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
Robertson's December weather reaches an average high of 26.6°F (-3°C) and an average low of 12.6°F (-10.8°C), making it the coldest month.Humidity
The average relative humidity in December is 80%.Rainfall
In Robertson, Wyoming, in December, it is raining for 8.3 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, in Robertson, there are 112.2 rainfall days, and 11.57" (294mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In Robertson, Wyoming, in December, during 13.3 snowfall days, 5.79" (147mm) of snow is typically accumulated. In Robertson, during the entire year, snow falls for 85.7 days and aggregates up to 41.18" (1046mm) of snow.Daylight
The month with the shortest days in Robertson is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:46 am and sunset at 5:03 pm MST.
Sunshine
With an average of 6.4h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Robertson are January through April, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What are the coldest months in Robertson?
How cold is December in Robertson?
What is the average humidity in December in Robertson?
How much does it rain in Robertson in December?
How much does it snow in Robertson in December?
What is the month with the shortest days in Robertson?
What is the average length of the day in December in Robertson?
When is the sunrise / sunset in December in Robertson?
What is the month with the least sunshine in Robertson?
How long on average sun shines in December in Robertson?
What is the month with the lowest UV index in Robertson?
What is the UV index reading in December in Robertson?
Average temperature in December
Robertson, WY
- Average high temperature in December: 26.6°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (26.6°F).
- Average low temperature in December: 12.6°F
The month with the highest average low temperature is July (55.6°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in December
Robertson, WY
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Robertson, WY
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Robertson, WY
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in December
Robertson, WY
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are January and July (0.63").
Average rainfall days in December
Robertson, WY
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is November (6 days).
Average snowfall in December
Robertson, WY
- Average snowfall in December: 5.79"
The month with the highest snowfall is March (8.78").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Robertson, WY
- Average snowfall days in December: 13.3 days
The month with the highest number of snowfall days is March (15.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Robertson, WY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in December
Robertson, WY
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is April (9.4 days).
Average UV index in December
Robertson, WY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Robertson, WY
- Average cloud cover in December: 33
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Robertson, WY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Robertson, Wyoming, USA
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