December weather forecastLa Cañada Flintridge, CA
December
Weather in December
December, the first month of the winter in La Cañada Flintridge, is also an enjoyable month, with an average temperature fluctuating between 45.5°F (7.5°C) and 61°F (16.1°C).Temperature
La Cañada Flintridge's coldest month, December, registers temperatures that range from a high of 61°F (16.1°C) to a low of 45.5°F (7.5°C).Humidity
In December, the average relative humidity is 52%.Rainfall
In La Cañada Flintridge, during December, the rain falls for 6.2 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 52 rainfall days, and 8.82" (224mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:41 am and sunset at 4:43 pm. On the last day of December, in La Cañada Flintridge, sunrise is at 6:58 am and sunset at 4:53 pm PST.
Sunshine
February and December, with an average of 6.9h 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 value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. 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
La Cañada Flintridge, CA
- Average high temperature in December: 61°F
The warmest month (with the highest average high temperature) is August (86.2°F).
The month with the lowest average high temperature is December (61°F).
- Average low temperature in December: 45.5°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in December
La Cañada Flintridge, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
La Cañada Flintridge, CA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in December
La Cañada Flintridge, CA
- Average humidity in December: 52%
The months with the highest relative humidity are March, May and June (56%).
The month with the lowest relative humidity is November (46%).
Average rainfall in December
La Cañada Flintridge, CA
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
La Cañada Flintridge, CA
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.3 days).
Average daylight in December /
Average sunshine in December
La Cañada Flintridge, 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 54min
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 54min).
Average sunshine days in December
La Cañada Flintridge, CA
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.3 days).
Average UV index in December
La Cañada Flintridge, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
La Cañada Flintridge, CA
- Average cloud cover in December: 21
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
La Cañada Flintridge, 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).
