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
December's arrival signals a moderate reduction in the average high-temperature, easing from an enjoyable 64.9°F (18.3°C) in November to a still refreshing 56.3°F (13.5°C). Rio Vista's average low-temperature in the month of December is recorded at a wintry 41°F (5°C).Humidity
The average relative humidity in December in Rio Vista is 69%.Rainfall
In Rio Vista, Texas, in December, it is raining for 9.3 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 135 rainfall days, and 29.92" (760mm) of precipitation is accumulated.Snowfall
January, April through October and December are months without snowfall.Daylight
The month with the shortest days is December, with an average of 10h and 6min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 5:24 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:35 pm CST.
Sunshine
December has the least sunshine of the year in Rio Vista, Texas, with an average of 5.6h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Rio Vista. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 3 transforms into these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What are December temperatures in Rio Vista?
What is the average humidity in December in Rio Vista?
How many days does it rain in December in Rio Vista?
When it does not snow in Rio Vista?
Does it snow in Rio Vista in December?
What is the month with the shortest days in Rio Vista?
How many hours of daylight does Rio Vista have in December?
What time are sunrise and sunset in December in Rio Vista?
What is the month with the least sunshine in Rio Vista?
How many hours of sunshine does Rio Vista have in December?
When is the lowest UV index in Rio Vista?
What is the UV index reading in December in Rio Vista?
Average temperature in December
Rio Vista, TX
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55.8°F).
- Average low temperature in December: 41°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in December
Rio Vista, TX
- Average pressure in December: 30.12"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
Rio Vista, TX
- Average wind speed in December: 9mph
The windiest months (with the highest average wind speed) are March and April (10.6mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in December
Rio Vista, TX
- Average humidity in December: 69%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (57%).
Average rainfall in December
Rio Vista, TX
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in December
Rio Vista, TX
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in December
Rio Vista, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are January, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Rio Vista, TX
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Rio Vista, TX
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in December
Rio Vista, TX
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in December
Rio Vista, TX
- Average UV index in December: 3
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 3).
Average cloud cover in December
Rio Vista, TX
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Rio Vista, 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 Vista, Texas, USA
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