December weather forecastMesaville, CA
December
Weather in December
The first month of the winter, December, is still a refreshing month in Mesaville, California, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 62.8°F (17.1°C).Temperature
The coldest period tends to be December, when average temperatures fluctuate between a high of 62.8°F (17.1°C) and a low of 48.2°F (9°C).Humidity
January and December, with an average relative humidity of 38%, are the most humid months.Rainfall
In Mesaville, in December, it is raining for 2.7 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 34.2 rainfall days, and 2.99" (76mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:25 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 4:40 pm PST.
Sunshine
January and December, with an average of 7.2h of sunshine, are months with the least sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. 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: The UV index of 3 in December translates into these instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mesaville, CA
- Average high temperature in December: 62.8°F
The warmest month (with the highest average high temperature) is July (105.1°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in December: 48.2°F
The month with the highest average low temperature is August (86.2°F).
The coldest month (with the lowest average low temperature) is December (48.2°F).
Average pressure in December
Mesaville, 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 (29.74"Hg).
Average wind speed in December
Mesaville, CA
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is November (6.4mph).
Average humidity in December
Mesaville, CA
- Average humidity in December: 38%
The months with the highest relative humidity are January and December (38%).
The month with the lowest relative humidity is June (18%).
Average rainfall in December
Mesaville, CA
- Average rainfall in December: 0.24"
The wettest month (with the highest rainfall) is July (0.55").
The driest months (with the least rainfall) are May and June (0.04").
Average rainfall days in December
Mesaville, CA
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is July (7.3 days).
The month with the least rainy days is May (1.2 days).
Average daylight in December /
Average sunshine in December
Mesaville, 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: 7h and 12min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 12min).
Average sunshine days in December
Mesaville, CA
- Average sunshine days in December: 27.6 days
The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (19.1 days).
Average UV index in December
Mesaville, CA
- Average UV index in December: 3
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 3).
Average cloud cover in December
Mesaville, 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 5).
Average visibility in December
Mesaville, 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).
