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 9 rainy days and a total precipitation of 85.8 mm.
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Temperatures
Rain 🌧️
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22
Dry days
9
Rainy days
0
Snow days
19°/12°
Temperatures
18 km/h
Avg max wind
68 %
Avg humidity
Pasadena Weather December
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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 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Pasadena during December?
Moderate rainfall is anticipated in Pasadena during December, with a total of 85.8 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Pasadena during December?
The average wind speed in Pasadena during December is 18 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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