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 onset brings a negligible change in high-temperatures, falling from a comfortable 67.5°F (19.7°C) in November to a moderate 59.7°F (15.4°C). December in Lyons witnesses an average low-temperature hovering around a frosty 44.8°F (7.1°C).Humidity
In December, the average relative humidity is 75%.Rainfall
In Lyons, in December, during 8.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Lyons, during the entire year, the rain falls for 126.1 days and collects up to 16.14" (410mm) of precipitation.Snowfall
January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 1 snowfall days, and 0.16" (4mm) of snow is accumulated.Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:05 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:36 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5h of sunshine.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 moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties 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 much does it rain in December?
When does it start snowing?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Lyons, TX
- Average high temperature in December: 59.7°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (58.5°F).
- Average low temperature in December: 44.8°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in December
Lyons, TX
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are May and June (29.93"Hg).
Average wind speed in December
Lyons, TX
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in December
Lyons, TX
- Average humidity in December: 75%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (65%).
Average rainfall in December
Lyons, TX
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (2.56").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in December
Lyons, TX
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is September (13.5 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
Lyons, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is January (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
Lyons, TX
- Average snowfall days in December: 0.2 days
The months with the highest number of snowfall days are January and February (0.3 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
Lyons, TX
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Lyons, TX
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is September (13.8 days).
Average UV index in December
Lyons, 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
Lyons, TX
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Lyons, 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).
Lyons, Texas, USA
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