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
The coldest temperatures occur during December, when averages reach a peak of 63.3°F (17.4°C) and a low of 45.7°F (7.6°C).Humidity
In Irvings Crest, the average relative humidity in December is 58%.Rainfall
In Irvings Crest, in December, during 6 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Irvings Crest, during the entire year, the rain falls for 60.3 days and collects up to 8.43" (214mm) 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 December in Irvings Crest, sunrise is at 6:33 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:51 pm PST.
Sunshine
The month with the least sunshine in Irvings Crest is December, with an average of 6.7h of sunshine.UV index
The month with the lowest UV index in Irvings Crest is December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 3 in December leads to these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Irvings Crest?
What is the usual temperature for Irvings Crest in December?
What is the average humidity in December in Irvings Crest?
How much does it rain in Irvings Crest in December?
What is the month with the shortest days in Irvings Crest?
What is the average length of the day in December in Irvings Crest?
What time are sunrise and sunset in December in Irvings Crest?
What is the month with the least sunshine in Irvings Crest?
How long on average sun shines in December in Irvings Crest?
When is the lowest UV index in Irvings Crest?
How high is the UV index in December in Irvings Crest?
Average temperature in December
Irvings Crest, CA
- Average high temperature in December: 63.3°F
The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is December (63.3°F).
- Average low temperature in December: 45.7°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in December
Irvings Crest, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Irvings Crest, CA
- Average wind speed in December: 4.8mph
The windiest months (with the highest average wind speed) are April and May (5.3mph).
The calmest month (with the lowest average wind speed) is September (4mph).
Average humidity in December
Irvings Crest, CA
- Average humidity in December: 58%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in December
Irvings Crest, CA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Irvings Crest, CA
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is June (1.8 days).
Average daylight in December /
Average sunshine in December
Irvings Crest, 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: 6h and 4min
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: 6h and 42min).
Average sunshine days in December
Irvings Crest, CA
- Average sunshine days in December: 23.8 days
The month with the most sunshine days is June (27.4 days).
The month with the least sunshine days is July (19.9 days).
Average UV index in December
Irvings Crest, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Irvings Crest, CA
- Average cloud cover in December: 23
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Irvings Crest, 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).
Irvings Crest, California, USA
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