December weather forecast and climate
Portland, AR

Weather in December

The first month of the winter, December, is also a fresh month in Portland, Arkansas, with average temperature fluctuating between 41.9°F (5.5°C) and 54.5°F (12.5°C).

Temperature

In December, the average high-temperature marginally drops, from an enjoyable 62.8°F (17.1°C) in November, to a cool 54.5°F (12.5°C). The average low-temperature, in December, is 41.9°F (5.5°C).

Humidity

In December, the average relative humidity in Portland is 78%.

Rainfall

In Portland, during 12.5 rainfall days, 3.66" (93mm) of precipitation is typically accumulated. Throughout the year, in Portland, there are 158.8 rainfall days, and 40.67" (1033mm) of precipitation is accumulated.

Snowfall

In Portland snow does not fall in April through October and December.

Daylight

The month with the shortest days in Portland is December, with an average of 10h of daylight.

Sunshine

In December, the average sunshine in Portland is 5.1h.

UV index

Months with the lowest UV index in Portland, Arkansas, are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in December in Portland?

In Portland, in December, the average high-temperature is 54.5°F (12.5°C), and the average low-temperature is 41.9°F (5.5°C).

What is the average humidity in December in Portland?

The average relative humidity in December in Portland, Arkansas, is 78%.

How many days does it rain in December in Portland?

In December, the rain falls for 12.5 days. Throughout December, 3.66" (93mm) of precipitation is accumulated.

Does it snow in Portland in December?

In December, in Portland, Arkansas, it doesn't snow. November is the latest month when it typically snows.

When it does not snow in Portland?

April through October and December are months without snowfall.

What is the month with the shortest days in Portland?

The month with the shortest days is December, with an average of 10h of daylight.

How many hours of daylight does Portland have in December?

In December, the average length of the day is 10h.

How many hours of sunshine does Portland have in December?

In Portland, the average sunshine in December is 5.1h.

When is the lowest UV index in Portland?

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Portland, Arkansas.

How high is the UV index in December in Portland?

The average daily maximum UV index in December in Portland is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in December
Portland, AR

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).

[Resources]

Average pressure in December
Portland, AR

Average pressure in December - Portland, AR
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.95").

[Resources]

Average wind speed in December
Portland, AR

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).

[Resources]

Average humidity in December
Portland, AR

Average humidity in December - Portland, AR
  • Average humidity in December: 78%

Months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (67%).

[Resources]

Average rainfall in December
Portland, AR

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").

[Resources]

Average rainfall days in December
Portland, AR

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).

[Resources]

Average snowfall in December
Portland, AR

Average snowfall in December - Portland, AR
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.43").
Months with the least snowfall are April, May, June, July, August, September, October and December (0").

[Resources]

Average snowfall days in December
Portland, AR

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).
Months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Portland, AR

Average daylight in December / Average sunshine in December - Portland, AR
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 5.1h

The month with the most sunshine is June (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

[Resources]

Average sunshine days in December
Portland, AR

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).

[Resources]

Average UV index in December
Portland, AR

Average UV index in December - Portland, AR
  • Average UV index in December: 3

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

[Resources]

Average cloud cover in December
Portland, AR

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).

[Resources]

Average visibility in December
Portland, AR

Average visibility in December - Portland, AR
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]