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 sees a slight reduction in average high-temperature, with a shift from an agreeable 73°F (22.8°C) in November to an enjoyable 65.5°F (18.6°C). December's average low-temperature reading settles at a fresh 50.7°F (10.4°C).Humidity
In Olmos, Texas, the average relative humidity in December is 72%.Rainfall
In Olmos, in December, it is raining for 10.5 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 131.8 rainfall days, and 15.55" (395mm) of precipitation is accumulated.Snowfall
Months with snowfall are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Olmos, during the entire year, snow falls for 0.5 days and aggregates up to 0.16" (4mm) of snow.Daylight
December has the shortest days of the year, with an average of 10h and 24min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 5:34 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:46 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 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 3 translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Boost your sun resistance with garments that are densely woven yet spacious. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
When does it start to snow?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Olmos have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Olmos, TX
- Average high temperature in December: 65.5°F
The warmest month (with the highest average high temperature) is August (97°F).
The month with the lowest average high temperature is January (64.4°F).
- Average low temperature in December: 50.7°F
The month with the highest average low temperature is August (77.7°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in December
Olmos, TX
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in December
Olmos, TX
- Average wind speed in December: 8.4mph
The windiest month (with the highest average wind speed) is May (10.7mph).
The calmest month (with the lowest average wind speed) is September (8mph).
Average humidity in December
Olmos, TX
- Average humidity in December: 72%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (64%).
Average rainfall in December
Olmos, TX
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is September (2.2").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in December
Olmos, TX
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is September (16.8 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Olmos, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Olmos, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).
Average daylight in December /
Average sunshine in December
Olmos, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Olmos, TX
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is September (11.2 days).
Average UV index in December
Olmos, TX
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Olmos, 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 21).
Average visibility in December
Olmos, 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).
Olmos, Texas, USA
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