December weather forecastMountain Home, ID
December
Weather in December
December in Mountain Home, Idaho, USA heralds the arrival of winter. The average high and low temperatures are 36.9°F (2.7°C) and 25.9°F (-3.4°C) respectively, making it the coldest month of the year. Stepping up on November's snowfall, December witnesses a significant 4.06" (103mm). Frosty mornings, freezing temperatures, and a festive atmosphere mark the final month of the year, rounding off the climatic cycle in a beautiful wintry wrap.Temperature
Mountain Home witnesses the coldest weather in December, with temperatures averaging a high of 36.9°F (2.7°C) and a low of 25.9°F (-3.4°C).Humidity
In December, the average relative humidity is 74%.Rainfall
December is the month with the most rainfall in Mountain Home. Rain falls for 9.4 days and accumulates 1.3" (33mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is December, when snow falls for 7.1 days and typically aggregates up to 4.06" (103mm) of snow.Daylight
The month with the shortest days in Mountain Home is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:55 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 5:17 pm MST.
Sunshine
With an average of 6.2h of sunshine, December has the least sunshine of the year in Mountain Home.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mountain Home, ID
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is December (36.9°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is December (25.9°F).
Average pressure in December
Mountain Home, ID
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Mountain Home, ID
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in December
Mountain Home, ID
- Average humidity in December: 74%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is July (25%).
Average rainfall in December
Mountain Home, ID
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in December
Mountain Home, ID
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (2 days).
Average snowfall in December
Mountain Home, ID
- Average snowfall in December: 4.06"
The month with the highest snowfall is December (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mountain Home, ID
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is December (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mountain Home, ID
- Average daylight in December: 9h and 6min
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 6min).
- Average sunshine in December: 6h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Mountain Home, ID
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (14.9 days).
Average UV index in December
Mountain Home, ID
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Mountain Home, ID
- Average cloud cover in December: 34
The month with the most cloud cover is December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in December
Mountain Home, ID
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
