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 transition from November to December brings a clear temperature drop, with average high-temperatures decreasing from a wintry 36°F (2.2°C) to a freezing cold 19.8°F (-6.8°C). The nighttime temperature in Portland, North Dakota, during December, averages of 8.6°F (-13°C).Humidity
In December, the average relative humidity in Portland is 88%.Rainfall
In December, in Portland, North Dakota, the rain falls for 3.2 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. 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 is December, when snow falls for 14 days and typically aggregates up to 4.25" (108mm) of snow.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:57 am and sunset at 4:40 pm. On the last day of December, sunrise is at 8:17 am and sunset at 4:48 pm CST.
Sunshine
The average sunshine in December in Portland is 3.4h.UV index
The average daily maximum UV index in December in Portland, North Dakota, is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Portland?
What is the average humidity in December in Portland?
How much does it rain in Portland in December?
What is the snowiest month in Portland?
How many days does it snow in December in Portland?
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 UV index reading in December in Portland?
Average temperature in December
Portland, ND
- Average high temperature in December: 19.8°F
The warmest months (with the highest average high temperature) are July and August (80.4°F).
The month with the lowest average high temperature is January (15.6°F).
- Average low temperature in December: 8.6°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (1.8°F).
Average pressure in December
Portland, ND
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Portland, ND
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
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: 0.79"
The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (0.55").
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: 4.25"
The month with the highest snowfall is December (4.25").
The months with the least snowfall are June, July, August and September (0").
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).
The 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: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
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
The months with the highest UV index are June and July (UV index 6).
The 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: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Portland, North Dakota, USA
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