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
Altair records a mild change in average high-temperature during December, easing from a pleasant 70°F (21.1°C) in November to a refreshing 62.1°F (16.7°C). In Altair, the average nighttime temperature during December is a chilly 47.8°F (8.8°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Altair, in December, it is raining for 11.5 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, in Altair, there are 166.4 rainfall days, and 30.71" (780mm) of precipitation is accumulated.Snowfall
January, February and December are months with snowfall. The months with the most snowfall are January and December, with an average 0.08" (2mm) of accumulated snow.Daylight
With an average of 10h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:03 am and sunset at 5:26 pm. On the last day of December, sunrise is at 7:20 am and sunset at 5:37 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. 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: An average maximum UV index of 3 in December leads to these recommendations:
Act with care - The need to guard against sun damage is communicated. Around midday, solar radiation is most harmful; hence, exposure should be limited. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What are December temperatures in Altair?
What is the average humidity in December in Altair?
How much does it rain in Altair in December?
What is the snowiest month in Altair?
When does it start snowing in Altair?
What is the month with the shortest days in Altair?
How many hours of daylight does Altair have in December?
When are sunrise and sunset in December in Altair?
What is the month with the least sunshine in Altair?
How many hours of sunshine does Altair have in December?
When is the lowest UV index in Altair?
What is the UV index reading in December in Altair?
Average temperature in December
Altair, TX
- Average high temperature in December: 62.1°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (61°F).
- Average low temperature in December: 47.8°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure in December
Altair, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Altair, TX
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is September (5.8mph).
Average humidity in December
Altair, TX
- Average humidity in December: 76%
The months with the highest relative humidity are February, March, May and June (78%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Altair, TX
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is May (4.13").
The driest months (with the least rainfall) are January and February (1.46").
Average rainfall days in December
Altair, TX
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is September (19 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in December
Altair, TX
- Average snowfall in December: 0.08"
The months with the highest snowfall are January and December (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
Altair, TX
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Altair, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Altair, TX
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is September (8.8 days).
Average UV index in December
Altair, TX
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Altair, TX
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Altair, TX
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, August, September, October, November and December (6mi).
The months with the lowest visibility are May, June and July (5mi).
Altair, Texas, USA
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