December weather forecast
Berthoud, CO

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Weather in December

December, the first month of the winter in Berthoud, is also an icy month, with an average temperature varying between 39.4°F (4.1°C) and 20.7°F (-6.3°C).

Temperature

Berthoud witnesses the coldest weather in December, with temperatures averaging a high of 39.4°F (4.1°C) and a low of 20.7°F (-6.3°C).

Humidity

In December, the average relative humidity in Berthoud is 63%.

Rainfall

In December, the rain falls for 4 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. Throughout the year, in Berthoud, there are 109.5 rainfall days, and 11.34" (288mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Berthoud, during December, snow falls for 6.5 days and regularly aggregates up to 2.8" (71mm) of snow. Throughout the year, in Berthoud, there are 39.7 snowfall days, and 26.14" (664mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:44 pm MST.

Sunshine

In December, the average sunshine is 6.9h.

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 low threat to health from unsafe exposure to UV radiation for the average person.
Note: In December, the UV index of 2 transforms into the following advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

What is the coldest month in Berthoud?

Berthoud reaches its average lowest temperatures in December, measuring 39.4°F (4.1°C) at the peak and 20.7°F (-6.3°C) at the lowest.

How cold is December in Berthoud?

December temperatures in Berthoud, Colorado, vary between a high-temperature of 39.4°F (4.1°C) and a low-temperature of 20.7°F (-6.3°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in December in Berthoud?

In Berthoud, Colorado, the average relative humidity in December is 63%.

How many days does it rain in December in Berthoud?

In Berthoud, Colorado, in December, during 4 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

How much does it snow in Berthoud in December?

In December, in Berthoud, it is snowing for 6.5 days. Throughout December, 2.8" (71mm) of snow is accumulated.

What is the month with the shortest days in Berthoud?

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

How many hours of daylight does Berthoud have in December?

In December, the average day length in Berthoud, Colorado, is 9h and 22min.

When are sunrise and sunset in December in Berthoud?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:34 pm. On the last day of the month, in Berthoud, sunrise is at 7:22 am and sunset at 4:44 pm MST.

How many hours of sunshine does Berthoud have in December?

The average sunshine duration in December in Berthoud, Colorado, is 6.9h.

When is the lowest UV index in Berthoud?

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

What is the UV index reading in December in Berthoud?

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

Average temperature in December - Berthoud, CO
  • Average high temperature in December: 39.4°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

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Average pressure in December
Berthoud, CO

Average pressure in December - Berthoud, CO
  • Average pressure in December: 30.13"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).

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Average wind speed in December
Berthoud, CO

Average wind speed in December - Berthoud, CO
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are August and December (5.7mph).

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Average humidity in December
Berthoud, CO

Average humidity in December - Berthoud, CO
  • Average humidity in December: 63%

The month with the highest relative humidity is February (65%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in December
Berthoud, CO

Average rainfall in December - Berthoud, CO
  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.31").

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Average rainfall days in December
Berthoud, CO

Average rainfall days in December - Berthoud, CO
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (3 days).

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Average snowfall in December
Berthoud, CO

Average snowfall in December - Berthoud, CO
  • Average snowfall in December: 2.8"

The month with the highest snowfall is April (4.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Berthoud, CO

Average snowfall days in December - Berthoud, CO
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is February (9.4 days).
The 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
Berthoud, CO

Average daylight in December / Average sunshine in December - Berthoud, 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 5min

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).

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Average sunshine days in December
Berthoud, CO

Average sunshine days in December - Berthoud, CO
  • Average sunshine days in December: 22.9 days

The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is July (7.8 days).

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Average UV index in December
Berthoud, CO

Average UV index in December - Berthoud, 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).

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Average cloud cover in December
Berthoud, CO

Average cloud cover in December - Berthoud, CO
  • Average cloud cover in December: 24

The months with the most cloud cover are April and May (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 16).

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Average visibility in December
Berthoud, CO

Average visibility in December - Berthoud, 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).

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Berthoud, Colorado, USA

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