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
Rockvale's coldest weather arrives in December, when temperatures average a high of 41.5°F (5.3°C) and a low of 23°F (-5°C).Humidity
In Rockvale, the average relative humidity in December is 59%.Rainfall
In December, the rain falls for 4.4 days. Throughout December, 0.47" (12mm) of precipitation is accumulated. In Rockvale, during the entire year, the rain falls for 120.5 days and collects up to 14.92" (379mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Rockvale, in December, during 6.5 snowfall days, 3.03" (77mm) of snow is typically accumulated. In Rockvale, during the entire year, snow falls for 33.9 days and aggregates up to 23.27" (591mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Rockvale.On the first day of the month, sunrise is at 6:59 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:50 pm MST.
Sunshine
In December, the average sunshine in Rockvale is 7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Rockvale?
How cold does it get in Rockvale in December?
What is the average humidity in December in Rockvale?
How many days does it rain in December in Rockvale?
How much does it snow in Rockvale in December?
What is the month with the shortest days in Rockvale?
What is the average length of the day in December in Rockvale?
When is the sunrise / sunset in December in Rockvale?
How many hours of sunshine does Rockvale have in December?
When is the lowest UV index in Rockvale?
What is the UV index reading in December in Rockvale?
Average temperature in December
Rockvale, CO
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in December
Rockvale, CO
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in December
Rockvale, CO
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Rockvale, CO
- Average humidity in December: 59%
The month with the highest relative humidity is February (62%).
The month with the lowest relative humidity is June (38%).
Average rainfall in December
Rockvale, CO
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days in December
Rockvale, CO
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is November (3.9 days).
Average snowfall in December
Rockvale, CO
- Average snowfall in December: 3.03"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockvale, CO
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockvale, CO
- 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: 7h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in December
Rockvale, CO
- Average sunshine days in December: 23 days
The month with the most sunshine days is November (23.8 days).
The month with the least sunshine days is July (5.1 days).
Average UV index in December
Rockvale, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Rockvale, CO
- Average cloud cover in December: 20
The months with the most cloud cover are February and April (Cloud cover 23).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in December
Rockvale, CO
- 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).
Rockvale, Colorado, USA
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