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
The onset of December entails a subtle temperature shift, as the average high-temperature eases from an enjoyable 62.8°F (17.1°C) in November to a cool 54.5°F (12.5°C). Portland's nighttime temperature in December falls to an average of 41.9°F (5.5°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Portland, in December, during 12.5 rainfall days, 3.66" (93mm) of precipitation is typically accumulated. In Portland, during the entire year, the rain falls for 158.8 days and collects up to 40.67" (1033mm) of precipitation.Snowfall
April through October and December are months without snowfall in Portland, Arkansas.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year in Portland.On the first day of December in Portland, sunrise is at 6:52 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:09 pm CST.
Sunshine
In December, the average sunshine is 5.1h.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 3 in December translates into this advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the average December temperature in Portland?
What is the average humidity in December in Portland?
How much does it rain in Portland in December?
When it does not snow in Portland?
Does it snow in Portland in December?
What is the month with the shortest days in Portland?
What is the average length of the day in December in Portland?
What time are sunrise and sunset in December in Portland?
How long on average sun shines in December in Portland?
What is the month with the lowest UV index in Portland?
How high is the UV index in December in Portland?
Average temperature in December
Portland, AR
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (51.6°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in December
Portland, 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 (29.95"Hg).
Average wind speed in December
Portland, AR
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Portland, AR
- Average humidity in December: 78%
The months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Portland, AR
- Average rainfall in December: 3.66"
The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is November (2.44").
Average rainfall days in December
Portland, AR
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (9.3 days).
Average snowfall in December
Portland, AR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Portland, AR
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Portland, AR
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Portland, AR
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (12 days).
Average UV index in December
Portland, AR
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Portland, AR
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Portland, AR
- 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).
Portland, Arkansas, USA
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