Rancho Cucamonga
December
Weather in Rancho Cucamonga for December 2024
Your guide to Rancho Cucamonga weather in December - trends and predictions
In general, the average temperature in Rancho Cucamonga at the beginning of December is 20.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.1 °F by the end of December.
Rancho Cucamonga sees moderate rainfall in December, averaging 7 rainy days.
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24
Dry days
7
Rainy days
0
Snow days
19°/9°
Temperatures
9 km/h
Avg max wind
45 %
Avg humidity
Rancho Cucamonga in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | ||||||
| 2  19° | 3 22° | 4  23° | 5 25° | 6 22° | 7 17° | 8 19° |
| 9 18° | 10 22° | 11 20° | 12 18° | 13 19° | 14 19° | 15 21° |
| 16 22° | 17 23° | 18  18° | 19 16° | 20 16° | 21  17° | 22  16° |
| 23 16° | 24 16° | 25 18° | 26 18° | 27 17° | 28  19° | 29 18° |
| 30 12° | 31 11° |
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Temperatures trend during December in Rancho Cucamonga
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 | Partly cloudy | 17° /6° | 0 mm | 5 | |
| Dec. 2 | Sunny | 19° /5° | 0 mm | 5 | |
| Dec. 3 | Sunny | 22° /7° | 0 mm | 6 | |
| Dec. 4 | Overcast | 23° /10° | 0 mm | 5 | |
| Dec. 5 | Sunny | 25° /11° | 0 mm | 7 | |
| Dec. 6 | Sunny | 22° /12° | 0 mm | 6 | |
| Dec. 7 | Partly cloudy | 17° /8° | 0 mm | 5 | |
| Dec. 8 | Sunny | 19° /6° | 0 mm | 5 | |
| Dec. 9 | Partly cloudy | 18° /6° | 0 mm | 5 | |
| Dec. 10 | Sunny | 22° /7° | 0 mm | 6 | |
| Dec. 11 | Overcast | 20° /10° | 0 mm | 5 | |
| Dec. 12 | Sunny | 18° /8° | 0 mm | 5 | |
| Dec. 13 | Sunny | 19° /8° | 0 mm | 5 | |
| Dec. 14 | Overcast | 19° /8° | 0 mm | 4 | |
| Dec. 15 | Partly cloudy | 21° /9° | 0 mm | 6 | |
| Dec. 16 | Sunny | 22° /10° | 0 mm | 6 | |
| Dec. 17 | Partly cloudy | 23° /11° | 0 mm | 6 | |
| Dec. 18 | Patchy rain possible | 18° /12° | 0.4 mm | 4 | |
| Dec. 19 | Light rain shower | 16° /13° | 8.3 mm | 4 | |
| Dec. 20 | Light rain shower | 16° /13° | 9.7 mm | 4 | |
| Dec. 21 | Patchy light rain with thunder | 17° /12° | 6.7 mm | 4 | |
| Dec. 22 | Light drizzle | 16° /9° | 5.5 mm | 4 | |
| Dec. 23 | Sunny | 16° /6° | 0 mm | 5 | |
| Dec. 24 | Overcast | 16° /7° | 0 mm | 4 | |
| Dec. 25 | Partly cloudy | 18° /8° | 0 mm | 5 | |
| Dec. 26 | Partly cloudy | 18° /8° | 0 mm | 5 | |
| Dec. 27 | Overcast | 17° /9° | 0 mm | 4 | |
| Dec. 28 | Cloudy | 19° /8° | 0 mm | 4 | |
| Dec. 29 | Overcast | 18° /9° | 0 mm | 4 | |
| Dec. 30 | Light rain shower | 12° /7° | 9 mm | 3 | |
| Dec. 31 | Light rain shower | 11° /6° | 3.8 mm | 3 | |
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Important Notice
Our weather forecast for Rancho Cucamonga 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 Rancho Cucamonga forecast closer to your planned date for the most up-to-date weather information.
Rancho Cucamonga in December - FAQ
What are the expected maximum and minimum temperatures in Rancho Cucamonga during December?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Rancho Cucamonga during December?
In December, Rancho Cucamonga can expect light to moderate rainfall, totaling 43.3 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Rancho Cucamonga during December?
The average wind speed in Rancho Cucamonga during December is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
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