December weather forecastGlenoma, WA
December
Weather in December
December, the first month of the winter in Glenoma, is also a wintry month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 41.2°F (5.1°C).Temperature
Glenoma reaches its lowest average temperatures in December, measuring 41.2°F (5.1°C) at the peak and 30.7°F (-0.7°C) at the lowest.Humidity
In December, the average relative humidity is 87%.Rainfall
In December, the rain falls for 17.5 days. Throughout December, 5.83" (148mm) of precipitation is accumulated. Throughout the year, there are 178.8 rainfall days, and 40.47" (1028mm) of precipitation is accumulated.Snowfall
Months with snowfall in Glenoma are January through April, November and December. In Glenoma, in December, during 3.5 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Glenoma, Washington, during the entire year, snow falls for 20 days and aggregates up to 17.24" (438mm) of snow.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year in Glenoma, Washington.On the first day of December, sunrise is at 7:32 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:31 pm PST.
Sunshine
In Glenoma, the average sunshine in December is 3.9h.UV index
In December, the average daily maximum UV index in Glenoma, Washington, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Boost your sun resistance with garments that are densely woven yet spacious. 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
Glenoma, WA
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in December
Glenoma, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Glenoma, WA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in December
Glenoma, WA
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Glenoma, WA
- Average rainfall in December: 5.83"
The wettest month (with the highest rainfall) is January (6.46").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Glenoma, WA
- Average rainfall days in December: 17.5 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.3 days).
Average snowfall in December
Glenoma, WA
- Average snowfall in December: 1.77"
The month with the highest snowfall is January (5.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Glenoma, WA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Glenoma, WA
- Average daylight in December: 8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).
Average sunshine days in December
Glenoma, WA
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in December
Glenoma, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Glenoma, WA
- Average cloud cover in December: 60
The month with the most cloud cover is March (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Glenoma, WA
- Average visibility in December: 4mi
The months with the highest visibility are July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (4mi).
