December weather forecast and climate
Portland, ND

December, the first month of the winter, in Portland, is still a freezing cold month, with average temperature varying between 8.6°F (-13°C) and 19.8°F (-6.8°C).

Temperature

In December, the average high-temperature declines considerably, from a cold 36°F (2.2°C) in November, to a subzero cold 19.8°F (-6.8°C). In December, the average low-temperature is 8.6°F (-13°C).

Humidity

In December, the average relative humidity in Portland is 88%.

Rainfall

In Portland, in December, it is raining for 3.2 days, with typically 0.79" (20mm) of accumulated precipitation. In Portland, during the entire year, the rain falls for 101.8 days and collects up to 18.23" (463mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Portland. The month with the most snowfall in Portland, North Dakota, is December when snow falls for 14 days and typically aggregates up to 4.25" (108mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8.5h of daylight.

Sunshine

In December, the average sunshine is 3.4h.

UV index

The average daily maximum UV index in Portland, North Dakota, is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Portland?

In Portland, in December, the average high-temperature is 19.8°F (-6.8°C), and the average low-temperature is 8.6°F (-13°C).

What is the average humidity in December in Portland?

In Portland, North Dakota, the average relative humidity in December is 88%.

How much does it rain in Portland in December?

In Portland, North Dakota, in December, it is raining for 3.2 days, with typically 0.79" (20mm) of accumulated precipitation.

How much does it snow in Portland in December?

In Portland, North Dakota, in December, snow falls for 14 days, with typically accumulated 4.25" (108mm) of snow.

When does it snow the most in Portland?

December is the month with the most snowfall in Portland. Snow falls for 14 days and accumulates 4.25" (108mm) of snow.

What is the month with the shortest days in Portland?

The month with the shortest days in Portland, North Dakota, is December, with an average of 8.5h of daylight.

How many hours of daylight does Portland have in December?

In Portland, North Dakota, the average length of the day in December is 8.5h.

How many hours of sunshine does Portland have in December?

In December, the average sunshine is 3.4h.

How high is the UV index in December in Portland?

In December, the average daily maximum UV index in Portland is 2. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.
Average temperature in December - Portland, ND
  • Average high temperature in December: -6.8°C

The warmest months (with the highest average high temperature) are July and August (26.9°C).
The month with the lowest average high temperature is January (-9.1°C).

  • Average low temperature in December: -13°C

The month with the highest average low temperature is July (15.7°C).
The coldest month (with the lowest average low temperature) is January (-16.8°C).

Average pressure in December - Portland, ND
  • Average pressure in December: 1020.2mbar

The month with the highest atmospheric pressure is February (1021.7mbar).
The month with the lowest atmospheric pressure is June (1011.1mbar).

Average wind speed in December - Portland, ND
  • Average wind speed in December: 16.1km/h

The windiest month (with the highest average wind speed) is October (17.6km/h).
The calmest month (with the lowest average wind speed) is July (13.3km/h).

Average humidity in December - Portland, ND
  • Average humidity in December: 88%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (61%).

Average rainfall in December - Portland, ND
  • Average rainfall in December: 20mm

The wettest month (with the highest rainfall) is June (89mm).
The driest months (with the least rainfall) are January and February (14mm).

Average rainfall days in December - Portland, ND
  • Average rainfall days in December: 3.2 days

The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in December - Portland, ND
  • Average snowfall in December: 108mm

The month with the highest snowfall is December (108mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December - Portland, ND
  • Average snowfall days in December: 14 days

The month with the highest number of snowfall days is December (14 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Portland, ND
  • Average daylight in December: 8.5h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in December: 3.4h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 3.3h).

Average sunshine days in December - Portland, ND
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in December - Portland, ND
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February and November (UV index 1).

Average cloud cover in December - Portland, ND
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in December - Portland, ND
  • Average visibility in December: 8km

Months with the highest visibility are May, August and September (10km).
Months with the lowest visibility are January, February, March and December (8km).