December weather forecastSpanish Hills, CA
December
Weather in December
The first month of the winter, December, is still a mild month in Spanish Hills, California, with an average temperature varying between 59.9°F (15.5°C) and 49.5°F (9.7°C).Temperature
February and December, with an average high-temperature of 59.9°F (15.5°C), are marked as the coldest months.Humidity
The average relative humidity in December in Spanish Hills, California, is 58%.Rainfall
In December, the rain falls for 5.4 days. Throughout December, 1.22" (31mm) of precipitation is accumulated. In Spanish Hills, California, during the entire year, the rain falls for 47.4 days and collects up to 7.36" (187mm) of precipitation.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:44 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:02 am and sunset at 4:57 pm PST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 6.8h of sunshine.UV index
January through April, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Spanish Hills. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during December translates into the following guidance:
Exercise prevention - Protecting skin and eyes from harm is required. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Spanish Hills, CA
- Average high temperature in December: 59.9°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The months with the lowest average high temperature are February and December (59.9°F).
- Average low temperature in December: 49.5°F
The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure in December
Spanish Hills, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in December
Spanish Hills, CA
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (4.7mph).
Average humidity in December
Spanish Hills, CA
- Average humidity in December: 58%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall in December
Spanish Hills, CA
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is January (1.38").
The driest months (with the least rainfall) are June and August (0.12").
Average rainfall days in December
Spanish Hills, CA
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is March (6.4 days).
The month with the least rainy days is August (1.7 days).
Average daylight in December /
Average sunshine in December
Spanish Hills, CA
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 48min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in December
Spanish Hills, CA
- Average sunshine days in December: 24.7 days
The month with the most sunshine days is October (26.1 days).
The month with the least sunshine days is February (22 days).
Average UV index in December
Spanish Hills, CA
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in December
Spanish Hills, CA
- Average cloud cover in December: 22
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Spanish Hills, 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).
