December weather forecastMartins, CA
December
Weather in December
December, the first month of the winter in Martins, is also a fresh month, with an average temperature fluctuating between 54.7°F (12.6°C) and 38.3°F (3.5°C).Temperature
With an average high-temperature of 54.7°F (12.6°C) and an average low-temperature of 38.3°F (3.5°C), December is the coldest month.Humidity
In December, the average relative humidity is 54%.Rainfall
December is the month with the most rainfall. Rain falls for 5.8 days and accumulates 1.57" (40mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. The month with the most snowfall is December, when snow falls for 2.4 days and typically aggregates up to 5.31" (135mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:43 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:01 am and sunset at 4:54 pm PST.
Sunshine
In Martins, the average sunshine in December is 7h.UV index
January, February, 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 unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 3 in December transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Martins, CA
- Average high temperature in December: 54.7°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is August (62.1°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in December
Martins, CA
- Average pressure in December: 30.09"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
Martins, CA
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).
Average humidity in December
Martins, CA
- Average humidity in December: 54%
The months with the highest relative humidity are February and March (56%).
The month with the lowest relative humidity is August (35%).
Average rainfall in December
Martins, CA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is December (1.57").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in December
Martins, CA
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is March (7.3 days).
The months with the least rainy days are August and September (1.2 days).
Average snowfall in December
Martins, CA
- Average snowfall in December: 5.31"
The month with the highest snowfall is December (5.31").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Martins, CA
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Martins, 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: 7h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are January and February (Average sunshine: 6h and 48min).
Average sunshine days in December
Martins, CA
- Average sunshine days in December: 23.3 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in December
Martins, CA
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Martins, CA
- Average cloud cover in December: 21
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in December
Martins, 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).
