Santa Ana weather in December: Santa Ana, California: normal highs, lows, rain and records for December
Santa Ana in December has a normal high of 67°F and a normal low of 48°F, a daily mean of 57°F, falling from 68°F on the 1st to 66°F by the 31st. Measurable precipitation falls on 7 days in a normal December, 2.04 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 9°C, 52 mm of precipitation in December.
- NOAA stationSanta Ana John Wayne Airport
- Station IDUSW00093184
- Location33.68°N 117.87°W
- Elevation54 ft (17 m)
- From the center4 miles
- Population316,184
- Jan 67° 49°
- Feb 67° 50°
- Mar 68° 52°
- Apr 70° 55°
- May 71° 59°
- Jun 74° 63°
- Jul 79° 66°
- Aug 80° 67°
- Sep 80° 65°
- Oct 77° 59°
- Nov 72° 53°
- Dec 67° 48°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Santa Ana in December?
The normal high is 67°F and the normal low 48°F, for a daily mean of 57.4°F. December is 5.2°F cooler than November and 0.4°F cooler than January. December is the 12th warmest month of the year in Santa Ana and the 3rd wettest. Across the month the normal high falls 2°F, from 68°F on December 1 to 66°F on December 31. From one year to the next December's mean temperature typically moves about 1.8°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 56°F and 59°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 22%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 68°F | 50°F | 20% | 9% |
| December 8 | 67°F | 49°F | 21% | 10% |
| December 15 | 66°F | 48°F | 22% | 11% |
| December 22 | 66°F | 48°F | 22% | 12% |
| December 31 | 66°F | 48°F | 21% | 12% |
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 | 68°F | 50°F | 20% | 9% | 10 h 10 min |
| December 2 | 68°F | 50°F | 20% | 9% | 10 h |
| December 3 | 68°F | 50°F | 20% | 9% | 10 h |
| December 4 | 68°F | 50°F | 20% | 9% | 10 h |
| December 5 | 67°F | 49°F | 20% | 10% | 10 h |
| December 6 | 67°F | 49°F | 21% | 10% | 10 h |
| December 7 | 67°F | 49°F | 21% | 10% | 10 h |
| December 8 | 67°F | 49°F | 21% | 10% | 10 h |
| December 9 | 67°F | 49°F | 21% | 10% | 10 h |
| December 10 | 67°F | 49°F | 21% | 10% | 10 h |
| December 11 | 67°F | 48°F | 22% | 10% | 10 h |
| December 12 | 66°F | 48°F | 22% | 11% | 10 h |
| December 13 | 66°F | 48°F | 22% | 11% | 10 h |
| December 14 | 66°F | 48°F | 22% | 11% | 10 h |
| December 15 | 66°F | 48°F | 22% | 11% | 10 h |
| December 16 | 66°F | 48°F | 22% | 11% | 10 h |
| December 17 | 66°F | 48°F | 22% | 11% | 10 h |
| December 18 | 66°F | 48°F | 22% | 11% | 10 h |
| December 19 | 66°F | 48°F | 22% | 11% | 10 h |
| December 20 | 66°F | 48°F | 22% | 12% | 9 h 50 min |
| December 21 | 66°F | 48°F | 22% | 12% | 9 h 50 min |
| December 22 | 66°F | 48°F | 22% | 12% | 9 h 50 min |
| December 23 | 66°F | 48°F | 22% | 12% | 9 h 50 min |
| December 24 | 66°F | 48°F | 22% | 12% | 9 h 50 min |
| December 25 | 66°F | 48°F | 22% | 12% | 10 h |
| December 26 | 66°F | 48°F | 22% | 12% | 10 h |
| December 27 | 66°F | 48°F | 22% | 12% | 10 h |
| December 28 | 66°F | 48°F | 21% | 12% | 10 h |
| December 29 | 66°F | 48°F | 21% | 12% | 10 h |
| December 30 | 66°F | 48°F | 21% | 12% | 10 h |
| December 31 | 66°F | 48°F | 21% | 12% | 10 h |
- Normal high
- 67°FDecember average
- Normal low
- 48°FDecember average
- Precipitation
- 2.04 inmonth total
- Days with precipitation
- 70.01 inch or more
- Daylight
- 10 h 10 min to 10 hDecember 1 to December 31
- Days at 70°F or more
- 9
- Days at 80°F or more
- 1
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093184; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Santa Ana in December?
On a given December day the chance of 0.01 inch or more is 21% on average, highest around December 17 (22%). In all, 2.04 in falls on 7 days of a normal December, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093184.
What are the records for December in Santa Ana?
The warmest December temperature on this station's record (since 1999) is 90°F, on December 12, 2010; the coldest is 36°F, on December 28, 2003. The wettest December brought 9.19 in (2010).
The December mean against the 1991-2020 normal of 57.4°F: 2021 57.1°F (−0.3), 2022 58.3°F (+0.9), 2023 61.3°F (+3.9), 2024 58.9°F (+1.5), 2025 61.2°F (+3.8). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.1°F | −0.3°F | 4.79 in |
| 2022 | 58.3°F | +0.9°F | 2.83 in |
| 2023 | 61.3°F | +3.9°F | 1.57 in |
| 2024 | 58.9°F | +1.5°F | 0.00 in |
| 2025 | 61.2°F | +3.8°F | 2.39 in |
Source: records: ACIS, station USW00093184; recent months: ACIS, station USW00093184. Records and recent months use complete months only.
How does December in Santa Ana 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; Santa Ana's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Santa Ana in November72°F by day, 53°F at night
- Santa Ana in January67°F by day, 49°F at night
- Santa Ana 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