Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 77.5°F (25.3°C) in November to an agreeable 70.9°F (21.6°C). Throughout the month of December, Rio Grande City sees a steady low-temperature average of 54.5°F (12.5°C).Humidity
The most humid month is December, with an average relative humidity of 65%.Rainfall
In December, in Rio Grande City, the rain falls for 7.5 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Rio Grande City, there are 98.5 rainfall days, and 13.11" (333mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
With an average of 10h and 30min of daylight, December has the shortest days of the year in Rio Grande City.On the first day of December in Rio Grande City, sunrise is at 7:06 am and sunset at 5:42 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:54 pm CST.
Sunshine
December has the least sunshine of the year in Rio Grande City, with an average of 5.8h of sunshine.UV index
The month with the lowest UV index in Rio Grande City is December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 4 suggests this advice:
Exercise prevention - Protecting skin and eyes from harm is required. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the usual temperature for Rio Grande City in December?
What is the most humid month in Rio Grande City?
What is the average humidity in December in Rio Grande City?
How much does it rain in Rio Grande City in December?
When it does not snow in Rio Grande City?
Does it snow in Rio Grande City in December?
What is the month with the shortest days in Rio Grande City?
How many hours of daylight does Rio Grande City have in December?
When is the sunrise / sunset in December in Rio Grande City?
What is the month with the least sunshine in Rio Grande City?
How many hours of sunshine does Rio Grande City have in December?
What is the month with the lowest UV index in Rio Grande City?
How high is the UV index in December in Rio Grande City?
Average temperature in December
Rio Grande City, TX
- Average high temperature in December: 70.9°F
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in December: 54.5°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (52.7°F).
Average pressure in December
Rio Grande City, TX
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in December
Rio Grande City, TX
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is December (9.2mph).
Average humidity in December
Rio Grande City, TX
- Average humidity in December: 65%
The month with the highest relative humidity is December (65%).
The month with the lowest relative humidity is August (53%).
Average rainfall in December
Rio Grande City, TX
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is September (2.56").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
Rio Grande City, TX
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall days in December
Rio Grande City, TX
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Rio Grande City, TX
- Average daylight in December: 10h and 3min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in December: 5h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Rio Grande City, TX
- Average sunshine days in December: 21.1 days
The months with the most sunshine days are July and August (22.6 days).
The month with the least sunshine days is September (12.9 days).
Average UV index in December
Rio Grande City, TX
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in December
Rio Grande City, TX
- Average cloud cover in December: 36
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Rio Grande City, 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).
Rio Grande City, Texas, USA
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