December weather forecast
Wyarno, WY

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Weather in December

The first month of the winter, December, is still a freezing cold month in Wyarno, Wyoming, with an average temperature ranging between min 15.3°F (-9.3°C) and max 29.3°F (-1.5°C).

Temperature

As November transitions to December, the average high-temperature falls from a cold 39.7°F (4.3°C) to a freezing cold 29.3°F (-1.5°C). Wyarno, during the nights of December, experiences an average temperature drop to a still subzero cold 15.3°F (-9.3°C).

Humidity

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

Rainfall

The month with the least rainfall in Wyarno is December, when the rain falls for 7.8 days and typically collects 0.75" (19mm) of precipitation.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 8h and 54min of daylight.
On the first day of December, sunrise is at 7:25 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:36 pm MST.

Sunshine

In Wyarno, 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 Wyarno. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

How cold is it in Wyarno in December?

In December, in Wyarno, the average high-temperature is 29.3°F (-1.5°C), and the average low-temperature is 15.3°F (-9.3°C).

What is the average humidity in December in Wyarno?

The average relative humidity in December in Wyarno is 73%.

What is the driest month in Wyarno?

The month with the least rainfall in Wyarno is December, when the rain falls for 7.8 days and typically collects 0.75" (19mm) of precipitation.

How much does it rain in Wyarno in December?

In Wyarno, 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 Wyarno in December?

In December, in Wyarno, Wyoming, it is snowing for 13.6 days. Throughout December, 4.41" (112mm) of snow is accumulated.

What is the month with the shortest days in Wyarno?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Wyarno, Wyoming.

How many hours of daylight does Wyarno have in December?

The average day length in December in Wyarno, Wyoming, is 8h and 52min.

What time are sunrise and sunset in December in Wyarno?

On the first day of December in Wyarno, Wyoming, sunrise is at 7:25 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:36 pm MST.

How long on average sun shines in December in Wyarno?

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

When is the lowest UV index in Wyarno?

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

How high is the UV index in December in Wyarno?

In December, the average daily maximum UV index in Wyarno, Wyoming, is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe 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
Wyarno, WY

Average temperature in December - Wyarno, 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
Wyarno, WY

Average pressure in December - Wyarno, 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
Wyarno, WY

Average wind speed in December - Wyarno, 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
Wyarno, WY

Average humidity in December - Wyarno, 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
Wyarno, WY

Average rainfall in December - Wyarno, 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
Wyarno, WY

Average rainfall days in December - Wyarno, 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
Wyarno, WY

Average snowfall in December - Wyarno, 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
Wyarno, WY

Average snowfall days in December - Wyarno, 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
Wyarno, WY

Average daylight in December / Average sunshine in December - Wyarno, 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 54min).

  • 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
Wyarno, WY

Average sunshine days in December - Wyarno, 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
Wyarno, WY

Average UV index in December - Wyarno, 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
Wyarno, WY

Average cloud cover in December - Wyarno, 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
Wyarno, WY

Average visibility in December - Wyarno, 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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Wyarno, Wyoming, USA

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