Whittier (CA)
December
Weather in Whittier, California for December 2026
Your guide to Whittier weather in December - trends and predictions
In general, the average temperature in Whittier at the beginning of December is 20.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.4 °C by the end of December.
With an average of 4 rainy days, Whittier experiences minimal rainfall in December.
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Temperatures
Rain 🌧️
More
27
Dry days
4
Rainy days
0
Snow days
19°/11°
Temperatures
10 km/h
Avg max wind
60 %
Avg humidity
Whittier Weather December
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Temperatures trend during December in Whittier
See the weather trend as well as the moving average line
December weather in Whittier day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 21° /10° | 0 mm | 6 | |
| Dec. 2 |  Overcast | 18° /10° | 0 mm | 5 | |
| Dec. 3 |  Cloudy | 18° /10° | 0 mm | 4 | |
| Dec. 4 |  Partly cloudy | 19° /10° | 0 mm | 6 | |
| Dec. 5 | Partly cloudy | 20° /10° | 0 mm | 6 | |
| Dec. 6 | Sunny | 22° /10° | 0 mm | 6 | |
| Dec. 7 | Cloudy | 23° /11° | 0 mm | 6 | |
| Dec. 8 | Partly cloudy | 21° /11° | 0 mm | 6 | |
| Dec. 9 | Partly cloudy | 25° /11° | 0 mm | 7 | |
| Dec. 10 | Sunny | 25° /13° | 0 mm | 7 | |
| Dec. 11 | Overcast | 22° /13° | 0 mm | 6 | |
| Dec. 12 | Cloudy | 17° /11° | 0 mm | 4 | |
| Dec. 13 | Sunny | 18° /9° | 0 mm | 5 | |
| Dec. 14 | Overcast | 20° /11° | 0 mm | 5 | |
| Dec. 15 | Sunny | 22° /11° | 0 mm | 6 | |
| Dec. 16 | Overcast | 22° /12° | 0 mm | 6 | |
| Dec. 17 | Sunny | 20° /10° | 0 mm | 6 | |
| Dec. 18 | Sunny | 26° /13° | 0 mm | 7 | |
| Dec. 19 | Overcast | 22° /14° | 0 mm | 5 | |
| Dec. 20 | Cloudy | 20° /11° | 0 mm | 3 | |
| Dec. 21 | Partly cloudy | 18° /11° | 0 mm | 3 | |
| Dec. 22 | Partly cloudy | 19° /11° | 0 mm | 3 | |
| Dec. 23 | Partly cloudy | 16° /12° | 0 mm | 3 | |
| Dec. 24 | Overcast | 15° /12° | 82.6 mm | 2 | |
| Dec. 25 | Sunny | 16° /10° | 6.9 mm | 3 | |
| Dec. 26 | Overcast | 15° /11° | 64.6 mm | 2 | |
| Dec. 27 | Cloudy | 12° /8° | 0 mm | 2 | |
| Dec. 28 | Sunny | 18° /7° | 0 mm | 3 | |
| Dec. 29 | Partly cloudy | 17° /9° | 0 mm | 3 | |
| Dec. 30 | Partly cloudy | 18° /9° | 0 mm | 4 | |
| Dec. 31 | Overcast | 19° /11° | 18.8 mm | 2 | |
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Important Notice
Our weather forecast for Whittier 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 Whittier forecast closer to your planned date for the most up-to-date weather information.
Change Month
Whittier in December - FAQ
What are the expected maximum and minimum temperatures in Whittier during December?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Whittier during December?
Significant rainfall exceeding 172.9 mm is expected in Whittier during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Whittier during December?
The average wind speed in Whittier during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Whittier
Explore the daily rainfall trends and prepare for Whittiers December weather 💧
Typically, Whittier has 4 rainy days in December with a total of 172.9 mm of rainfall.
UV exposure in Whittier during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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