San Dimas Weather in December
December in San Dimas brings pleasant temperatures, with daytime highs of 19°C (66°F) and nights around 6°C (43°F). It's also the wettest month of the year, so an umbrella is a must.
Rainfall in San Dimas in December
The month brings the most rain, so be prepared with an umbrella for the occasional shower. This month experiences about 9 days of rain according to historical data, averaging 93 mm (3.7 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in San Dimas in December
San Dimas in December gets highs of 19°C (66°F) during the day and drops to 6°C (43°F) at night. December is known for being in the winter season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep. Experience mild yet warm temperatures during this month, offering a comfortable climate.
Sunshine in San Dimas in December
The days are predominantly sunny, with an estimated total of around 205 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.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 San Dimas.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Dimas's climate page.
San Dimas Temperature in December
Min Temperature
6°C (43°F)
Max Temperature
19°C (66°F)
Chance of Rain
30%
Precipitation
93 mm (3.7 in)
Rainy days
9 days
Sunshine
205 hours *
Percentage Sunshine
*
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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tolerable
unpleasant
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What to Wear in San Dimas in December
Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in San Dimas in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Dimas's climate page.
See the full San Dimas climate overview or explore weather in the United States of America.
