December weather forecast
Basalt, CO

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Weather in December

December, the first month of the winter in Basalt, is still a freezing cold month, with an average temperature ranging between max 27.9°F (-2.3°C) and min 7.7°F (-13.5°C).

Temperature

In Basalt, Colorado, December is the coldest month, with temperatures averaging a high of 27.9°F (-2.3°C) and a low of 7.7°F (-13.5°C).

Humidity

The average relative humidity in December in Basalt, Colorado, is 83%.

Rainfall

In December, the rain falls for 8.2 days. Throughout December, 1.54" (39mm) of precipitation is accumulated. Throughout the year, in Basalt, there are 119.7 rainfall days, and 16.69" (424mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Basalt, in December, during 16.5 snowfall days, 12.72" (323mm) of snow is typically accumulated. In Basalt, during the entire year, snow falls for 100.5 days and aggregates up to 78.03" (1982mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of December, in Basalt, Colorado, sunrise is at 7:27 am and sunset at 4:55 pm MST.

Sunshine

In Basalt, the average sunshine in December is 6.2h.

UV index

The month with the lowest UV index in Basalt is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 1 transforms into the following instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What month is the coldest in Basalt?

The coldest time of the year in Basalt, Colorado, is December, with temperatures averaging a high of 27.9°F (-2.3°C) and a low of 7.7°F (-13.5°C).

How cold is it in Basalt in December?

In Basalt, 27.9°F (-2.3°C) is the average high-temperature and 7.7°F (-13.5°C) is the average low-temperature during December.

What is the average humidity in December in Basalt?

In December, the average relative humidity is 83%.

How many days does it rain in December in Basalt?

In Basalt, Colorado, in December, it is raining for 8.2 days, with typically 1.54" (39mm) of accumulated precipitation.

How many days does it snow in December in Basalt?

In Basalt, during December, snow falls for 16.5 days and regularly aggregates up to 12.72" (323mm) of snow.

What is the month with the shortest days in Basalt?

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

What is the average length of the day in December in Basalt?

In December, the average day length is 9h and 27min.

When is the sunrise / sunset in December in Basalt?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of the month, in Basalt, Colorado, sunrise is at 7:27 am and sunset at 4:55 pm MST.

How long on average sun shines in December in Basalt?

In December, the average sunshine duration in Basalt, Colorado, is 6.2h.

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

The month with the lowest UV index in Basalt, Colorado, is December, with an average maximum UV index of 1.

What is the UV index intensity in December in Basalt?

The average daily maximum UV index in December in Basalt is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Basalt, CO

Average temperature in December - Basalt, CO
  • Average high temperature in December: 27.9°F

The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in December: 7.7°F

The month with the highest average low temperature is July (43.9°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

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Average pressure in December
Basalt, CO

Average pressure in December - Basalt, CO
  • Average pressure in December: 30.18"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is May (29.94"Hg).

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Average wind speed in December
Basalt, CO

Average wind speed in December - Basalt, CO
  • Average wind speed in December: 4.5mph

The windiest month (with the highest average wind speed) is June (5.9mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

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Average humidity in December
Basalt, CO

Average humidity in December - Basalt, CO
  • Average humidity in December: 83%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (48%).

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Average rainfall in December
Basalt, CO

Average rainfall in December - Basalt, CO
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is April (2.05").
The driest month (with the least rainfall) is September (0.63").

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Average rainfall days in December
Basalt, CO

Average rainfall days in December - Basalt, CO
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (5.1 days).

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Average snowfall in December
Basalt, CO

Average snowfall in December - Basalt, CO
  • Average snowfall in December: 12.72"

The month with the highest snowfall is February (13.94").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Basalt, CO

Average snowfall days in December - Basalt, CO
  • Average snowfall days in December: 16.5 days

The month with the highest number of snowfall days is February (18.7 days).
The months with the least snowfall days are July and August (0 days).

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

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

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 24min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

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Average sunshine days in December
Basalt, CO

Average sunshine days in December - Basalt, CO
  • Average sunshine days in December: 13 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (7.3 days).

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Average UV index in December
Basalt, CO

Average UV index in December - Basalt, CO
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Basalt, CO

Average cloud cover in December - Basalt, CO
  • Average cloud cover in December: 36

The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are June and September (Cloud cover 14).

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Average visibility in December
Basalt, CO

Average visibility in December - Basalt, CO
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Basalt, Colorado, USA

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