Rancho Cucamonga Weather in December

Thinking of visiting Rancho Cucamonga in December? Expect pleasant temperatures reaching 18°C (64°F) during the day, dropping to 6°C (43°F) at night, and be prepared for the wettest month of the year.

Rainfall in Rancho Cucamonga in December

With frequent rain showers this month, having an umbrella on hand will keep you dry. You can typically expect 8 days of rain this month, averaging around 98 mm (3.9 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Rancho Cucamonga in December

In December, Rancho Cucamonga sees pleasant temperatures, with highs of 18°C (64°F). Nights drop to around 6°C (43°F). December is in the winter season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 6°C (43°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep. Though this month features the lowest temperatures of the year, they are far from chilly and remain warm.

Sunshine in Rancho Cucamonga in December

With approximately 205 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, October and November typically offer the best circumstances for Rancho Cucamonga.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Rancho Cucamonga's climate page.

Rancho Cucamonga Temperature in December

Min Temperature 6°C (43°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 27%  

Precipitation 98 mm (3.9 in)  

Rainy days 8 days  

Sunshine 205 hours *  

Percentage Sunshine *  

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

What to Wear in Rancho Cucamonga in December

Comfortable temperatures call for an easy wardrobe in December. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Rancho Cucamonga in December

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

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Rancho Cucamonga's climate page.

More climate data for Rancho Cucamonga

Temperature Rainfall Sunshine

See the full Rancho Cucamonga climate overview or explore weather in the United States of America.