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 snowfall in December
- Average snowfall 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 month is December, with an average high-temperature of 58.6°F (14.8°C) and an average low-temperature of 41°F (5°C).Humidity
The average relative humidity in December is 54%.Rainfall
In San Jacinto, California, in December, it is raining for 6 days, with typically 1.22" (31mm) of accumulated precipitation. In San Jacinto, during the entire year, the rain falls for 54 days and collects up to 6.61" (168mm) of precipitation.Snowfall
December is the only month when snow falls in San Jacinto, California. December is the month with the most snowfall in San Jacinto. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.Daylight
The month with the shortest days in San Jacinto is December, with an average of 10h and 0min of daylight.On the first day of December in San Jacinto, sunrise is at 6:35 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:49 pm PST.
Sunshine
February and December, with an average of 6.7h of sunshine, are months with the least sunshine.UV index
November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily UV index of 3 turns into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What month is the coldest in San Jacinto?
What is the temperature in December in San Jacinto?
What is the average humidity in December in San Jacinto?
How much does it rain in San Jacinto in December?
What is the snowiest month in San Jacinto?
When does it start snowing in San Jacinto?
What is the month with the shortest days in San Jacinto?
What is the average length of the day in December in San Jacinto?
What time are sunrise and sunset in December in San Jacinto?
What are the months with the least sunshine in San Jacinto?
How long on average sun shines in December in San Jacinto?
What are the months with the lowest UV index in San Jacinto?
What is the UV index intensity in December in San Jacinto?
Average temperature in December
San Jacinto, CA
- Average high temperature in December: 58.6°F
The warmest month (with the highest average high temperature) is August (90.5°F).
The month with the lowest average high temperature is December (58.6°F).
- Average low temperature in December: 41°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure in December
San Jacinto, 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 (29.84"Hg).
Average wind speed in December
San Jacinto, CA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).
Average humidity in December
San Jacinto, CA
- Average humidity in December: 54%
The months with the highest relative humidity are February, March and May (56%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
San Jacinto, CA
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
San Jacinto, CA
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.6 days).
Average snowfall in December
San Jacinto, CA
- Average snowfall in December: 0.04"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
San Jacinto, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
San Jacinto, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
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 months with the least sunshine are February and December (Average sunshine: 6h and 42min).
Average sunshine days in December
San Jacinto, CA
- Average sunshine days in December: 24.2 days
The month with the most sunshine days is October (27.4 days).
The month with the least sunshine days is February (20.9 days).
Average UV index in December
San Jacinto, 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 November and December (UV index 3).
Average cloud cover in December
San Jacinto, CA
- Average cloud cover in December: 25
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
San Jacinto, 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).
San Jacinto, California, USA
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