Portland Weather in December: Temperature, Precipitation, Wind
December weather in Portland, United States is cold, with an average temperature of 7.8°C (46°F). Daily highs reach an average of 10.5°C (51°F), while overnight lows drop down to an average of 5.2°C (41°F). Temperatures can feel slightly cooler than forecasted, averaging 6.3°C (43.3°F).
What is the temperature in Portland in December?
Average air temperature in Portland is 7.8°C (46°F) in December. The outside temperature in Portland feels like 6.3°C (43.4°F) on a typical December day. The highest average temperature during sunny days is 10.5°C (50.8°F) and feels like 9.7°C (49.4°F). The lowest average temperature after dark is 5.2°C (41.3°F) which feels like 3.1°C (37.6°F).
How hot is Portland in December?
The hot temperature in December in Portland rises to 19.3°C (66.7°F) on sunny days with low cloud coverage and 78.9% humidity. During hottest days of December it feels like 19.3 °C (66.7°F). The average maximum temp in Portland is 10.5°C (66.7°F) during day time in December.
How cold is Portland in December?
The coldest temp in Portland in December drops to -0.3°C (31.5°F) during the cold nights. With 21.1km/h (13.1mph) winds and 78.9% humidity it feels like -3.2°C (26.2°F) on the coldest nights. The average minimum temperature is 5.2°C (41.3°F) during night time in December.
Does it rain in Portland in December?
Yes, it rains for 22 days in Portland, United States in December averaging 6.91 mm of precipitation. Portland has a 71% chance for rain throughout the entire month of December.
How much does it rain in Portland throughout December?
Portland has 6.91 mm (0.27 inch) of rain per day on average in December. It rains for an average of 22 days out of the entire month.
Is Portland windy in December?
The average speed of wind in Portland, United States during December is 21.1km/h (13.1mph) and average windgust is 49km/h (30.4mph). On some days in December wind can reach up to 36.7km/h (22.8mph).
What is the direction of the wind in Portland in December?
Most days of December the wind is blowing from South-Southeast direction in Portland.
What are the humidity levels in Portland in December?
The average humidity levels in Portland in December are 78.9%. Daily humidity levels in Portland range from 58.2% to 90.9% during December.
How many hours of daylight are in Portland in December?
Portland has 8 hours 46 minutes of daylight in December on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Portland in December is at 7:43:19 and the sunset is at 16:29:40.
What is the cloud coverage in Portland in December?
Clouds cover 77.1% of the sky on average throughout December in Portland. The cloud coverage ranges from 18.3% to 100% depending on the day of the month.
What is the UV level in December in Portland?
The average UV index in Portland is 0.9 in December. UV levels change throughout the month and range from 0 to 3.
What is the solar radiation in Portland in December?
The average solar radiation is 13.9 W/m2 (Watts per square meter) in Portland during December. However solar radiation levels change throughout the month and range from 4.6 W/m2 to 30 W/m2.
What is the solar energy during December in Portland?
The average solar energy during December in Portland is 1.2 MJ/m2 (megajoules per square metre). Solar energy ranges from 0.4 MJ/m2, to 2.7 MJ/m2 during December.
Are there severe weather risks in Portland in December?
Yes, there is a 10% risk for severe weather in Portland, United States in December.
What is the air pressure in Portland in December?
On average the air pressure in Portland in December is 1017.6 mb (millibars). Throughout the month the sea level pressure ranges from 1003 mb to 1028.3 mb.
What is the visibility in Portland in December?
The average daylight visibility in Portland in December is 13.3 km (8.3 miles). Depending on the precipitation the visibility ranges from 6.5 km (4 miles) to 16 km (9.9 miles) throughout December.
What is the dew point in Portland in December?
The average dew point in Portland during December is 4.2°C (39.6°F).
Where is the data for Portland climate in December coming from?
The climate data for Portland, Oregon, United States in December is collected from the following weather stations.
- PORTLAND INTERNATIONAL AIRPORT, OR US
- PORTLAND TROUTDALE AIRPORT, OR US
- VANCOUVER PEARSON AIRPORT, WA US
- DW6016 Milwaukie OR US
- FW8831 Portland OR US
- KPDX
- KTTD
- KVUO