Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
During the coldest month, December, temperatures average a high of 67.3°F (19.6°C) and a low of 50.4°F (10.2°C).Humidity
With an average relative humidity of 40%, December is the most humid month in Westmorland.Rainfall
In Westmorland, California, during December, the rain falls for 2.4 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, there are 31.2 rainfall days, and 3.27" (83mm) of precipitation is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year in Westmorland.On the first day of December, sunrise is at 6:28 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 4:46 pm PST.
Sunshine
December has the least sunshine of the year in Westmorland, with an average of 7h of sunshine.UV index
With an average maximum UV index of 4, December is the month with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 4 in December leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What month is the coldest in Westmorland?
What are the temperatures in Westmorland in December?
What is the most humid month in Westmorland?
What is the average humidity in December in Westmorland?
How much does it rain in Westmorland in December?
What is the month with the shortest days in Westmorland?
How many hours of daylight does Westmorland have in December?
When are sunrise and sunset in December in Westmorland?
What is the month with the least sunshine in Westmorland?
How many hours of sunshine does Westmorland have in December?
What is the month with the lowest UV index in Westmorland?
How high is the UV index in December in Westmorland?
Average temperature in December
Westmorland, CA
- Average high temperature in December: 67.3°F
The warmest months (with the highest average high temperature) are July and August (107.2°F).
The month with the lowest average high temperature is December (67.3°F).
- Average low temperature in December: 50.4°F
The month with the highest average low temperature is August (85.6°F).
The coldest months (with the lowest average low temperature) are January and December (50.4°F).
Average pressure in December
Westmorland, CA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).
Average wind speed in December
Westmorland, CA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in December
Westmorland, CA
- Average humidity in December: 40%
The month with the highest relative humidity is December (40%).
The month with the lowest relative humidity is June (22%).
Average rainfall in December
Westmorland, CA
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is July (0.67").
The driest month (with the least rainfall) is May (0.04").
Average rainfall days in December
Westmorland, CA
- Average rainfall days in December: 2.4 days
The month with the highest number of rainy days is July (6.4 days).
The month with the least rainy days is May (0.8 days).
Average daylight in December /
Average sunshine in December
Westmorland, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Westmorland, CA
- Average sunshine days in December: 28.4 days
The month with the most sunshine days is May (30.1 days).
The month with the least sunshine days is August (21.6 days).
Average UV index in December
Westmorland, CA
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in December
Westmorland, CA
- Average cloud cover in December: 18
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
Westmorland, CA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Westmorland, California, USA
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