December weather forecastTigard, OR
December
Weather in December
December ushers in the winter season in Tigard, showcasing a drastic shift from the mild November weather. It serves as the dawn of snowfall after an extended period, recording a slight 0.43" (11mm). Additionally, it bears the mantle for the year's lowest sunshine hours, limiting to just 4.2 hours a day. The city whitens under the gentle touch of first winter frost, and the Christmas decorations light up the misty nights. Despite short daylight, December holds a particular charm with its calm and serenity.Temperature
December stands out as Tigard's coldest month, with an average high-temperature of 44.1°F (6.7°C) and a low-temperature of 34.5°F (1.4°C).Humidity
The months with the highest humidity in Tigard are January, February and December, with an average relative humidity of 84%.Rainfall
December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 4.57" (116mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Tigard, in December, during 0.9 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Tigard, during the entire year, snow falls for 6.5 days and aggregates up to 3.94" (100mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:31 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:38 pm PST.
Sunshine
The average sunshine in December is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Tigard, OR
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (44.1°F).
- Average low temperature in December: 34.5°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).
Average pressure in December
Tigard, OR
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Tigard, OR
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Tigard, OR
- Average humidity in December: 84%
The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in December
Tigard, OR
- Average rainfall in December: 4.57"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Tigard, OR
- Average rainfall days in December: 18.9 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in December
Tigard, OR
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Tigard, OR
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Tigard, OR
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Tigard, OR
- Average sunshine days in December: 10.4 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in December
Tigard, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Tigard, OR
- Average cloud cover in December: 56
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in December
Tigard, OR
- Average visibility in December: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
