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United States weather

Weather in Orange County, California for December 2025

Your guide to Orange County weather in December - trends and predictions

    Temperatures

  • Until now, December 2025 in Orange County has been nearly identical to the historical average, with a temperature of 21.2 °F (showing only a slight deviation of 0.1 °F).

  • Expect cooler weather in the next days in Orange County with the forecast suggesting a temperature of 18.8 °F, lower than the historical average.

  • In general, the average temperature in Orange County at the beginning of December is 20.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16 °F by the end of December.

    • Rain 🌧️

  • Orange County experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 34.4 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
24
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/11°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
52 %
Avg humidity

Orange County Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
20°
2
Sunny
19°
3
Sunny
20°
4
Overcast
21°
5
Sunny
23°
6
Sunny
22°
7
Cloudy
21°
8
Sunny
22°
9
Partly cloudy
24°
10
Sunny
25°
11
Overcast
21°
12
Sunny
17°
13
Sunny
19°
14
Overcast
20°
15
Sunny
23°
16
Sunny
22°
17
Fog
20°
18
Sunny
26°
19
Partly cloudy
23°
20
Partly cloudy
20°
21
Cloudy
20°
22
Sunny
22°
23
Patchy rain possible
20°
24
Moderate rain
17°
25
Patchy rain possible
16°
26
Moderate rain
14°
27
Patchy rain possible
15°
28
Patchy rain possible
15°
29
Sunny
16°
30
Sunny
19°
31
Moderate rain at times
17°

Temperatures trend during December in Orange County

See the weather trend as well as the moving average line

December weather in Orange County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Cloudy
Cloudy
 20° /9° 0 mm 5
Dec. 2 Sunny
Sunny
 19° /7° 0 mm 5
Dec. 3 Sunny
Sunny
 20° /9° 0 mm 5
Dec. 4 Overcast
Overcast
 21° /9° 0 mm 5
Dec. 5 Sunny
Sunny
 23° /9° 0 mm 6
Dec. 6 Sunny
Sunny
 22° /10° 0 mm 6
Dec. 7 Cloudy
Cloudy
 21° /9° 0 mm 5
Dec. 8 Sunny
Sunny
 22° /8° 0 mm 6
Dec. 9 Partly cloudy
Partly cloudy
 24° /9° 0 mm 6
Dec. 10 Sunny
Sunny
 25° /9° 0 mm 7
Dec. 11 Overcast
Overcast
 21° /11° 0 mm 5
Dec. 12 Sunny
Sunny
 17° /10° 0 mm 4
Dec. 13 Sunny
Sunny
 19° /9° 0 mm 5
Dec. 14 Overcast
Overcast
 20° /12° 0 mm 5
Dec. 15 Sunny
Sunny
 23° /12° 0 mm 6
Dec. 16 Sunny
Sunny
 22° /11° 0 mm 6
Dec. 17 Fog
Fog
 20° /12° 0 mm 0.6
Dec. 18 Sunny
Sunny
 26° /10° 0 mm 0.6
Dec. 19 Partly cloudy
Partly cloudy
 23° /13° 0 mm 0.6
Dec. 20 Partly cloudy
Partly cloudy
 20° /10° 0 mm 0.6
Dec. 21 Cloudy
Cloudy
 20° /16° 0 mm 0.6
Dec. 22 Sunny
Sunny
 22° /17° 0 mm 0
Dec. 23 Patchy rain possible
Patchy rain possible
 20° /17° 0.9 mm 4
Dec. 24 Moderate rain
Moderate rain
 17° /16° 7 mm 4
Dec. 25 Patchy rain possible
Patchy rain possible
 16° /13° 3.9 mm 4
Dec. 26 Moderate rain
Moderate rain
 14° /12° 6.6 mm 3
Dec. 27 Patchy rain possible
Patchy rain possible
 15° /11° 4 mm 3
Dec. 28 Patchy rain possible
Patchy rain possible
 15° /11° 0 mm 3
Dec. 29 Sunny
Sunny
 16° /11° 0 mm 4
Dec. 30 Sunny
Sunny
 19° /12° 0 mm 5
Dec. 31 Moderate rain at times
Moderate rain at times
 17° /10° 8.1 mm 4
Next
Important Notice
Our weather forecast for Orange County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Orange County forecast closer to your planned date for the most up-to-date weather information.
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Orange County in December - FAQ

What are the expected maximum and minimum temperatures in Orange County during December?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Orange County during December?
In December, Orange County can expect light to moderate rainfall, totaling 34.4 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Orange County during December?
The average wind speed in Orange County during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Orange County

Explore the daily rainfall trends and prepare for Orange Countys December weather 💧
Typically, Orange County has 7 rainy days in December with a total of 34.4 mm of rainfall.

UV exposure in Orange County during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
Top locations in Orange County
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AnaheimChapel HillDisneylandGarden GroveHuntington BeachIrvineNewport BeachOrlandoSanta AnaSeal Beach
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Location coordinates Where is Orange County?

Get accurate weather forecasts for Orange County, located at latitude 33.835 and longitude -117.915. Stay updated with localized weather information tailored for Orange County.

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