December weather forecastOkanogan, WA
December
Weather in December
December, the first month of the winter in Okanogan, is also a subzero cold month, with an average temperature ranging between min 18.1°F (-7.7°C) and max 30.4°F (-0.9°C).Temperature
December, known for its average high temperature of 30.4°F (-0.9°C) and an average low temperature of 18.1°F (-7.7°C), is the coldest month.Humidity
The average relative humidity in December is 87%.Rainfall
December is the month with the most rainfall. Rain falls for 6.9 days and accumulates 0.94" (24mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Okanogan. In December, in Okanogan, Washington, it is snowing for 8.4 days. Throughout December, 3.27" (83mm) of snow is accumulated. Throughout the year, there are 25.5 snowfall days, and 10.12" (257mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 7:29 am and sunset at 4:05 pm. On the last day of December, in Okanogan, sunrise is at 7:49 am and sunset at 4:13 pm PST.
Sunshine
In Okanogan, the average sunshine in December is 5h.UV index
In Okanogan, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Okanogan, WA
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in December
Okanogan, WA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed in December
Okanogan, WA
- Average wind speed in December: 4.2mph
The windiest month (with the highest average wind speed) is April (5.1mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in December
Okanogan, WA
- Average humidity in December: 87%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are July and August (42%).
Average rainfall in December
Okanogan, WA
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is December (0.94").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in December
Okanogan, WA
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is March (11.5 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in December
Okanogan, WA
- Average snowfall in December: 3.27"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Okanogan, WA
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is December (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Okanogan, WA
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Okanogan, WA
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is November (15.4 days).
Average UV index in December
Okanogan, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Okanogan, WA
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in December
Okanogan, WA
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
