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 proves to be the coldest month in Newcastle, recording an average maximum temperature of 26.2°F (-3.2°C) and a minimum temperature of 11.7°F (-11.3°C).Humidity
In Newcastle, Wyoming, the average relative humidity in December is 81%.Rainfall
December is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.67" (17mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Newcastle, during December, snow falls for 11.7 days and regularly aggregates up to 3.98" (101mm) of snow. In Newcastle, during the entire year, snow falls for 80.3 days and aggregates up to 41.38" (1051mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Newcastle.On the first day of the month, sunrise is at 7:11 am and sunset at 4:20 pm. On the last day of December, in Newcastle, sunrise is at 7:30 am and sunset at 4:29 pm MST.
Sunshine
The average sunshine in December in Newcastle is 5.8h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What part of the year is the coldest in Newcastle?
How cold is December in Newcastle?
What is the average humidity in December in Newcastle?
What is the driest month in Newcastle?
How much does it rain in Newcastle in December?
How many days does it snow in December in Newcastle?
What is the month with the shortest days in Newcastle?
What is the average length of the day in December in Newcastle?
When are sunrise and sunset in December in Newcastle?
How long on average sun shines in December in Newcastle?
What is the month with the lowest UV index in Newcastle?
What is the UV index reading in December in Newcastle?
Average temperature in December
Newcastle, WY
- Average high temperature in December: 26.2°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 (26.2°F).
- Average low temperature in December: 11.7°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).
Average pressure in December
Newcastle, WY
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Newcastle, WY
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in December
Newcastle, WY
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (53%).
Average rainfall in December
Newcastle, WY
- Average rainfall in December: 0.67"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in December
Newcastle, WY
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in December
Newcastle, WY
- Average snowfall in December: 3.98"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Newcastle, WY
- Average snowfall days in December: 11.7 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Newcastle, 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: 5h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in December
Newcastle, WY
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in December
Newcastle, 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
Newcastle, WY
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Newcastle, WY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Newcastle, Wyoming, USA
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