December weather forecastBrownsville, TX
December
Weather in December
December marks the beginning of the winter season in Brownsville. The weather in this month is characterized by cooler temperatures, which fluctuate between 59.9°F (15.5°C) and 70.7°F (21.5°C). The city observes its darkest days with the shortest daylight hours. The pressure returns to its annual high, creating a heavier atmosphere. Despite lowering temperatures and lesser daylight, the city enjoys a fair share of sunshine, cheering up the wintry landscape.Temperature
As November makes way for December, Brownsville's average high-temperature eases from a warm 76.3°F (24.6°C) to an agreeable 70.7°F (21.5°C). Nighttime temperature dips to a mean of 59.9°F (15.5°C) during December.Humidity
February, May and December, with an average relative humidity of 74%, are the most humid months.Rainfall
In December, the rain falls for 8.9 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. In Brownsville, during the entire year, the rain falls for 114 days and collects up to 11.22" (285mm) of precipitation.Daylight
With an average of 10h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:00 am and sunset at 5:38 pm. On the last day of December, sunrise is at 7:16 am and sunset at 5:49 pm CST.
Sunshine
With an average of 4.9h of sunshine, December has the least sunshine of the year.UV index
The month with the lowest UV index is December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in December leads to these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Brownsville, TX
- Average high temperature in December: 70.7°F
The warmest month (with the highest average high temperature) is August (93.2°F).
The month with the lowest average high temperature is January (68.9°F).
- Average low temperature in December: 59.9°F
The month with the highest average low temperature is August (80.8°F).
The coldest month (with the lowest average low temperature) is January (57°F).
Average pressure in December
Brownsville, TX
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in December
Brownsville, TX
- Average wind speed in December: 11.4mph
The windiest months (with the highest average wind speed) are March and April (12.8mph).
The calmest month (with the lowest average wind speed) is September (9.3mph).
Average humidity in December
Brownsville, TX
- Average humidity in December: 74%
The months with the highest relative humidity are February, May and December (74%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Brownsville, TX
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is September (1.81").
The driest months (with the least rainfall) are February and April (0.39").
Average rainfall days in December
Brownsville, TX
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is September (14.4 days).
The month with the least rainy days is February (6.9 days).
Average daylight in December /
Average sunshine in December
Brownsville, TX
- Average daylight in December: 10h and 36min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Brownsville, TX
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is March (21.1 days).
The month with the least sunshine days is September (12.8 days).
Average UV index in December
Brownsville, TX
- Average UV index in December: 4
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in December
Brownsville, TX
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Brownsville, TX
- 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).
