Fallbrook weather in December: Fallbrook, California: normal highs, lows, rain and records for December
Fallbrook in December has a normal high of 67°F and a normal low of 46°F, a daily mean of 57°F, holding near 67°F all month. Measurable precipitation falls on 7 days in a normal December, 2.64 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 8°C, 67 mm of precipitation in December.
- NOAA stationFallbrook (5 mi NE)
- Station IDUSW00053151
- Location33.44°N 117.19°W
- Elevation1,140 ft (348 m)
- From the center5 miles
- Population (census place)32,467
- Jan 68° 47°
- Feb 67° 46°
- Mar 70° 48°
- Apr 72° 51°
- May 75° 53°
- Jun 81° 56°
- Jul 87° 60°
- Aug 89° 62°
- Sep 88° 62°
- Oct 83° 58°
- Nov 74° 52°
- Dec 67° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fallbrook in December?
The normal high is 67°F and the normal low 46°F, for a daily mean of 56.6°F. December is 6.5°F cooler than November and 0.8°F cooler than January. December is the 11th warmest month of the year in Fallbrook and the 3rd wettest. 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 55°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 | 48°F | 19% | 11% |
| December 8 | 67°F | 46°F | 20% | 13% |
| December 15 | 67°F | 46°F | 22% | 14% |
| December 22 | 67°F | 46°F | 21% | 15% |
| December 31 | 68°F | 47°F | 20% | 14% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 14)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 68°F | 48°F | 19% | 11% | 10 h 10 min |
| December 2 | 68°F | 47°F | 19% | 11% | 10 h 10 min |
| December 3 | 68°F | 47°F | 19% | 12% | 10 h 10 min |
| December 4 | 68°F | 47°F | 19% | 12% | 10 h |
| December 5 | 68°F | 47°F | 20% | 12% | 10 h |
| December 6 | 67°F | 47°F | 20% | 12% | 10 h |
| December 7 | 67°F | 46°F | 20% | 12% | 10 h |
| December 8 | 67°F | 46°F | 20% | 13% | 10 h |
| December 9 | 67°F | 46°F | 21% | 13% | 10 h |
| December 10 | 67°F | 46°F | 21% | 13% | 10 h |
| December 11 | 67°F | 46°F | 21% | 13% | 10 h |
| December 12 | 67°F | 46°F | 21% | 14% | 10 h |
| December 13 | 67°F | 46°F | 21% | 14% | 10 h |
| December 14 | 67°F | 46°F | 21% | 14% | 10 h |
| December 15 | 67°F | 46°F | 22% | 14% | 10 h |
| December 16 | 67°F | 46°F | 22% | 14% | 10 h |
| December 17 | 67°F | 46°F | 21% | 14% | 10 h |
| December 18 | 67°F | 46°F | 21% | 14% | 10 h |
| December 19 | 67°F | 46°F | 21% | 14% | 10 h |
| December 20 | 67°F | 46°F | 21% | 15% | 10 h |
| December 21 | 67°F | 46°F | 21% | 15% | 10 h |
| December 22 | 67°F | 46°F | 21% | 15% | 10 h |
| December 23 | 67°F | 46°F | 21% | 15% | 10 h |
| December 24 | 67°F | 46°F | 21% | 15% | 10 h |
| December 25 | 67°F | 46°F | 21% | 15% | 10 h |
| December 26 | 67°F | 46°F | 21% | 15% | 10 h |
| December 27 | 67°F | 46°F | 20% | 15% | 10 h |
| December 28 | 67°F | 46°F | 20% | 15% | 10 h |
| December 29 | 68°F | 46°F | 20% | 15% | 10 h |
| December 30 | 68°F | 47°F | 20% | 15% | 10 h |
| December 31 | 68°F | 47°F | 20% | 14% | 10 h |
- Normal high
- 67°FDecember average
- Normal low
- 46°FDecember average
- Precipitation
- 2.64 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
- 12
- Days at 80°F or more
- 4
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053151; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fallbrook in December?
On a given December day the chance of 0.01 inch or more is 21% on average, highest around December 15 (22%). In all, 2.64 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 USW00053151.
What are the records for December in Fallbrook?
The December mean against the 1991-2020 normal of 56.6°F: 2021 54.5°F (−2.1), 2022 56.1°F (−0.5), 2023 60.5°F (+3.9), 2024 60.5°F (+3.9), 2025 62.5°F (+5.9). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.5°F | −2.1°F | 5.64 in |
| 2022 | 56.1°F | −0.5°F | 2.54 in |
| 2023 | 60.5°F | +3.9°F | 1.06 in |
| 2024 | 60.5°F | +3.9°F | 0.03 in |
| 2025 | 62.5°F | +5.9°F | 1.95 in |
Source: recent months: ACIS, station USW00053151. Records and recent months use complete months only.
How does December in Fallbrook 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; Fallbrook's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Fallbrook in November74°F by day, 52°F at night
- Fallbrook in January68°F by day, 47°F at night
- Fallbrook 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