Temecula, CA weather in December
Expect cool, mostly dry weather in Temecula in December, with highs near 65°F and lows near 40°F. Rain falls on about 5 days. It is one of the coolest months in Temecula. Good for outdoor plans.
- Normal high
- 65°F
- Normal low
- 40°F
- Wet days
- 5
- 2.0 in total
- Muggy days
- 0
- dew point 65°F+
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 68°F | 65°F |
| Normal low | 42°F | 41°F |
| Chance of a wet day | 14% | 19% |
| Sunrise / sunset | 6:34 am / 4:40 pm | 6:52 am / 4:50 pm |
| Daylight | 10.1 h | 10.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical December day
- 6 am42°Fdew point 32°F
- 9 am52°Fdew point 34°F
- Noon63°Fdew point 30°F
- 3 pm64°Fdew point 30°F
- 6 pm54°Fdew point 33°F
- 9 pm49°Fdew point 33°F
NOAA hourly normals (local standard time) from March AFB (29 mi away); average wind 5 mph; clear or few clouds in 61% of daytime hours, mostly cloudy or overcast in 31%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow5 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below3 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain in December
Normal precipitation is 2.0 in; a dry December brings about 0.5 in and a wet one about 3.6 in (25th and 75th percentiles). About 1 day brings half an inch or more, and about 1 an inch or more. Snow is very rare.
How December varies from year to year
- Warmest December, 1991-20202017: average high 76°F
- Coolest December1992: average high 61°F
- Wettest December2010: 11.7 in
- Driest December2000: no measurable precipitation
- Highest reading88°F (December 16, 2013)
- Lowest reading25°F (December 18, 2006)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 73°F | 65°F | 66°F |
| Normal low | 46°F | 40°F | 42°F |
| Wet days | 3 | 5 | 6 |
| Comfortable days | 16 | 16 | 18 |
| Daylight | 10.4 h | 10.0 h | 10.2 h |
Highs change by -8°F from November and +1°F into January.
Nearby alternatives in December
- Drier: Palm Springs, CA42 mi · high 69°F · 2 wet days
- Cooler: Big Bear Lake, CA54 mi · high 46°F · 5 wet days
How Temecula ranks in December
- Normal high77th warmest of 378 cities; 27th of 60 in California
- Wet days52nd driest of 378
- Comfortable days24th most of 340
What to pack for Temecula in December
- A warm jacket – lows near 40°F, highs near 65°F
- Layers – afternoons near 65°F but nights near 40°F
Heating and cooling
December has 383 heating degree days and 1 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How cold is Temecula in December?
The normal high is 65°F and the normal low is 40°F. From 1991 to 2020 the coldest December reading was 25°F (most recently on December 18, 2006).
Does it rain a lot in Temecula in December?
About 5 days in December have at least 0.01 in of precipitation, and the normal total is 2.0 in. The wettest December in 1991-2020 was in 2010 (11.7 in); the driest was in 2000, with no measurable precipitation.
Does it snow in Temecula in December?
Snow is very rare: the 1991-2020 normal for December rounds to 0.0 in.
Is December a good time to visit Temecula?
December ranks 6th of 12 months on our comfort score for Temecula (66 out of 100). It has about 16 comfortable days. The best months are March and April.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Elsinore (USC00042805), 18 mi NW of the city center, 1,268 ft (257 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Fallbrook 5 Ne (USW00053151), 4.5 mi SSW of the city center, 1,140 ft (129 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: March AFB (USW00023119), 29 mi NNW of the city center, 1,516 ft (505 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: March Air Reserve Base (722860-23119), 29 mi NNW of the city center, 1,536 ft (525 ft higher than the city). Hourly observations, 1991-2020.