December weather forecastBrownsville, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Brownsville, California, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 52.5°F (11.4°C).Temperature
December is the month when Brownsville, California, experiences its coldest temperatures, averaging a high of 52.5°F (11.4°C) and a low of 38.1°F (3.4°C).Humidity
In Brownsville, the average relative humidity in December is 67%.Rainfall
In December, the rain falls for 11.4 days. Throughout December, 5.28" (134mm) of precipitation is accumulated. Throughout the year, there are 88.4 rainfall days, and 30.35" (771mm) of precipitation is accumulated.Snowfall
February, November and December are months with snowfall. December is the last month it regularly snows. During 0.3 snowfall days, in December, Brownsville aggregates 0.24" (6mm) of snow. In Brownsville, during the entire year, snow falls for 1.1 days and aggregates up to 0.79" (20mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:06 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:51 pm PST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year in Brownsville.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Brownsville. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Boost your sun resistance with garments that are densely woven yet spacious. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Brownsville, CA
- Average high temperature in December: 52.5°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is December (52.5°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).
Average pressure in December
Brownsville, CA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Brownsville, CA
- Average wind speed in December: 5.5mph
The windiest months (with the highest average wind speed) are February, March and April (6.2mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Brownsville, CA
- Average humidity in December: 67%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and August (34%).
Average rainfall in December
Brownsville, CA
- Average rainfall in December: 5.28"
The wettest month (with the highest rainfall) is March (6.02").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in December
Brownsville, CA
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is March (15.5 days).
The month with the least rainy days is July (1.4 days).
Average snowfall in December
Brownsville, CA
- Average snowfall in December: 0.24"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are January, March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Brownsville, CA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Brownsville, CA
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Brownsville, CA
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (14.5 days).
Average UV index in December
Brownsville, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Brownsville, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Brownsville, 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).
