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
In Donnelly, December records the lowest average temperatures, peaking at 28°F (-2.2°C) and reaching a low of 15.1°F (-9.4°C).Humidity
The average relative humidity in December is 88%.Rainfall
In Donnelly, in December, it is raining for 4.6 days, with typically 2.91" (74mm) of accumulated precipitation. In Donnelly, during the entire year, the rain falls for 98.1 days and collects up to 22.64" (575mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In December, it is snowing for 16.3 days. Throughout December, 21.1" (536mm) of snow is accumulated. In Donnelly, during the entire year, snow falls for 93.8 days and aggregates up to 104.45" (2653mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year in Donnelly.On the first day of December, sunrise is at 8:02 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 8:21 am and sunset at 5:13 pm MST.
Sunshine
In Donnelly, the average sunshine in December is 4.5h.UV index
In Donnelly, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. When the Sun is at its strongest around midday, find shade and limit exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Donnelly have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, ID
- Average daylight in December: 8h and 5min
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 3min
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
Donnelly, 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
Donnelly, 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
Donnelly, 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
Donnelly, 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).
Donnelly, Idaho, USA
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