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
Imperial's coldest temperatures are experienced in December, with average high temperatures of 66.4°F (19.1°C) and lows of 50°F (10°C).Humidity
The most humid month is December, with an average relative humidity of 40%.Rainfall
The months with the most rainfall are March, April, July through September and December, with an average 0.08" (2mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:27 am and sunset at 4:35 pm. On the last day of December, sunrise is at 6:44 am and sunset at 4:46 pm PST.
Sunshine
With an average of 7.1h of sunshine, December has the least sunshine of the year.UV index
With an average maximum UV index of 4, December is the month with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 4 in December translates into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Imperial?
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December in Imperial?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Imperial have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Imperial, CA
- Average high temperature in December: 66.4°F
The warmest month (with the highest average high temperature) is July (106.7°F).
The month with the lowest average high temperature is December (66.4°F).
- Average low temperature in December: 50°F
The month with the highest average low temperature is August (85.5°F).
The coldest month (with the lowest average low temperature) is January (49.8°F).
Average pressure in December
Imperial, 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
Imperial, CA
- Average wind speed in December: 5.4mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).
Average humidity in December
Imperial, 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 (21%).
Average rainfall in December
Imperial, CA
- Average rainfall in December: 0.08"
The wettest months (with the highest rainfall) are March, April, July, August, September and December (0.08").
The driest months (with the least rainfall) are May and June (0").
Average rainfall days in December
Imperial, CA
- Average rainfall days in December: 1 days
The month with the highest number of rainy days is July (2.8 days).
The month with the least rainy days is May (0.3 days).
Average daylight in December /
Average sunshine in December
Imperial, 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 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
Imperial, CA
- Average sunshine days in December: 29.8 days
The month with the most sunshine days is May (30.4 days).
The month with the least sunshine days is August (25.8 days).
Average UV index in December
Imperial, 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
Imperial, CA
- Average cloud cover in December: 17
The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 4).
Average visibility in December
Imperial, 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).
Imperial, California, USA
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