December weather forecast
Flagler, CO

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Weather in December

The first month of the winter, December, is also an icy month in Flagler, Colorado, with an average temperature fluctuating between 22.3°F (-5.4°C) and 39°F (3.9°C).

Temperature

December stands out as Flagler's coldest month, with temperatures ranging between an average high of 39°F (3.9°C) and a low of 22.3°F (-5.4°C).

Humidity

The average relative humidity in December is 60%.

Rainfall

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

Snowfall

Months with snowfall are January through May, September through December. In Flagler, Colorado, 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 9h and 30min of daylight.
On the first day of the month, sunrise is at 6:53 am and sunset at 4:29 pm. On the last day of December, in Flagler, sunrise is at 7:11 am and sunset at 4:39 pm MST.

Sunshine

The average sunshine in December in Flagler is 6.8h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. 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. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

December is the month when Flagler, Colorado, experiences its coldest temperatures, averaging a high of 39°F (3.9°C) and a low of 22.3°F (-5.4°C).

Is December cold in Flagler?

An average high-temperature, in December, in Flagler, is 39°F (3.9°C) and the average low-temperature is 22.3°F (-5.4°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in August is evaluated at 84.2°F (29°C).

What is the average humidity in December?

The average relative humidity in December is 60%.

What is the driest month in Flagler?

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

How much does it rain in December?

In Flagler, during December, the rain falls for 2.5 days and regularly aggregates up to 0.2" (5mm) of precipitation.

How many days does it snow in December?

In Flagler, 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?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

How many hours of daylight does Flagler have in December?

In December, the average day length is 9h and 28min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:53 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:39 pm MST.

How long on average sun shines in December?

In Flagler, the average sunshine duration in December is 6.8h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Flagler, CO

Average temperature in December - Flagler, 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).

Average pressure in December
Flagler, CO

Average pressure in December - Flagler, CO
  • Average pressure in December: 30.09"Hg

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

Average wind speed in December
Flagler, CO

Average wind speed in December - Flagler, 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).

Average humidity in December
Flagler, CO

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

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

Average rainfall in December
Flagler, CO

Average rainfall in December - Flagler, 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").

Average rainfall days in December
Flagler, CO

Average rainfall days in December - Flagler, 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).

Average snowfall in December
Flagler, CO

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

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

Average snowfall days in December
Flagler, CO

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

The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Flagler, CO

Average daylight in December / Average sunshine in December - Flagler, CO
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in December
Flagler, CO

Average sunshine days in December - Flagler, 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).

Average UV index in December
Flagler, CO

Average UV index in December - Flagler, CO
  • 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
Flagler, CO

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

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

Average visibility in December
Flagler, CO

Average visibility in December - Flagler, CO
  • 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).

Flagler, Colorado, USA

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