Rancho Cucamonga weather in December (California, United States of America)

Curious about the December weather in Rancho Cucamonga? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In December, Rancho Cucamonga typically experiences pleasant temperatures and moderate rainfall. December is a winter month. Throughout the daytime, temperatures often hover around 18°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 6°C. While this is the time of year with slightly cooler averages, it remains comfortably warm.

Rancho Cucamonga in December usually receives moderate rainfall, averaging around 98 mm for the month. It is the wettest month of the year, so an umbrella might come in handy. When we look at the climate data from the last 30 years, we can expect around 8 days of rain.

The days are predominantly sunny, with an estimated total of around 205 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Rancho Cucamonga. January, February, March, April, May, June, July, September, October and November typically offer the most agreeable circumstances. On the other hand, August and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Rancho Cucamonga climate page with graphs.

 

Rancho Cucamonga, monthly averages in December

Min Temperature 6°C  

Max Temperature 18°C  

Chance of Rain 27%  

Precipitation 98 mm  

Rainy days 8 days  

Sunshine 205 hours *  

Percentage Sunshine *  

* Data from: Corona, the United States of America (25 KM, 16 Miles).

Where to go in the United States of America in December

Find out more about the weather in the United States of America in December and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Rancho Cucamonga in December?

For visitors traveling to Rancho Cucamonga, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in December.

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Rancho Cucamonga.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.