December Weather in Rio Vista

Last updated: March 2, 2024

The weather in Rio Vista, United States, during December is characterized by an average temperature of 11°C (52°F). Highs can soar to 26°C (80°F), while lows may dip to -2°C (28°F). Typically, the humidity level in Rio Vista throughout December hovers around 87%.

-2°C (28°F)

Minimum temperature

11°C (52°F)

Average temperature

26°C (80°F)

Maximum temperature

87%

Humidity

Precipitation and Sunshine hours

In December, Rio Vista averages 56 mm (2.2 inches) of rainfall, typically over the course of 6 rainy days. The month enjoys an average of 10 hours 4 minutes of daylight, with the sun shining for approximately 7 hours 16 minutes each day. Additionally, there is a 50% probability of sunny days during this period.

56 mm (2.2 inches)

Precipitation

6 rainy days

Rainy days

7 hours 16 minutes

Sunshine hours

50%

Chance of sun

UV Index

In December, the UV Index in Rio Vista reaches a maximum of 4, 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 3 4 4 4 3 2 1 1 0 0
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

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