December weather forecastNighthawk, WA
December
Weather in December
December, the first month of the winter in Nighthawk, is still a freezing cold month, with an average temperature fluctuating between 27°F (-2.8°C) and 13.1°F (-10.5°C).Temperature
In Nighthawk, the lowest average temperatures are observed in December, with a high of 27°F (-2.8°C) and a low of 13.1°F (-10.5°C).Humidity
The average relative humidity in December is 92%.Rainfall
In Nighthawk, in December, during 5.7 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 112.2 rainfall days, and 14.69" (373mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Nighthawk. December is the month with the most snowfall in Nighthawk. Snow falls for 17.3 days and accumulates 9.76" (248mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 18min of daylight.On the first day of December in Nighthawk, sunrise is at 7:32 am and sunset at 4:03 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:11 pm PST.
Sunshine
In Nighthawk, Washington, the average sunshine in December is 4.3h.UV index
The months with the lowest UV index in Nighthawk are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 1 in December translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Boost your sun resistance with garments that are densely woven yet spacious. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Nighthawk, WA
- Average high temperature in December: 27°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in December
Nighthawk, WA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed in December
Nighthawk, WA
- Average wind speed in December: 3.7mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest months (with the lowest average wind speed) are January, February and December (3.7mph).
Average humidity in December
Nighthawk, WA
- Average humidity in December: 92%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Nighthawk, WA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is August (0.47").
Average rainfall days in December
Nighthawk, WA
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (5.7 days).
Average snowfall in December
Nighthawk, WA
- Average snowfall in December: 9.76"
The month with the highest snowfall is December (9.76").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Nighthawk, WA
- Average snowfall days in December: 17.3 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Nighthawk, WA
- Average daylight in December: 8h and 18min
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 18min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Nighthawk, WA
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is March (10.8 days).
Average UV index in December
Nighthawk, WA
- Average UV index in December: 1
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 1).
Average cloud cover in December
Nighthawk, WA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Nighthawk, WA
- Average visibility in December: 3mi
The months with the highest visibility are April, May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
