December weather forecastRound Mountain, TX
December
Weather in December
December, the first month of the winter in Round Mountain, is still a refreshing month, with an average temperature varying between 59.9°F (15.5°C) and 43°F (6.1°C).Temperature
Start of December brings a slight shift in the average high-temperature, dipping a bit from November's enjoyable 67.1°F (19.5°C) to a moderate 59.9°F (15.5°C). During December nights, Round Mountain witnesses a consistent average temperature of 43°F (6.1°C).Humidity
In Round Mountain, the average relative humidity in December is 68%.Rainfall
February, November and December are months with the least rain when the rain falls for 6.9 days and typically aggregates up to 0.71" (18mm) of rain.Snowfall
In Round Mountain, snow does not fall in January, March through December.Daylight
The month with the shortest days in Round Mountain is December, with an average of 10h and 12min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 5:32 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:43 pm CST.
Sunshine
November and December, with an average of 5.7h of sunshine, are months with the least sunshine in Round Mountain.UV index
December is the month with the lowest UV index in Round Mountain, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Round Mountain, TX
- Average high temperature in December: 59.9°F
The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in December: 43°F
The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is January (41.2°F).
Average pressure in December
Round Mountain, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Round Mountain, TX
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in December
Round Mountain, TX
- Average humidity in December: 68%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (57%).
Average rainfall in December
Round Mountain, TX
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (3.62").
The driest months (with the least rainfall) are February, November and December (0.71").
Average rainfall days in December
Round Mountain, TX
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in December
Round Mountain, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Round Mountain, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.5 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
Round Mountain, TX
- Average daylight in December: 10h and 12min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 5h and 42min).
Average sunshine days in December
Round Mountain, TX
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.3 days).
Average UV index in December
Round Mountain, 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
Round Mountain, TX
- Average cloud cover in December: 36
The month with the most cloud cover is May (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Round Mountain, 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).
