Lancaster (CA)
December
Weather in Lancaster, California for December 2025
Your guide to Lancaster weather in December - trends and predictions
In general, the average temperature in Lancaster at the beginning of December is 17.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.6 °F by the end of December.
With an average of 5 rainy days, Lancaster experiences minimal rainfall in December.
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Temperatures
Rain 🌧️
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26
Dry days
5
Rainy days
0
Snow days
15°/3°
Temperatures
19 km/h
Avg max wind
50 %
Avg humidity
Lancaster Weather December
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Temperatures trend during December in Lancaster
See the weather trend as well as the moving average line
December weather in Lancaster day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Cloudy | 16° /2° | 0 mm | 5 | |
| Dec. 2 | Cloudy | 17° /1° | 0 mm | 4 | |
| Dec. 3 |  Mist | 16° /3° | 0 mm | 4 | |
| Dec. 4 |  Overcast | 19° /4° | 0 mm | 5 | |
| Dec. 5 |  Sunny | 20° /4° | 0 mm | 6 | |
| Dec. 6 |  Partly cloudy | 21° /4° | 0 mm | 6 | |
| Dec. 7 | Partly cloudy | 16° /2° | 0 mm | 5 | |
| Dec. 8 | Mist | 15° /2° | 0 mm | 4 | |
| Dec. 9 | Sunny | 14° /-1° | 0 mm | 5 | |
| Dec. 10 | Sunny | 14° /-4° | 0 mm | 5 | |
| Dec. 11 | Overcast | 15° /1° | 0 mm | 4 | |
| Dec. 12 | Sunny | 14° /2° | 0 mm | 4 | |
| Dec. 13 | Sunny | 14° /1° | 0 mm | 4 | |
| Dec. 14 | Overcast | 15° /3° | 0 mm | 4 | |
| Dec. 15 | Sunny | 15° /2° | 0 mm | 4 | |
| Dec. 16 | Sunny | 16° /1° | 0 mm | 5 | |
| Dec. 17 | Overcast | 17° /4° | 0 mm | 5 | |
| Dec. 18 |  Light rain | 18° /5° | 0.6 mm | 5 | |
| Dec. 19 | Light drizzle | 14° /6° | 0.6 mm | 4 | |
| Dec. 20 |  Light rain shower | 16° /6° | 1.1 mm | 4 | |
| Dec. 21 |  Moderate or heavy rain with thunder | 17° /6° | 2.8 mm | 4 | |
| Dec. 22 | Light rain | 15° /7° | 1.8 mm | 4 | |
| Dec. 23 | Sunny | 16° /5° | 0 mm | 5 | |
| Dec. 24 | Partly cloudy | 13° /3° | 0 mm | 4 | |
| Dec. 25 | Partly cloudy | 13° /3° | 0 mm | 4 | |
| Dec. 26 | Partly cloudy | 15° /4° | 0 mm | 4 | |
| Dec. 27 | Overcast | 16° /6° | 0 mm | 5 | |
| Dec. 28 | Overcast | 15° /3° | 0 mm | 4 | |
| Dec. 29 | Overcast | 18° /5° | 0 mm | 4 | |
| Dec. 30 | Patchy rain possible | 13° /4° | 1.7 mm | 4 | |
| Dec. 31 | Light rain shower | 12° /1° | 1.7 mm | 3 | |
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Important Notice
Our weather forecast for Lancaster 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 Lancaster forecast closer to your planned date for the most up-to-date weather information.
Change Month
Lancaster in December - FAQ
What are the expected maximum and minimum temperatures in Lancaster during December?
Prepare for cooler days with highs just around 15° and colder nights, dipping below 3°.
How much rainfall should be expected in Lancaster during December?
Expect minimal rainfall in Lancaster during December, with a total of 10.2 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Lancaster during December?
The average wind speed in Lancaster during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Lancaster
Explore the daily rainfall trends and prepare for Lancasters December weather 💧
UV exposure in Lancaster during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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