December weather forecast
Fort Morgan, CO

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Weather in December

December, the first month of the winter in Fort Morgan, is still a cold month, with temperature in the range of an average low of 22.5°F (-5.3°C) and an average high of 38.7°F (3.7°C).

Temperature

December, with an average high of 38.7°F (3.7°C) and a low of 22.5°F (-5.3°C), signifies the coldest month of the year.

Humidity

In December, the average relative humidity is 63%.

Rainfall

January and December are months with the least rain when the rain falls for 5 days and typically aggregates up to 0.39" (10mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Fort Morgan, in December, during 5.8 snowfall days, 1.65" (42mm) of snow is typically accumulated. In Fort Morgan, during the entire year, snow falls for 33.8 days and aggregates up to 12.83" (326mm) of snow.

Daylight

The month with the shortest days in Fort Morgan is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:39 pm MST.

Sunshine

February and December, with an average of 6.5h of sunshine, are months with the least sunshine.

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 value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

With average high and low temperatures of 38.7°F (3.7°C) and 22.5°F (-5.3°C) respectively, December is Fort Morgan's coldest month.

How cold does it get in December?

During December, Fort Morgan experiences an average high-temperature of 38.7°F (3.7°C) and a low-temperature of 22.5°F (-5.3°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 63%.

What is the driest month in Fort Morgan?

The months with the least rainfall are January and December Rain falls for 5 days and accumulates 0.39" (10mm) of rain.

How many days does it rain in December?

In December, the rain falls for 5 days. Throughout December, 0.39" (10mm) of precipitation is accumulated.

How many days does it snow in December?

In Fort Morgan, during December, snow falls for 5.8 days and regularly aggregates up to 1.65" (42mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

In Fort Morgan, the average day length in December is 9h and 22min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:39 pm MST.

What are the months with the least sunshine?

The months with the least sunshine are February and December, with an average of 6.5h of sunshine.

How long on average sun shines in December?

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

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.

How high is the UV index in December?

In Fort Morgan, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat 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
Fort Morgan, CO

Average temperature in December - Fort Morgan, CO
  • Average high temperature in December: 38.7°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (38.7°F).

  • Average low temperature in December: 22.5°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.5°F).

Average pressure in December
Fort Morgan, CO

Average pressure in December - Fort Morgan, CO
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Fort Morgan, CO

Average wind speed in December - Fort Morgan, CO
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is December (7.8mph).

Average humidity in December
Fort Morgan, CO

Average humidity in December - Fort Morgan, CO
  • Average humidity in December: 63%

The month with the highest relative humidity is January (64%).
The months with the lowest relative humidity are August and September (45%).

Average rainfall in December
Fort Morgan, CO

Average rainfall in December - Fort Morgan, CO
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.39").

Average rainfall days in December
Fort Morgan, CO

Average rainfall days in December - Fort Morgan, CO
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (2.9 days).

Average snowfall in December
Fort Morgan, CO

Average snowfall in December - Fort Morgan, CO
  • Average snowfall in December: 1.65"

The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Fort Morgan, CO

Average snowfall days in December - Fort Morgan, CO
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Fort Morgan, CO

Average daylight in December / Average sunshine in December - Fort Morgan, CO
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 6h and 3min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

Average sunshine days in December
Fort Morgan, CO

Average sunshine days in December - Fort Morgan, CO
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in December
Fort Morgan, CO

Average UV index in December - Fort Morgan, 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
Fort Morgan, CO

Average cloud cover in December - Fort Morgan, CO
  • Average cloud cover in December: 28

The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in December
Fort Morgan, CO

Average visibility in December - Fort Morgan, 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).

Fort Morgan, Colorado, USA

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