December weather forecastBow, WA
December
Weather in December
December, the first month of the winter in Bow, is also a wintry month, with an average temperature varying between 36.3°F (2.4°C) and 42.6°F (5.9°C).Temperature
With average high and low temperatures of 42.6°F (5.9°C) and 36.3°F (2.4°C) respectively, December is Bow's coldest month.Humidity
The average relative humidity in December is 82%.Rainfall
In Bow, in December, it is raining for 19.5 days, with typically 4.06" (103mm) of accumulated precipitation. Throughout the year, there are 185.2 rainfall days, and 34.72" (882mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Bow, during December, snow falls for 1.5 days and regularly aggregates up to 0.47" (12mm) of snow. In Bow, Washington, during the entire year, snow falls for 9.9 days and aggregates up to 7.91" (201mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 24min of daylight.On the first day of December, sunrise is at 7:41 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 4:24 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 3.9h of sunshine.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 of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bow, WA
- Average high temperature in December: 42.6°F
The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in December: 36.3°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).
Average pressure in December
Bow, WA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in December
Bow, WA
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Bow, WA
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in December
Bow, WA
- Average rainfall in December: 4.06"
The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in December
Bow, WA
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).
Average snowfall in December
Bow, WA
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Bow, WA
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Bow, WA
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in December
Bow, WA
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).
Average UV index in December
Bow, 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
Bow, WA
- Average cloud cover in December: 59
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Bow, WA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
