December weather forecastSilverton, ID
December
Weather in December
December, the first month of the winter in Silverton, is also a subzero cold month, with temperature in the range of an average low of 19.2°F (-7.1°C) and an average high of 30°F (-1.1°C).Temperature
Silverton experiences its lowest average temperatures in December, reaching a peak of 30°F (-1.1°C) and a minimum of 19.2°F (-7.1°C).Humidity
In December, the average relative humidity is 91%.Rainfall
In Silverton, Idaho, in December, it is raining for 7.2 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 128.7 rainfall days, and 24.65" (626mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Silverton, in December, snow falls for 15.8 days, with typically accumulated 12.72" (323mm) of snow. Throughout the year, there are 74.7 snowfall days, and 63.27" (1607mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 7:11 am and sunset at 3:54 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:02 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 3.2h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Enhance your sun protection with tightly woven, yet airy clothing. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Silverton, ID
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (30°F).
- Average low temperature in December: 19.2°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).
Average pressure in December
Silverton, ID
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed in December
Silverton, ID
- Average wind speed in December: 4.2mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest months (with the lowest average wind speed) are September and December (4.2mph).
Average humidity in December
Silverton, ID
- Average humidity in December: 91%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in December
Silverton, ID
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is January (3.07").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in December
Silverton, ID
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is April (17.3 days).
The month with the least rainy days is July (6 days).
Average snowfall in December
Silverton, ID
- Average snowfall in December: 12.72"
The month with the highest snowfall is January (16.5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Silverton, ID
- Average snowfall days in December: 15.8 days
The month with the highest number of snowfall days is December (15.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Silverton, ID
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in December
Silverton, ID
- Average sunshine days in December: 12 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (9.3 days).
Average UV index in December
Silverton, ID
- Average UV index in December: 1
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 1).
Average cloud cover in December
Silverton, ID
- Average cloud cover in December: 67
The months with the most cloud cover are January, February and December (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in December
Silverton, ID
- Average visibility in December: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
