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
December, with an average high of 27.9°F (-2.3°C) and a low of 16°F (-8.9°C), signifies the coldest month of the year.Humidity
In Basalt, the average relative humidity in December is 86%.Rainfall
In Basalt, in December, during 8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, in Basalt, there are 124.6 rainfall days, and 12.24" (311mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In December, it is snowing for 16.7 days. Throughout December, 6.5" (165mm) of snow is accumulated. Throughout the year, there are 75.1 snowfall days, and 30.59" (777mm) of snow is accumulated.Daylight
December has the shortest days of the year in Basalt, with an average of 9h and 0min of daylight.On the first day of December in Basalt, sunrise is at 7:41 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:03 pm MST.
Sunshine
In December, the average sunshine is 5.1h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Basalt. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Basalt?
How cold is December in Basalt?
What is the average humidity in December in Basalt?
How much does it rain in Basalt in December?
How much does it snow in Basalt in December?
What is the month with the shortest days in Basalt?
How many hours of daylight does Basalt have in December?
When are sunrise and sunset in December in Basalt?
How long on average sun shines in December in Basalt?
What is the month with the lowest UV index in Basalt?
What is the UV index reading in December in Basalt?
Average temperature in December
Basalt, ID
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in December
Basalt, ID
- Average pressure in December: 30.26"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Basalt, ID
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is January (6mph).
Average humidity in December
Basalt, ID
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in December
Basalt, ID
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in December
Basalt, ID
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in December
Basalt, ID
- Average snowfall in December: 6.5"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Basalt, ID
- Average snowfall days in December: 16.7 days
The month with the highest number of snowfall days is December (16.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Basalt, ID
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Basalt, ID
- Average sunshine days in December: 13 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is March (10 days).
Average UV index in December
Basalt, 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 and December (UV index 1).
Average cloud cover in December
Basalt, ID
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in December
Basalt, ID
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Basalt, Idaho, USA
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