December weather forecast
Ranchester, WY

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Weather in December

The first month of the winter, December, is also a subzero cold month in Ranchester, Wyoming, with temperature in the range of an average high of 29.3°F (-1.5°C) and an average low of 15.3°F (-9.3°C).

Temperature

Ranchester's December weather comes with a decrease in average high-temperatures, moving from an icy 39.7°F (4.3°C) in November to a subzero cold 29.3°F (-1.5°C). Ranchester observes an average low-temperature of 15.3°F (-9.3°C) during December.

Humidity

In Ranchester, Wyoming, the average relative humidity in December is 73%.

Rainfall

December is the month with the least rainfall in Ranchester. Rain falls for 7.8 days and accumulates 0.75" (19mm) of precipitation.

Snowfall

Months with snowfall in Ranchester are January through May, September through December. In December, it is snowing for 13.6 days. Throughout December, 4.41" (112mm) of snow is accumulated. In Ranchester, during the entire year, snow falls for 78.9 days and aggregates up to 46.3" (1176mm) of snow.

Daylight

December has the shortest days of the year in Ranchester, with an average of 8h and 48min of daylight.
On the first day of December in Ranchester, sunrise is at 7:27 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:37 pm MST.

Sunshine

The average sunshine in December is 6.5h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Ranchester. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

How cold is December in Ranchester?

December temperatures in Ranchester vary between a high-temperature of 29.3°F (-1.5°C) and a low-temperature of 15.3°F (-9.3°C).

What is the average humidity in December in Ranchester?

In Ranchester, the average relative humidity in December is 73%.

What is the driest month in Ranchester?

December is the month with the least rainfall. Rain falls for 7.8 days and accumulates 0.75" (19mm) of precipitation.

How many days does it rain in December in Ranchester?

In Ranchester, Wyoming, during December, the rain falls for 7.8 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How much does it snow in Ranchester in December?

In Ranchester, during December, snow falls for 13.6 days and regularly aggregates up to 4.41" (112mm) of snow.

What is the month with the shortest days in Ranchester?

With an average of 8h and 48min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Ranchester?

In December, the average day length in Ranchester is 8h and 51min.

What time are sunrise and sunset in December in Ranchester?

On the first day of December, sunrise is at 7:27 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:37 pm MST.

How long on average sun shines in December in Ranchester?

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

What is the month with the lowest UV index in Ranchester?

The months with the lowest UV index in Ranchester are January through April, October through December, with an average maximum UV index of 2.

How high is the UV index in December in Ranchester?

In December, the average daily maximum UV index in Ranchester is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
Ranchester, WY

Average temperature in December - Ranchester, WY
  • Average high temperature in December: 29.3°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is February (29.1°F).

  • Average low temperature in December: 15.3°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).

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Average pressure in December
Ranchester, WY

Average pressure in December - Ranchester, WY
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Ranchester, WY

Average wind speed in December - Ranchester, WY
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in December
Ranchester, WY

Average humidity in December - Ranchester, WY
  • Average humidity in December: 73%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in December
Ranchester, WY

Average rainfall in December - Ranchester, WY
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is December (0.75").

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Average rainfall days in December
Ranchester, WY

Average rainfall days in December - Ranchester, WY
  • Average rainfall days in December: 7.8 days

The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in December
Ranchester, WY

Average snowfall in December - Ranchester, WY
  • Average snowfall in December: 4.41"

The month with the highest snowfall is April (8.7").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Ranchester, WY

Average snowfall days in December - Ranchester, WY
  • Average snowfall days in December: 13.6 days

The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Ranchester, WY

Average daylight in December / Average sunshine in December - Ranchester, WY
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).

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Average sunshine days in December
Ranchester, WY

Average sunshine days in December - Ranchester, WY
  • Average sunshine days in December: 14.2 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is May (5.8 days).

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Average UV index in December
Ranchester, WY

Average UV index in December - Ranchester, WY
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in December
Ranchester, WY

Average cloud cover in December - Ranchester, WY
  • Average cloud cover in December: 33

The months with the most cloud cover are February and April (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 15).

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Average visibility in December
Ranchester, WY

Average visibility in December - Ranchester, 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).

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Ranchester, Wyoming, USA

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