December weather forecastBarlow, OR
December
Weather in December
December, the first month of the winter in Barlow, is still a chilly month, with an average temperature ranging between min 34.3°F (1.3°C) and max 44.2°F (6.8°C).Temperature
In Barlow, December is the coldest month, with temperatures averaging a high of 44.2°F (6.8°C) and a low of 34.3°F (1.3°C).Humidity
January, February and December, with an average relative humidity of 85%, are the most humid months.Rainfall
December is the month with the most rainfall. Rain falls for 19.4 days and accumulates 4.49" (114mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Barlow, in December, during 0.8 snowfall days, 0.47" (12mm) of snow is typically accumulated. In Barlow, during the entire year, snow falls for 6.1 days and aggregates up to 3.66" (93mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:30 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:38 pm PST.
Sunshine
In Barlow, the average sunshine in December is 4.3h.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 health risk from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Barlow, OR
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in December: 34.3°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in December
Barlow, OR
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Barlow, OR
- Average wind speed in December: 5.3mph
The windiest months (with the highest average wind speed) are January and February (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Barlow, OR
- Average humidity in December: 85%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is August (65%).
Average rainfall in December
Barlow, OR
- Average rainfall in December: 4.49"
The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in December
Barlow, OR
- Average rainfall days in December: 19.4 days
The month with the highest number of rainy days is March (20.9 days).
The months with the least rainy days are July and August (4.4 days).
Average snowfall in December
Barlow, OR
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Barlow, OR
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.1 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
Barlow, 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 18min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Barlow, OR
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in December
Barlow, 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
Barlow, OR
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Barlow, 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).
