December weather forecastRosburg, WA
December
Weather in December
December, the first month of the winter in Rosburg, is also a frosty month, with an average temperature varying between 37.6°F (3.1°C) and 44.6°F (7°C).Temperature
Rosburg's coldest temperatures are experienced in December, with average high temperatures of 44.6°F (7°C) and lows of 37.6°F (3.1°C).Humidity
The months with the highest humidity are January, February, November and December, with an average relative humidity of 85%.Rainfall
The month with the most rainfall is December, when the rain falls for 21.9 days and typically aggregates up to 6.42" (163mm) of precipitation.Snowfall
January through March and December are months with snowfall in Rosburg. December is the first month it typically snows in Rosburg. Throughout December, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 3.4 snowfall days, and 2.05" (52mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:38 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:57 am and sunset at 4:38 pm PST.
Sunshine
In December, the average sunshine is 4h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rosburg, WA
- Average high temperature in December: 44.6°F
The warmest month (with the highest average high temperature) is August (68.2°F).
The month with the lowest average high temperature is December (44.6°F).
- Average low temperature in December: 37.6°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in December
Rosburg, WA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March and September (30.02"Hg).
Average wind speed in December
Rosburg, WA
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Rosburg, WA
- Average humidity in December: 85%
The months with the highest relative humidity are January, February, November and December (85%).
The months with the lowest relative humidity are May and July (81%).
Average rainfall in December
Rosburg, WA
- Average rainfall in December: 6.42"
The wettest month (with the highest rainfall) is December (6.42").
The driest months (with the least rainfall) are July and August (0.55").
Average rainfall days in December
Rosburg, WA
- Average rainfall days in December: 21.9 days
The month with the highest number of rainy days is December (21.9 days).
The month with the least rainy days is August (7.8 days).
Average snowfall in December
Rosburg, WA
- Average snowfall in December: 0.04"
The months with the highest snowfall are January and February (0.87").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Rosburg, WA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.4 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
Rosburg, WA
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Rosburg, WA
- Average sunshine days in December: 8.2 days
The month with the most sunshine days is August (19.7 days).
The month with the least sunshine days is February (7.2 days).
Average UV index in December
Rosburg, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Rosburg, WA
- Average cloud cover in December: 58
The months with the most cloud cover are January and February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Rosburg, WA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
