December weather forecastErie, CO

December

Weather in December

Finally, Erie, Colorado embraces the winter season head-on in December. There is a strong winter chill in the air, coupled with occasionally snowy conditions. Despite displaying the shortest daylight hours of the year, December maintains an average of 6.8 hours of daily sunshine. January hints a slight increase in daily maximum temperatures, signaling the slow march towards the warmer seasons. Consequently, December can be a magical time in Erie, as the festive season meets snow-filled streets.

Temperature

Erie records the coldest temperatures in December, averaging a high of 40.8°F (4.9°C) and a low of 21°F (-6.1°C).

Humidity

The average relative humidity in December is 61%.

Rainfall

The months with the least rainfall are January and December Rain falls for 3 days and accumulates 0.35" (9mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Erie, during December, snow falls for 5.9 days and regularly aggregates up to 2.83" (72mm) of snow. Throughout the year, there are 38.2 snowfall days, and 27.44" (697mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:03 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:45 pm MST.

Sunshine

In December, the average sunshine is 6.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 2 during December leads to these instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December tends to be the coldest month, with temperatures averaging a daily high of 40.8°F (4.9°C) and a low of 21°F (-6.1°C).

The average high-temperature, in December, in Erie, is 40.8°F (4.9°C), while the average low-temperature is 21°F (-6.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 87.8°F (31°C).

The average relative humidity in December is 61%.

January and December are months with the least rain when the rain falls for 3 days and typically aggregates up to 0.35" (9mm) of rain.

In Erie, in December, during 3 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

In Erie, during December, snow falls for 5.9 days and regularly aggregates up to 2.83" (72mm) of snow.

With an average of 9h and 24min of daylight, December has the shortest days of the year.

In December, the average day length is 9h and 23min.

On the first day of December, sunrise is at 7:03 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:45 pm MST.

In December, the average sunshine duration is 6.8h.

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

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Erie, CO

  • Average high temperature in December: 40.8°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (40.8°F).

  • Average low temperature in December: 21°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (21°F).

Average pressure in December
Erie, CO

  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Erie, CO

  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is December (5.7mph).

Average humidity in December
Erie, CO

  • Average humidity in December: 61%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (40%).

Average rainfall in December
Erie, CO

  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is May (1.69").
The driest months (with the least rainfall) are January and December (0.35").

Average rainfall days in December
Erie, CO

  • Average rainfall days in December: 3 days

The months with the highest number of rainy days are May and July (12.3 days).
The months with the least rainy days are January and December (3 days).

Average snowfall in December
Erie, CO

  • Average snowfall in December: 2.83"

The month with the highest snowfall is April (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Erie, CO

  • Average snowfall days in December: 5.9 days

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

  • Average daylight in December: 9h and 24min

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 48min

The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

Average sunshine days in December
Erie, CO

  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is December (24.5 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in December
Erie, 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
Erie, CO

  • Average cloud cover in December: 24

The month with the most cloud cover is April (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 15).

Average visibility in December
Erie, 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).