Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With an average high-temperature of 35.6°F (2°C) and an average low-temperature of 26.1°F (-3.3°C), December is the coldest month.Humidity
In December, the average relative humidity is 88%.Rainfall
In December, in Glacier, Washington, the rain falls for 15.4 days. Throughout December, 9.13" (232mm) of precipitation is accumulated. Throughout the year, there are 194.4 rainfall days, and 69.29" (1760mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, in Glacier, it is snowing for 11.4 days. Throughout December, 14.09" (358mm) of snow is accumulated. Throughout the year, there are 51.2 snowfall days, and 83.11" (2111mm) of snow is accumulated.Daylight
The month with the shortest days in Glacier is December, with an average of 8h and 18min of daylight.On the first day of the month, sunrise is at 7:40 am and sunset at 4:13 pm. On the last day of December, sunrise is at 8:01 am and sunset at 4:21 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 3.3h of sunshine.UV index
In Glacier, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a regular UV index of 2 translates into these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What month is the coldest in Glacier?
How cold is it in Glacier in December?
What is the average humidity in December in Glacier?
How many days does it rain in December in Glacier?
How much does it snow in Glacier in December?
What is the month with the shortest days in Glacier?
What is the average length of the day in December in Glacier?
When is the sunrise / sunset in December in Glacier?
What is the month with the least sunshine in Glacier?
How long on average sun shines in December in Glacier?
How high is the UV index in December in Glacier?
Average temperature in December
Glacier, WA
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (35.6°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in December
Glacier, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are May, June, August and September (30"Hg).
Average wind speed in December
Glacier, WA
- Average wind speed in December: 4.3mph
The windiest month (with the highest average wind speed) is January (4.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in December
Glacier, WA
- Average humidity in December: 88%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is July (74%).
Average rainfall in December
Glacier, WA
- Average rainfall in December: 9.13"
The wettest month (with the highest rainfall) is January (10.39").
The driest month (with the least rainfall) is July (1.5").
Average rainfall days in December
Glacier, WA
- Average rainfall days in December: 15.4 days
The month with the highest number of rainy days is April (21.3 days).
The month with the least rainy days is August (10.3 days).
Average snowfall in December
Glacier, WA
- Average snowfall in December: 14.09"
The month with the highest snowfall is February (22.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glacier, WA
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is December (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glacier, WA
- Average daylight in December: 8h and 2min
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: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in December
Glacier, WA
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is August (18.1 days).
The month with the least sunshine days is April (6.8 days).
Average UV index in December
Glacier, 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 and November (UV index 1).
Average cloud cover in December
Glacier, WA
- Average cloud cover in December: 64
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Glacier, WA
- Average visibility in December: 4mi
The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (4mi).
Glacier, Washington, USA
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