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
Kelly's temperature records reveal December as the coldest month, marked by average highs of 21°F (-6.1°C) and lows of 4.1°F (-15.5°C).Humidity
In Kelly, the average relative humidity in December is 92%.Rainfall
In Kelly, in December, during 5.5 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Kelly, during the entire year, the rain falls for 116.8 days and collects up to 27.95" (710mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In December, it is snowing for 21.7 days. Throughout December, 22.44" (570mm) of snow is accumulated. In Kelly, during the entire year, snow falls for 130.7 days and aggregates up to 137.48" (3492mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:36 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:55 pm MST.
Sunshine
The average sunshine in December is 3.8h.UV index
January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. It's recommended to limit sun exposure when its radiation is at its peak during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December in Kelly?
When is the lowest UV index?
What is the UV index reading in December in Kelly?
Average temperature in December
Kelly, WY
- Average high temperature in December: 21°F
The warmest month (with the highest average high temperature) is July (72°F).
The month with the lowest average high temperature is December (21°F).
- Average low temperature in December: 4.1°F
The month with the highest average low temperature is July (43.9°F).
The coldest month (with the lowest average low temperature) is December (4.1°F).
Average pressure in December
Kelly, WY
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Kelly, WY
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.5mph).
Average humidity in December
Kelly, WY
- Average humidity in December: 92%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Kelly, WY
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is February (3.23").
The driest month (with the least rainfall) is August (1.42").
Average rainfall days in December
Kelly, WY
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (16.2 days).
The months with the least rainy days are January and February (3.9 days).
Average snowfall in December
Kelly, WY
- Average snowfall in December: 22.44"
The month with the highest snowfall is February (25.94").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Kelly, WY
- Average snowfall days in December: 21.7 days
The month with the highest number of snowfall days is December (21.7 days).
The month with the least snowfall days is July (0 days).
Average daylight in December /
Average sunshine in December
Kelly, WY
- 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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Kelly, WY
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is July (15.6 days).
The month with the least sunshine days is April (7 days).
Average UV index in December
Kelly, WY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in December
Kelly, WY
- Average cloud cover in December: 65
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Kelly, WY
- Average visibility in December: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January and February (2mi).
Kelly, Wyoming, USA
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