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 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
The average high-temperature slightly decreases in December, shifting from a warm 74.3°F (23.5°C) in November to a comfortable 67.5°F (19.7°C). During the month of December, an average temperature of 53.1°F (11.7°C) is noted during the nights.Humidity
In December, the average relative humidity is 73%.Rainfall
In December, in Riviera, the rain falls for 6.4 days. Throughout December, 0.31" (8mm) of precipitation is accumulated. Throughout the year, there are 90.4 rainfall days, and 7.28" (185mm) of precipitation is accumulated.Snowfall
The only month with snowfall is December. The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.Daylight
With an average of 10h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:04 am and sunset at 5:36 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:48 pm CST.
Sunshine
With an average of 4.8h of sunshine, December has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 4 in December translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month?
When does it start to snow?
What is the month with the shortest days in Riviera?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Riviera have in December?
What is the month with the lowest UV index in Riviera?
What is the UV index intensity in December?
Average temperature in December
Riviera, TX
- Average high temperature in December: 67.5°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (65.8°F).
- Average low temperature in December: 53.1°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (50.7°F).
Average pressure in December
Riviera, TX
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Riviera, TX
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is May (11.1mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).
Average humidity in December
Riviera, TX
- Average humidity in December: 73%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (65%).
Average rainfall in December
Riviera, TX
- Average rainfall in December: 0.31"
The wettest month (with the highest rainfall) is September (1.3").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in December
Riviera, TX
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is September (13.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Riviera, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Riviera, TX
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Riviera, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Riviera, TX
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in December
Riviera, TX
- Average UV index in December: 4
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Riviera, TX
- Average cloud cover in December: 46
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in December
Riviera, 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).
Riviera, Texas, USA
Weather forecast for your location
2. Allow the app to use your location