December weather forecastMesa, ID
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Mesa, Idaho, with an average temperature fluctuating between 28°F (-2.2°C) and 15.1°F (-9.4°C).Temperature
December, with an average high of 28°F (-2.2°C) and a low of 15.1°F (-9.4°C), signifies the coldest month of the year.Humidity
In December, the average relative humidity is 88%.Rainfall
In Mesa, during December, the rain falls for 4.6 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Mesa, during the entire year, the rain falls for 98.1 days and collects up to 22.64" (575mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Mesa. In Mesa, in December, during 16.3 snowfall days, 21.1" (536mm) of snow is typically accumulated. Throughout the year, there are 93.8 snowfall days, and 104.45" (2653mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 8:03 am and sunset at 5:06 pm. On the last day of December, sunrise is at 8:22 am and sunset at 5:15 pm MST.
Sunshine
In Mesa, the average sunshine in December is 4.5h.UV index
In Mesa, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mesa, ID
- Average high temperature in December: 28°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in December
Mesa, ID
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Mesa, ID
- Average wind speed in December: 4.5mph
The windiest months (with the highest average wind speed) are March and April (5.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in December
Mesa, ID
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (42%).
Average rainfall in December
Mesa, ID
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is March (3.31").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Mesa, ID
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in December
Mesa, ID
- Average snowfall in December: 21.1"
The month with the highest snowfall is January (23.07").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Mesa, ID
- Average snowfall days in December: 16.3 days
The month with the highest number of snowfall days is March (17 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Mesa, ID
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Mesa, ID
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is March (10.1 days).
Average UV index in December
Mesa, ID
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Mesa, ID
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Mesa, 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).
