December weather forecastAlfalfa, WA
December
Weather in December
The first month of the winter, December, is still a cold month in Alfalfa, Washington, with an average temperature varying between 36.5°F (2.5°C) and 25.5°F (-3.6°C).Temperature
With an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 25.5°F (-3.6°C), December is the coldest month.Humidity
The average relative humidity in December is 81%.Rainfall
In Alfalfa, during December, the rain falls for 6.9 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Alfalfa, during the entire year, the rain falls for 78 days and collects up to 3.39" (86mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall. The months with the most snowfall are January, February and December, with an average 0.94" (24mm) of accumulated snow.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 7:24 am and sunset at 4:16 pm. On the last day of December, sunrise is at 7:44 am and sunset at 4:24 pm PST.
Sunshine
In Alfalfa, the average sunshine in December is 5.5h.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 estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Alfalfa, WA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure in December
Alfalfa, WA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in December
Alfalfa, WA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is December (4.8mph).
Average humidity in December
Alfalfa, WA
- Average humidity in December: 81%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).
Average rainfall in December
Alfalfa, WA
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is May (0.63").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Alfalfa, WA
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is March (9.9 days).
The months with the least rainy days are July and August (2.8 days).
Average snowfall in December
Alfalfa, WA
- Average snowfall in December: 0.94"
The months with the highest snowfall are January, February and December (0.94").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Alfalfa, WA
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is December (4.7 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Alfalfa, 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: 5h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Alfalfa, WA
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in December
Alfalfa, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Alfalfa, WA
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Alfalfa, WA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
