December weather forecastJuliaetta, ID
December
Weather in December
December, the first month of the winter in Juliaetta, is still a cold month, with an average temperature fluctuating between 24.1°F (-4.4°C) and 34°F (1.1°C).Temperature
December, with an average high of 34°F (1.1°C) and a low of 24.1°F (-4.4°C), signifies the coldest month of the year.Humidity
In Juliaetta, Idaho, the average relative humidity in December is 86%.Rainfall
December is the month with the most rainfall. Rain falls for 11.6 days and accumulates 2.68" (68mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Juliaetta, during December, snow falls for 14.1 days and regularly aggregates up to 11.14" (283mm) of snow. Throughout the year, there are 60.2 snowfall days, and 47.24" (1200mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 36min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:01 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:09 pm PST.
Sunshine
January, February and December, with an average of 4.5h of sunshine, are months with the least sunshine.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Juliaetta, ID
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (34°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is August (58.1°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure in December
Juliaetta, ID
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Juliaetta, ID
- Average wind speed in December: 5.6mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in December
Juliaetta, ID
- Average humidity in December: 86%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Juliaetta, ID
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is December (2.68").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days in December
Juliaetta, ID
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is April (18.1 days).
The months with the least rainy days are July and August (5.9 days).
Average snowfall in December
Juliaetta, ID
- Average snowfall in December: 11.14"
The month with the highest snowfall is January (12.56").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Juliaetta, ID
- Average snowfall days in December: 14.1 days
The month with the highest number of snowfall days is December (14.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Juliaetta, ID
- 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: 4h and 30min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 30min).
Average sunshine days in December
Juliaetta, ID
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in December
Juliaetta, ID
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Juliaetta, ID
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in December
Juliaetta, ID
- Average visibility in December: 4mi
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 December (4mi).
