Lancaster (CA)
December
Weather in Lancaster, California for December 2025
Your guide to Lancaster weather in December - trends and predictions
So far, December 2025 in Lancaster is slightly warmer than the historical average by 1 °F.
The forecast for the next days in Lancaster predicts temperatures to be around 16 °F, close to the historical average.
In general, the average temperature in Lancaster at the beginning of December is 17.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.1 °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 |  Sunny | 16° /1° | 0 mm | 4 | |
| Dec. 2 |  Cloudy | 16° /1° | 0 mm | 4 | |
| Dec. 3 |  Mist | 15° /2° | 0 mm | 4 | |
| Dec. 4 | Sunny | 17° /2° | 0 mm | 4 | |
| Dec. 5 | Sunny | 18° /3° | 0 mm | 5 | |
| Dec. 6 | Sunny | 21° /4° | 0 mm | 6 | |
| Dec. 7 |  Partly cloudy | 17° /2° | 0 mm | 5 | |
| Dec. 8 | Mist | 16° /3° | 0 mm | 4 | |
| Dec. 9 | Sunny | 16° /1° | 0 mm | 5 | |
| Dec. 10 | Sunny | 16° /-1° | 0 mm | 5 | |
| Dec. 11 |  Overcast | 17° /3° | 0 mm | 4 | |
| Dec. 12 | Sunny | 17° /4° | 0 mm | 4 | |
| Dec. 13 | Sunny | 15° /3° | 0 mm | 4 | |
| Dec. 14 | Overcast | 17° /4° | 0 mm | 4 | |
| Dec. 15 | Sunny | 16° /3° | 0 mm | 4 | |
| Dec. 16 | Sunny | 17° /3° | 0 mm | 5 | |
| Dec. 17 | Sunny | 25° /7° | 0 mm | 0.6 | |
| Dec. 18 | Sunny | 25° /8° | 0 mm | 0.6 | |
| Dec. 19 | Sunny | 23° /9° | 0 mm | 0.6 | |
| Dec. 20 | Sunny | 22° /8° | 0 mm | 0.6 | |
| Dec. 21 | Sunny | 20° /11° | 0 mm | 0.5 | |
| Dec. 22 | Sunny | 18° /12° | 0 mm | 0 | |
| Dec. 23 | Partly cloudy | 17° /11° | 0 mm | 4 | |
| Dec. 24 |  Patchy rain possible | 14° /11° | 2.7 mm | 3 | |
| Dec. 25 | Patchy rain possible | 12° /8° | 4.9 mm | 3 | |
| Dec. 26 | Patchy rain possible | 11° /6° | 1.2 mm | 2 | |
| Dec. 27 | Patchy rain possible | 10° /5° | 4.2 mm | 2 | |
| Dec. 28 | Sunny | 10° /4° | 0 mm | 3 | |
| Dec. 29 | Sunny | 11° /3° | 0 mm | 3 | |
| Dec. 30 | Sunny | 12° /4° | 0 mm | 3 | |
| 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.
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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 💧
Typically, Lancaster has 5 rainy days in December with a total of 10.2 mm of rainfall.
UV exposure in Lancaster during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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