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
A mild shift in the average high-temperature occurs in December, reducing from a moderate 60.4°F (15.8°C) in November to a cool 52.5°F (11.4°C). Rolla reports an average nighttime low-temperature of 37.2°F (2.9°C) in December.Humidity
In Rolla, the average relative humidity in December is 79%.Rainfall
In Rolla, in December, it is raining for 12 days, with typically 3.58" (91mm) of accumulated precipitation. Throughout the year, there are 166 rainfall days, and 39.21" (996mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Rolla, in December, during 0.5 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Rolla, during the entire year, snow falls for 4.6 days and aggregates up to 1.89" (48mm) of snow.Daylight
December has the shortest days of the year in Rolla, with an average of 9h and 54min of daylight.On the first day of December in Rolla, sunrise is at 6:59 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:11 pm CST.
Sunshine
In December, the average sunshine is 5.3h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Rolla. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Rolla?
What is the average humidity in December in Rolla?
How much does it rain in Rolla in December?
How many days does it snow in December in Rolla?
What is the month with the shortest days in Rolla?
How many hours of daylight does Rolla have in December?
When is the sunrise / sunset in December in Rolla?
How long on average sun shines in December in Rolla?
When is the lowest UV index in Rolla?
What is the UV index reading in December in Rolla?
Average temperature in December
Rolla, AR
- Average high temperature in December: 52.5°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 37.2°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in December
Rolla, AR
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Rolla, AR
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Rolla, AR
- Average humidity in December: 79%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are July, September and October (72%).
Average rainfall in December
Rolla, AR
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is April (4.53").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in December
Rolla, AR
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in December
Rolla, AR
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Rolla, AR
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.8 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
Rolla, AR
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in December
Rolla, AR
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is January (18.6 days).
The month with the least sunshine days is August (10 days).
Average UV index in December
Rolla, AR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Rolla, AR
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Rolla, AR
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are May and December (5mi).
Rolla, Arkansas, USA
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