Pasadena
December
Weather in Pasadena for December 2025
Your guide to Pasadena weather in December - trends and predictions
In general, the average temperature in Pasadena at the beginning of December is 19.3 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 19.1 °F by the end of December.
Pasadena experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 43.2 mm.
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Temperatures
Rain 🌧️
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25
Dry days
6
Rainy days
0
Snow days
18°/11°
Temperatures
17 km/h
Avg max wind
63 %
Avg humidity
Pasadena in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  21° | 2 20° | 3 20° | 4 21° | 5  21° | 6 17° | |
| 7  15° | 8  20° | 9 26° | 10 18° | 11 17° | 12  18° | 13 17° |
| 14  21° | 15 21° | 16 22° | 17 20° | 18 22° | 19 15° | 20 19° |
| 21 17° | 22  15° | 23 21° | 24 21° | 25 19° | 26 19° | 27 21° |
| 28 20° | 29 16° | 30 18° | 31 21° |
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Temperatures trend during December in Pasadena
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 | Fog | 21° /16° | 2.3 mm | 5 | |
| Dec. 2 | Mist | 20° /12° | 0.7 mm | 5 | |
| Dec. 3 | Fog | 20° /11° | 0 mm | 5 | |
| Dec. 4 | Fog | 21° /11° | 0 mm | 5 | |
| Dec. 5 | Sunny | 21° /12° | 0 mm | 5 | |
| Dec. 6 | Sunny | 17° /8° | 0 mm | 5 | |
| Dec. 7 | Overcast | 15° /9° | 0 mm | 4 | |
| Dec. 8 | Light rain shower | 20° /12° | 0.7 mm | 5 | |
| Dec. 9 | Light rain shower | 26° /16° | 0.5 mm | 6 | |
| Dec. 10 | Overcast | 18° /9° | 0 mm | 4 | |
| Dec. 11 | Sunny | 17° /6° | 0 mm | 5 | |
| Dec. 12 | Partly cloudy | 18° /9° | 0 mm | 5 | |
| Dec. 13 | Overcast | 17° /12° | 0 mm | 4 | |
| Dec. 14 | Cloudy | 21° /15° | 8.8 mm | 5 | |
| Dec. 15 | Patchy rain possible | 21° /16° | 0.6 mm | 5 | |
| Dec. 16 | Patchy rain possible | 22° /15° | 1.2 mm | 5 | |
| Dec. 17 | Sunny | 20° /12° | 0 mm | 5 | |
| Dec. 18 | Sunny | 22° /13° | 0 mm | 6 | |
| Dec. 19 | Cloudy | 15° /10° | 0 mm | 4 | |
| Dec. 20 | Cloudy | 19° /12° | 0 mm | 5 | |
| Dec. 21 | Cloudy | 17° /9° | 0 mm | 5 | |
| Dec. 22 | Moderate rain | 15° /11° | 8.4 mm | 4 | |
| Dec. 23 | Patchy rain possible | 21° /14° | 2 mm | 5 | |
| Dec. 24 | Light rain shower | 21° /17° | 7.2 mm | 5 | |
| Dec. 25 | Overcast | 19° /14° | 30.5 mm | 5 | |
| Dec. 26 | Sunny | 19° /13° | 10 mm | 5 | |
| Dec. 27 | Sunny | 21° /14° | 12.9 mm | 5 | |
| Dec. 28 | Sunny | 20° /13° | 0 mm | 5 | |
| Dec. 29 | Sunny | 16° /10° | 0 mm | 4 | |
| Dec. 30 | Sunny | 18° /10° | 0 mm | 5 | |
| Dec. 31 | Patchy rain possible | 21° /11° | 0.1 mm | 5 | |
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Important Notice
Our weather forecast for Pasadena 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 Pasadena forecast closer to your planned date for the most up-to-date weather information.
Pasadena in December - FAQ
What are the expected maximum and minimum temperatures in Pasadena during December?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Pasadena during December?
In December, Pasadena can expect light to moderate rainfall, totaling 43.2 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Pasadena during December?
The average wind speed in Pasadena during December is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Pasadena
Explore the daily rainfall trends and prepare for Pasadenas December weather 💧
UV exposure in Pasadena during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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