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
December is the coldest month in Mills, Wyoming, with the temperature often reaching an average high of 28.4°F (-2°C) and an average low of 15.1°F (-9.4°C).Humidity
In Mills, Wyoming, the average relative humidity in December is 77%.Rainfall
In Mills, Wyoming, during December, the rain falls for 4.1 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Mills, Wyoming, during the entire year, the rain falls for 91.6 days and collects up to 9.69" (246mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, in Mills, it is snowing for 9.9 days. Throughout December, 3.7" (94mm) of snow is accumulated. In Mills, during the entire year, snow falls for 61.5 days and aggregates up to 32.13" (816mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:41 pm MST.
Sunshine
The average sunshine in December in Mills is 6.4h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the coldest time of year in Mills?
How cold is it in Mills in December?
What is the average humidity in December in Mills?
How much does it rain in Mills in December?
How much does it snow in Mills in December?
What is the month with the shortest days in Mills?
What is the average length of the day in December in Mills?
What time are sunrise and sunset in December in Mills?
How many hours of sunshine does Mills have in December?
When is the lowest UV index in Mills?
What is the UV index reading in December in Mills?
Average temperature in December
Mills, WY
- Average high temperature in December: 28.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in December
Mills, WY
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Mills, WY
- Average wind speed in December: 11.7mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).
Average humidity in December
Mills, WY
- Average humidity in December: 77%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (37%).
Average rainfall in December
Mills, WY
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (1.77").
The driest months (with the least rainfall) are January, August and September (0.43").
Average rainfall days in December
Mills, WY
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in December
Mills, WY
- Average snowfall in December: 3.7"
The month with the highest snowfall is November (5.47").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Mills, WY
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Mills, WY
- Average daylight in December: 9h and 1min
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 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in December
Mills, WY
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
Mills, WY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Mills, WY
- Average cloud cover in December: 32
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Mills, WY
- 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).
Mills, Wyoming, USA
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