December weather forecast
Ellicott, CO

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Weather in December

The first month of the winter, December, is still a cold month in Ellicott, Colorado, with temperature in the range of an average low of 20.5°F (-6.4°C) and an average high of 38.7°F (3.7°C).

Temperature

The lowest temperatures are recorded in December, with averages reaching a high of 38.7°F (3.7°C) and a low of 20.5°F (-6.4°C).

Humidity

In December, the average relative humidity in Ellicott, Colorado, is 61%.

Rainfall

The months with the least rainfall are January and December Rain falls for 1.8 days and accumulates 0.2" (5mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Ellicott. In December, in Ellicott, it is snowing for 5.1 days. Throughout December, 1.46" (37mm) of snow is accumulated. In Ellicott, Colorado, during the entire year, snow falls for 34.7 days and aggregates up to 13.27" (337mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 6:57 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:45 pm MST.

Sunshine

In December, the average sunshine in Ellicott, Colorado, is 7h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Ellicott. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Ellicott?

December, on average, is the coldest month in Ellicott, registering a high temperature of 38.7°F (3.7°C) and a low of 20.5°F (-6.4°C).

How cold does it get in Ellicott in December?

In December, the average high-temperature and low-temperature in Ellicott are 38.7°F (3.7°C) and 20.5°F (-6.4°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in July is estimated at 82.4°F (28°C).

What is the average humidity in December in Ellicott?

In Ellicott, Colorado, the average relative humidity in December is 61%.

What is the driest month in Ellicott?

The months with the least rainfall in Ellicott, Colorado, are January and December Rain falls for 1.8 days and accumulates 0.2" (5mm) of rain.

How many days does it rain in December in Ellicott?

In Ellicott, Colorado, during December, the rain falls for 1.8 days and regularly aggregates up to 0.2" (5mm) of precipitation.

How many days does it snow in December in Ellicott?

In December, it is snowing for 5.1 days. Throughout December, 1.46" (37mm) of snow is accumulated.

What is the month with the shortest days in Ellicott?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Ellicott have in December?

In December, the average day length in Ellicott is 9h and 30min.

What time are sunrise and sunset in December in Ellicott?

On the first day of December in Ellicott, sunrise is at 6:57 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:45 pm MST.

How long on average sun shines in December in Ellicott?

In Ellicott, the average sunshine duration in December is 7h.

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

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

How high is the UV index in December in Ellicott?

In December, the average daily maximum UV index in Ellicott, Colorado, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Ellicott, CO

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

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (38.7°F).

  • Average low temperature in December: 20.5°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is December (20.5°F).

Average pressure in December
Ellicott, CO

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.9"Hg).

Average wind speed in December
Ellicott, CO

Average wind speed in December - Ellicott, CO
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in December
Ellicott, CO

Average humidity in December - Ellicott, CO
  • Average humidity in December: 61%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is June (44%).

Average rainfall in December
Ellicott, CO

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

The wettest month (with the highest rainfall) is July (2.72").
The driest months (with the least rainfall) are January and December (0.2").

Average rainfall days in December
Ellicott, CO

Average rainfall days in December - Ellicott, CO
  • Average rainfall days in December: 1.8 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is December (1.8 days).

Average snowfall in December
Ellicott, CO

Average snowfall in December - Ellicott, CO
  • Average snowfall in December: 1.46"

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Ellicott, CO

Average snowfall days in December - Ellicott, CO
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 7h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).

Average sunshine days in December
Ellicott, CO

Average sunshine days in December - Ellicott, CO
  • Average sunshine days in December: 25.3 days

The month with the most sunshine days is December (25.3 days).
The month with the least sunshine days is July (6.8 days).

Average UV index in December
Ellicott, CO

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

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

Average cloud cover in December
Ellicott, CO

Average cloud cover in December - Ellicott, CO
  • Average cloud cover in December: 21

The month with the most cloud cover is April (Cloud cover 25).
The months with the least cloud cover are June, October and November (Cloud cover 16).

Average visibility in December
Ellicott, CO

Average visibility in December - Ellicott, 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).

Ellicott, Colorado, USA

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