December weather forecast
Otto, WY

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Weather in December

December, the first month of the winter in Otto, is also a subzero cold month, with an average temperature varying between 28.8°F (-1.8°C) and 14.2°F (-9.9°C).

Temperature

December stands out as Otto's coldest month, with temperatures ranging between an average high of 28.8°F (-1.8°C) and a low of 14.2°F (-9.9°C).

Humidity

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

Rainfall

December is the month with the least rainfall. Rain falls for 6.5 days and accumulates 0.2" (5mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, in Otto, it is snowing for 7.5 days. Throughout December, 1.3" (33mm) of snow is accumulated. Throughout the year, there are 41.4 snowfall days, and 9.41" (239mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:29 am and sunset at 4:34 pm. On the last day of December, in Otto, sunrise is at 7:49 am and sunset at 4:43 pm MST.

Sunshine

The average sunshine in December is 7h.

UV index

The months with the lowest UV index in Otto, Wyoming, are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Stay sun-safe with clothing that is both closely woven and worn loosely. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What is the coldest time of year in Otto?

The coldest month in Otto is December, with an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 14.2°F (-9.9°C).

How cold is it in Otto in December?

An average high-temperature, in December, in Otto, is 28.8°F (-1.8°C) and the average low-temperature is 14.2°F (-9.9°C).

What is the average humidity in December in Otto?

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

What is the driest month in Otto?

December is the month with the least rainfall in Otto, Wyoming. Rain falls for 6.5 days and accumulates 0.2" (5mm) of precipitation.

How much does it rain in Otto in December?

In Otto, in December, it is raining for 6.5 days, with typically 0.2" (5mm) of accumulated precipitation.

How many days does it snow in December in Otto?

In December, it is snowing for 7.5 days. Throughout December, 1.3" (33mm) of snow is accumulated.

What is the month with the shortest days in Otto?

December has the shortest days of the year, with an average of 8h and 54min of daylight.

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

In Otto, the average day length in December is 8h and 55min.

What time are sunrise and sunset in December in Otto?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:43 pm MST.

How long on average sun shines in December in Otto?

In December, the average sunshine duration is 7h.

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

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Otto, Wyoming.

What is the UV index intensity in December in Otto?

In December, the average daily maximum UV index in Otto is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's 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
Otto, WY

Average temperature in December - Otto, WY
  • Average high temperature in December: 28.8°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.8°F).

  • Average low temperature in December: 14.2°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in December
Otto, WY

Average pressure in December - Otto, WY
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Otto, WY

Average wind speed in December - Otto, WY
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).

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Average humidity in December
Otto, WY

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

The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (33%).

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Average rainfall in December
Otto, WY

Average rainfall in December - Otto, WY
  • Average rainfall in December: 0.2"

The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in December
Otto, WY

Average rainfall days in December - Otto, WY
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).

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Average snowfall in December
Otto, WY

Average snowfall in December - Otto, WY
  • Average snowfall in December: 1.3"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Otto, WY

Average snowfall days in December - Otto, WY
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is February (9.8 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
Otto, WY

Average daylight in December / Average sunshine in December - Otto, 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: 7h and 0min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).

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Average sunshine days in December
Otto, WY

Average sunshine days in December - Otto, WY
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are April and June (12.5 days).

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Average UV index in December
Otto, WY

Average UV index in December - Otto, 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, March, November and December (UV index 2).

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Average cloud cover in December
Otto, WY

Average cloud cover in December - Otto, WY
  • Average cloud cover in December: 26

The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in December
Otto, WY

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

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