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
Temperature records mark December as the coldest month, with highs averaging 64.6°F (18.1°C) and lows at 50.7°F (10.4°C).Humidity
In Vernon, the average relative humidity in December is 54%.Rainfall
In Vernon, during December, the rain falls for 5.2 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Vernon, during the entire year, the rain falls for 43.2 days and collects up to 6.46" (164mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:40 am and sunset at 4:43 pm. On the last day of December, in Vernon, sunrise is at 6:58 am and sunset at 4:54 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.7h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 4 leads to the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What is the usual temperature for Vernon in December?
What is the average humidity in December?
How many days does it rain in December in Vernon?
What is the month with the shortest days?
How many hours of daylight does Vernon have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Vernon have in December?
What is the month with the lowest UV index in Vernon?
What is the UV index reading in December?
Average temperature in December
Vernon, CA
- Average high temperature in December: 64.6°F
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (64.6°F).
- Average low temperature in December: 50.7°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (50°F).
Average pressure in December
Vernon, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in December
Vernon, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is October (4.7mph).
Average humidity in December
Vernon, CA
- Average humidity in December: 54%
The month with the highest relative humidity is June (65%).
The month with the lowest relative humidity is November (50%).
Average rainfall in December
Vernon, CA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is February (1.34").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Vernon, CA
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is March (5.9 days).
The month with the least rainy days is June (1.3 days).
Average daylight in December /
Average sunshine in December
Vernon, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).
Average sunshine days in December
Vernon, CA
- Average sunshine days in December: 24.5 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in December
Vernon, CA
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in December
Vernon, CA
- Average cloud cover in December: 22
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Vernon, 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).
Vernon, California, USA
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