December weather forecastCahuilla, CA
December
Weather in December
December, the first month of the winter in Cahuilla, is still a refreshing month, with an average temperature fluctuating between 57°F (13.9°C) and 40.5°F (4.7°C).Temperature
December is the coldest month, with the temperature often reaching an average high of 57°F (13.9°C) and an average low of 40.5°F (4.7°C).Humidity
The average relative humidity in December is 53%.Rainfall
In December, the rain falls for 5.3 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 52.8 rainfall days, and 7.01" (178mm) of precipitation is accumulated.Snowfall
In Cahuilla, snow does not fall in January, April through October and December.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 Cahuilla, sunrise is at 6:33 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:49 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.8h of sunshine.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 3 translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cahuilla, CA
- Average high temperature in December: 57°F
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in December: 40.5°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in December
Cahuilla, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Cahuilla, CA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest month (with the lowest average wind speed) is September (5.1mph).
Average humidity in December
Cahuilla, CA
- Average humidity in December: 53%
The month with the highest relative humidity is February (54%).
The month with the lowest relative humidity is August (37%).
Average rainfall in December
Cahuilla, CA
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Cahuilla, CA
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is July (6.3 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in December
Cahuilla, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are January, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Cahuilla, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Cahuilla, 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 48min
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 48min).
Average sunshine days in December
Cahuilla, CA
- Average sunshine days in December: 24.8 days
The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is July (20.7 days).
Average UV index in December
Cahuilla, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Cahuilla, CA
- Average cloud cover in December: 23
The month with the most cloud cover is December (Cloud cover 23).
The months with the least cloud cover are June and August (Cloud cover 6).
Average visibility in December
Cahuilla, 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).
