normal low 40°F, for a daily mean of 49.4°F. December is 4.9°F cooler than November and 0.3°F cooler than January. December is the 12th warmest month of the year in Redwood City and the wettest. Across the month the normal high falls 2°F, from 60°F on December 1 to 58°F on December 31. From one year to the next December's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 47°F and 51°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 | 60°F | 41°F | 27% | 17% |
| December 8 | 59°F | 41°F | 29% | 18% |
| December 15 | 58°F | 40°F | 29% | 19% |
| December 22 | 58°F | 40°F | 30% | 20% |
| December 31 | 58°F | 40°F | 31% | 21% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 23)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 60°F | 41°F | 27% | 17% | 9 h 50 min |
| December 2 | 60°F | 41°F | 27% | 17% | 9 h 50 min |
| December 3 | 60°F | 41°F | 28% | 17% | 9 h 50 min |
| December 4 | 59°F | 41°F | 28% | 18% | 9 h 40 min |
| December 5 | 59°F | 41°F | 28% | 18% | 9 h 40 min |
| December 6 | 59°F | 41°F | 28% | 18% | 9 h 40 min |
| December 7 | 59°F | 41°F | 29% | 18% | 9 h 40 min |
| December 8 | 59°F | 41°F | 29% | 18% | 9 h 40 min |
| December 9 | 59°F | 41°F | 29% | 19% | 9 h 40 min |
| December 10 | 59°F | 40°F | 29% | 19% | 9 h 40 min |
| December 11 | 59°F | 40°F | 29% | 19% | 9 h 40 min |
| December 12 | 59°F | 40°F | 29% | 19% | 9 h 40 min |
| December 13 | 59°F | 40°F | 29% | 19% | 9 h 40 min |
| December 14 | 58°F | 40°F | 29% | 19% | 9 h 40 min |
| December 15 | 58°F | 40°F | 29% | 19% | 9 h 40 min |
| December 16 | 58°F | 40°F | 29% | 19% | 9 h 40 min |
| December 17 | 58°F | 40°F | 29% | 20% | 9 h 40 min |
| December 18 | 58°F | 40°F | 29% | 20% | 9 h 30 min |
| December 19 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 20 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 21 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 22 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 23 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 24 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 25 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 26 | 58°F | 40°F | 30% | 20% | 9 h 30 min |
| December 27 | 58°F | 40°F | 30% | 20% | 9 h 40 min |
| December 28 | 58°F | 40°F | 30% | 20% | 9 h 40 min |
| December 29 | 58°F | 40°F | 30% | 20% | 9 h 40 min |
| December 30 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| December 31 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
- Normal high
- 59°FDecember average
- Normal low
- 40°FDecember average
- Precipitation
- 3.92 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 3
- 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 USC00047339; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Redwood City in December?
On a given December day the chance of 0.01 inch or more is 29% on average, highest around December 30 (31%). In all, 3.92 in falls on 9 days of a normal December, 1 of them with an inch or more.
In a normal December in Redwood City, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00047339.
What are the records for December in Redwood City?
The warmest December temperature on this station's record (since 1930) is 76°F, on December 12, 1958; the coldest is 18°F, on December 12, 1932. The wettest December brought 14.16 in (1955).
The December mean against the 1991-2020 normal of 49.4°F: 2021 48.7°F (−0.7), 2022 48.6°F (−0.8), 2023 52.8°F (+3.4), 2024 53.8°F (+4.4), 2025 52.6°F (+3.2). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 48.7°F | −0.7°F | 7.69 in |
| 2022 | 48.6°F | −0.8°F | 10.45 in |
| 2023 | 52.8°F | +3.4°F | 3.36 in |
| 2024 | 53.8°F | +4.4°F | 3.56 in |
| 2025 | 52.6°F | +3.2°F | 3.64 in |
Source: records: ACIS, station USC00047339; recent months: ACIS, station USC00047339. Records and recent months use complete months only.
How does December in Redwood City 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; Redwood City's is 59°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Redwood City in November65°F by day, 44°F at night
- Redwood City in January59°F by day, 41°F at night
- Redwood City 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