December Weather in Lucas Valley-Marinwood

Last updated: March 2, 2024

The weather in Lucas Valley-Marinwood, United States, during December is characterized by an average temperature of 10°C (51°F). Highs can soar to 18°C (66°F), while lows may dip to 4°C (39°F). Typically, the humidity level in Lucas Valley-Marinwood throughout December hovers around 79%.

4°C (39°F)

Minimum temperature

10°C (51°F)

Average temperature

18°C (66°F)

Maximum temperature

79%

Humidity

Precipitation and Sunshine hours

In December, Lucas Valley-Marinwood averages 98 mm (3.9 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 9 hours 33 minutes of daylight, with the sun shining for approximately 6 hours 8 minutes each day. Additionally, there is a 30% probability of sunny days during this period.

98 mm (3.9 inches)

Precipitation

9 rainy days

Rainy days

6 hours 8 minutes

Sunshine hours

30%

Chance of sun

UV Index

In December, the UV Index in Lucas Valley-Marinwood reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 0 1 1 2 3 3 3 2 1 1 0 0 0
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

Compare Lucas Valley-Marinwood's Climate with Cities Worldwide