December weather forecast
Lost Springs, WY

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Weather in December

December, the first month of the winter in Lost Springs, is still a cold month, with temperature in the range of an average high of 33.8°F (1°C) and an average low of 19.2°F (-7.1°C).

Temperature

December is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 19.2°F (-7.1°C).

Humidity

In December, the average relative humidity is 69%.

Rainfall

In December, the rain falls for 3.2 days. Throughout December, 0.39" (10mm) of precipitation is accumulated. Throughout the year, there are 84.9 rainfall days, and 9.61" (244mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Lost Springs, in December, during 7.2 snowfall days, 1.73" (44mm) of snow is typically accumulated. Throughout the year, there are 43 snowfall days, and 17.64" (448mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:11 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:36 pm MST.

Sunshine

The average sunshine in December is 6.5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

Lost Springs's December weather, marked by an average high temperature of 33.8°F (1°C) and an average low temperature of 19.2°F (-7.1°C), is the coldest in the year.

How cold is it in December?

In December, in Lost Springs, the average high-temperature is 33.8°F (1°C), and the average low-temperature is 19.2°F (-7.1°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 84.2°F (29°C).

What is the average humidity in December?

In Lost Springs, the average relative humidity in December is 69%.

How many days does it rain in December?

In Lost Springs, in December, during 3.2 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, it is snowing for 7.2 days. Throughout December, 1.73" (44mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

How many hours of daylight does Lost Springs have in December?

In December, the average day length is 9h and 6min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:11 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:36 pm MST.

How long on average sun shines in December?

In Lost Springs, the average sunshine duration in December is 6.5h.

When is the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in December?

The average daily maximum UV index in December in Lost Springs is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Lost Springs, WY

Average temperature in December - Lost Springs, WY
  • Average high temperature in December: 33.8°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (33.8°F).

  • Average low temperature in December: 19.2°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).

Average pressure in December
Lost Springs, WY

Average pressure in December - Lost Springs, WY
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Lost Springs, WY

Average wind speed in December - Lost Springs, WY
  • Average wind speed in December: 11mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

Average humidity in December
Lost Springs, WY

Average humidity in December - Lost Springs, WY
  • Average humidity in December: 69%

The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is August (40%).

Average rainfall in December
Lost Springs, WY

Average rainfall in December - Lost Springs, WY
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.31").

Average rainfall days in December
Lost Springs, WY

Average rainfall days in December - Lost Springs, WY
  • Average rainfall days in December: 3.2 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in December
Lost Springs, WY

Average snowfall in December - Lost Springs, WY
  • Average snowfall in December: 1.73"

The month with the highest snowfall is November (2.8").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Lost Springs, WY

Average snowfall days in December - Lost Springs, WY
  • Average snowfall days in December: 7.2 days

The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Lost Springs, WY

Average daylight in December / Average sunshine in December - Lost Springs, 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 3min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).

Average sunshine days in December
Lost Springs, WY

Average sunshine days in December - Lost Springs, WY
  • Average sunshine days in December: 21.7 days

The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is April (14.5 days).

Average UV index in December
Lost Springs, WY

Average UV index in December - Lost Springs, 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, November and December (UV index 2).

Average cloud cover in December
Lost Springs, WY

Average cloud cover in December - Lost Springs, WY
  • Average cloud cover in December: 31

The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in December
Lost Springs, WY

Average visibility in December - Lost Springs, 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).

Lost Springs, Wyoming, USA

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