December Weather in Shasta

Last updated: March 2, 2024

The weather in Shasta, United States, during December is characterized by an average temperature of 8°C (46°F). Highs can soar to 19°C (67°F), while lows may dip to 0°C (32°F). Typically, the humidity level in Shasta throughout December hovers around 86%.

0°C (32°F)

Minimum temperature

8°C (46°F)

Average temperature

19°C (67°F)

Maximum temperature

86%

Humidity

Precipitation and Sunshine hours

In December, Shasta averages 149 mm (5.9 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 9 hours 18 minutes of daylight, with the sun shining for approximately 5 hours 29 minutes each day. Additionally, there is a 38% probability of sunny days during this period.

149 mm (5.9 inches)

Precipitation

11 rainy days

Rainy days

5 hours 29 minutes

Sunshine hours

38%

Chance of sun

UV Index

In December, the UV Index in Shasta reaches a maximum of 2, indicating a level of Low exposure. The most intense UV radiation typically occurs between 10:00 and 12:00, during which unprotected skin may burn in as little as 45 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	2	2	2	2	1	1	0	0	0
Exposure	Low
Time to burn	45 min