December weather forecastBlackfoot, ID
December
Weather in December
December in Blackfoot, Idaho, is characterized by cold temperatures and heavy snowfall. The transition from November to December brings heavier snow and lower temperatures, indicating the full-force arrival of the winter season. Visually appealing is December’s snowfall reaching up to 6.46" (164mm), offering a white blanket on city landscapes. While the temperatures become harsh, the holidays bring a warm festive spirit to the city. Residents anxiously await a white Christmas, making it a magical time despite the severe weather conditions.Temperature
December proves to be the coldest month, recording an average maximum temperature of 28.6°F (-1.9°C) and a minimum temperature of 16.7°F (-8.5°C).Humidity
In Blackfoot, the average relative humidity in December is 85%.Rainfall
In Blackfoot, in December, during 11.5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Blackfoot, during the entire year, the rain falls for 120.8 days and collects up to 10.67" (271mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, it is snowing for 16.1 days. Throughout December, 6.46" (164mm) of snow is accumulated. Throughout the year, there are 69.9 snowfall days, and 29.37" (746mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:42 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 5:04 pm MST.
Sunshine
The average sunshine in December is 5.3h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 1 during December translates into these guidelines:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Blackfoot, ID
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in December: 16.7°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Blackfoot, 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 (29.9"Hg).
Average wind speed in December
Blackfoot, ID
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in December
Blackfoot, ID
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (34%).
Average rainfall in December
Blackfoot, ID
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is March (1.22").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in December
Blackfoot, ID
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (7.3 days).
Average snowfall in December
Blackfoot, ID
- Average snowfall in December: 6.46"
The month with the highest snowfall is January (7.83").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Blackfoot, ID
- Average snowfall days in December: 16.1 days
The month with the highest number of snowfall days is December (16.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Blackfoot, 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 18min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Blackfoot, ID
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is February (10.5 days).
Average UV index in December
Blackfoot, ID
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Blackfoot, ID
- Average cloud cover in December: 46
The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in December
Blackfoot, 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 month with the lowest visibility is January (4mi).
