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
De Smet's December weather, marked by an average high temperature of 31.8°F (-0.1°C) and an average low temperature of 21.2°F (-6°C), is the coldest in the year.Humidity
The average relative humidity in December is 90%.Rainfall
In December, the rain falls for 10.7 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In De Smet, during the entire year, the rain falls for 145.2 days and collects up to 25.12" (638mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In De Smet, in December, snow falls for 16.3 days, with typically accumulated 13.39" (340mm) of snow. Throughout the year, there are 70.2 snowfall days, and 59.69" (1516mm) of snow is accumulated.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:14 am and sunset at 3:59 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:08 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 3.5h 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 ordinary individuals.Note: In December, a daily UV index of 1 turns into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does De Smet have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
De Smet, ID
- Average high temperature in December: 31.8°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (31.8°F).
- Average low temperature in December: 21.2°F
The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).
Average pressure in December
De Smet, 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 (29.92"Hg).
Average wind speed in December
De Smet, ID
- Average wind speed in December: 4.1mph
The windiest month (with the highest average wind speed) is April (5mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).
Average humidity in December
De Smet, ID
- Average humidity in December: 90%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
De Smet, ID
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is January (3.66").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
De Smet, ID
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is April (18.7 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in December
De Smet, ID
- Average snowfall in December: 13.39"
The month with the highest snowfall is January (16.22").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
De Smet, ID
- Average snowfall days in December: 16.3 days
The month with the highest number of snowfall days is December (16.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
De Smet, ID
- Average daylight in December: 8h and 4min
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 36min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 3h and 30min).
Average sunshine days in December
De Smet, ID
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is July (25.2 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in December
De Smet, ID
- 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
De Smet, ID
- Average cloud cover in December: 63
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
De Smet, ID
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
De Smet, Idaho, USA
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