December weather forecastMoraga, CA
December
Weather in December
December, the first month of the winter in Moraga, is still a cool month, with an average temperature ranging between max 55.2°F (12.9°C) and min 43.7°F (6.5°C).Temperature
December, having an average high-temperature of 55.2°F (12.9°C) and an average low-temperature of 43.7°F (6.5°C), is the coldest month.Humidity
The average relative humidity in December is 71%.Rainfall
In Moraga, in December, during 10.7 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 74.4 rainfall days, and 12.6" (320mm) of precipitation is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:05 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:59 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 5.8h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in December suggests the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Moraga, CA
- Average high temperature in December: 55.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in December: 43.7°F
The months with the highest average low temperature are August and September (56.8°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in December
Moraga, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Moraga, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in December
Moraga, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is October (60%).
Average rainfall in December
Moraga, CA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is February (2.6").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Moraga, CA
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is August (0.8 days).
Average daylight in December /
Average sunshine in December
Moraga, CA
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Moraga, CA
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in December
Moraga, CA
- Average UV index in December: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Moraga, CA
- Average cloud cover in December: 34
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Moraga, 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).
