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, with an average high of 40.1°F (4.5°C) and a low of 26.1°F (-3.3°C), signifies the coldest month of the year.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 60%.Rainfall
In December, the rain falls for 4.9 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 47.7 rainfall days, and 4.96" (126mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. The month with the most snowfall is December, when snow falls for 5.4 days and typically aggregates up to 3.54" (90mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:48 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:06 am and sunset at 4:37 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during December leads to these advisories:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month?
How much does it snow in December?
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?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Round Mountain, NV
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (40.1°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in December
Round Mountain, NV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Round Mountain, NV
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is January (6.5mph).
Average humidity in December
Round Mountain, NV
- Average humidity in December: 60%
The months with the highest relative humidity are January and December (60%).
The month with the lowest relative humidity is August (20%).
Average rainfall in December
Round Mountain, NV
- Average rainfall in December: 0.59"
The wettest months (with the highest rainfall) are March and May (0.71").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in December
Round Mountain, NV
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in December
Round Mountain, NV
- Average snowfall in December: 3.54"
The month with the highest snowfall is December (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Round Mountain, NV
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is December (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Round Mountain, NV
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in December
Round Mountain, NV
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (20.8 days).
Average UV index in December
Round Mountain, NV
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Round Mountain, NV
- Average cloud cover in December: 24
The month with the most cloud cover is December (Cloud cover 24).
The months with the least cloud cover are August and September (Cloud cover 7).
Average visibility in December
Round Mountain, NV
- 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).
Round Mountain, Nevada, USA
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