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
Roberts experiences its lowest temperatures in December, with an average peak of 27.1°F (-2.7°C) and a low of 14.9°F (-9.5°C).Humidity
The average relative humidity in December is 87%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. In Roberts, during the entire year, the rain falls for 112.3 days and collects up to 10.94" (278mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Roberts. In Roberts, in December, during 17.1 snowfall days, 6.22" (158mm) of snow is typically accumulated. Throughout the year, there are 79 snowfall days, and 31.54" (801mm) of snow is accumulated.Daylight
December has the shortest days of the year in Roberts, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:43 am and sunset at 4:52 pm. On the last day of December, sunrise is at 8:02 am and sunset at 5:01 pm MST.
Sunshine
In Roberts, the average sunshine in December is 5.1h.UV index
The months with the lowest UV index in Roberts are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What is the coldest time of year in Roberts?
How cold is December in Roberts?
What is the average humidity in December in Roberts?
How many days does it rain in December in Roberts?
How many days does it snow in December in Roberts?
What is the month with the shortest days in Roberts?
How many hours of daylight does Roberts have in December?
When are sunrise and sunset in December in Roberts?
How many hours of sunshine does Roberts have in December?
What is the month with the lowest UV index in Roberts?
What is the UV index reading in December in Roberts?
Average temperature in December
Roberts, ID
- Average high temperature in December: 27.1°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in December: 14.9°F
The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in December
Roberts, ID
- Average pressure in December: 30.26"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Roberts, ID
- Average wind speed in December: 5.1mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in December
Roberts, ID
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (37%).
Average rainfall in December
Roberts, ID
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Roberts, ID
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is April (14.2 days).
The month with the least rainy days is July (5.8 days).
Average snowfall in December
Roberts, ID
- Average snowfall in December: 6.22"
The month with the highest snowfall is January (8.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Roberts, ID
- Average snowfall days in December: 17.1 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Roberts, ID
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h and 1min
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 42min).
Average sunshine days in December
Roberts, ID
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in December
Roberts, ID
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Roberts, ID
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in December
Roberts, ID
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Roberts, Idaho, USA
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