December weather forecast and climate
Simla, CO

Weather in December

December, the first month of the winter, in Simla, is also a wintry month, with average temperature ranging between max 39°F (3.9°C) and min 22.3°F (-5.4°C).

Temperature

The coldest month is December, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 22.3°F (-5.4°C).

Humidity

In December, the average relative humidity is 60%.

Rainfall

The month with the least rainfall in Simla is December when the rain falls for 2.5 days and typically collects 0.2" (5mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Simla. In Simla, in December, during 3.5 snowfall days, 0.75" (19mm) of snow is typically accumulated. Throughout the year, there are 26.7 snowfall days, and 9.02" (229mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9.5h of daylight.

Sunshine

In December, the average sunshine is 6.8h.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Simla?

With an average high-temperature of 39°F (3.9°C) and an average low-temperature of 22.3°F (-5.4°C), December is the coldest month in Simla.

What is the temperature in December in Simla?

The average high-temperature, in December, is 39°F (3.9°C), while the average low-temperature is 22.3°F (-5.4°C).

What is the average humidity in December in Simla?

In December, the average relative humidity in Simla, Colorado, is 60%.

How many days does it rain in December in Simla?

In Simla, Colorado, in December, during 2.5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

What is the driest month in Simla?

December is the month with the least rainfall in Simla. Rain falls for 2.5 days and accumulates 0.2" (5mm) of precipitation.

How many days does it snow in December in Simla?

In Simla, during December, snow falls for 3.5 days and regularly aggregates up to 0.75" (19mm) of snow.

What is the month with the shortest days in Simla?

The month with the shortest days is December, with an average of 9.5h of daylight.

How many hours of daylight does Simla have in December?

In Simla, the average length of the day in December is 9.5h.

How many hours of sunshine does Simla have in December?

The average sunshine in December is 6.8h.

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

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

How high is the UV index in December in Simla?

In Simla, Colorado, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the UV radiation.

Average temperature in December
Simla, CO

Average temperature in December - Simla, CO
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (39°F).

  • Average low temperature in December: 22.3°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).

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Average pressure in December
Simla, CO

Average pressure in December - Simla, CO
  • Average pressure in December: 30.09"

Months with the highest atmospheric pressure are January and December (30.09").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in December
Simla, CO

Average wind speed in December - Simla, CO
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

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Average humidity in December
Simla, CO

Average humidity in December - Simla, CO
  • Average humidity in December: 60%

The month with the highest relative humidity is February (63%).
Months with the lowest relative humidity are June and September (46%).

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Average rainfall in December
Simla, CO

Average rainfall in December - Simla, CO
  • Average rainfall in December: 0.2"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in December
Simla, CO

Average rainfall days in December - Simla, CO
  • Average rainfall days in December: 2.5 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (1.7 days).

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Average snowfall in December
Simla, CO

Average snowfall in December - Simla, CO
  • Average snowfall in December: 0.75"

The month with the highest snowfall is February (1.93").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Simla, CO

Average snowfall days in December - Simla, CO
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is February (6.1 days).
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
Simla, CO

Average daylight in December / Average sunshine in December - Simla, CO
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 6.8h

Months with the most sunshine are June, July and August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.6h).

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Average sunshine days in December
Simla, CO

Average sunshine days in December - Simla, CO
  • Average sunshine days in December: 24.9 days

The month with the most sunshine days is December (24.9 days).
The month with the least sunshine days is July (13.4 days).

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Average UV index in December
Simla, CO

Average UV index in December - Simla, CO
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Simla, CO

Average cloud cover in December - Simla, CO
  • Average cloud cover in December: 25

Months with the most cloud cover are February and April (Cloud cover 27).
Months with the least cloud cover are June and September (Cloud cover 16).

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Average visibility in December
Simla, CO

Average visibility in December - Simla, CO
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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