January weather forecast
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn
The colorful sky above the sunlit Denver city, Colorado in autumn

Weather in January

January, like December, in Denver, Colorado, is another cold winter month, with temperature in the range of an average high of 40.5°F (4.7°C) and an average low of 21.6°F (-5.8°C).

Temperature

In Denver, Colorado, the average high-temperature in January is essentially the same as in December - a still wintry 40.5°F (4.7°C). In January, the average low-temperature is 21.6°F (-5.8°C).

Humidity

In Denver, Colorado, the average relative humidity in January is 64%.

Rainfall

The months with the least rainfall are January and December Rain falls for 3.7 days and accumulates 0.39" (10mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Denver. In Denver, in January, during 6.3 snowfall days, 3.03" (77mm) of snow is typically accumulated. In Denver, during the entire year, snow falls for 43.5 days and aggregates up to 35.67" (906mm) of snow.

Daylight

In Denver, the average length of the day in January is 9h and 44min.
On the first day of January in Denver, sunrise is at 7:20 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:18 pm MST.

Sunshine

The average sunshine in January in Denver is 7.1h.

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 reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Denver?

In Denver, Colorado, in January, the average high-temperature is 40.5°F (4.7°C), and the average low-temperature is 21.6°F (-5.8°C).

What is the average humidity in January in Denver?

The average relative humidity in January is 64%.

What is the driest month in Denver?

January and December are months with the least rain in Denver, Colorado, when the rain falls for 3.7 days and typically aggregates up to 0.39" (10mm) of rain.

How much does it rain in Denver in January?

In January, in Denver, Colorado, the rain falls for 3.7 days. Throughout January, 0.39" (10mm) of precipitation is accumulated.

How much does it snow in Denver in January?

In Denver, in January, snow falls for 6.3 days, with typically accumulated 3.03" (77mm) of snow.

What is the average length of the day in January in Denver?

In January, the average day length in Denver, Colorado, is 9h and 44min.

When are sunrise and sunset in January in Denver?

On the first day of January in Denver, Colorado, sunrise is at 7:20 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:18 pm MST.

How many hours of sunshine does Denver have in January?

The average sunshine duration in January in Denver, Colorado, is 7.1h.

When is the lowest UV index in Denver?

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

What is the UV index intensity in January in Denver?

The average daily maximum UV index in January in Denver is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Denver, CO

Average temperature in January - Denver, CO
  • Average high temperature in January: 40.5°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (39.9°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

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Average pressure in January
Denver, CO

Average pressure in January - Denver, CO
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

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Average wind speed in January
Denver, CO

Average wind speed in January - Denver, CO
  • Average wind speed in January: 6.2mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).

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Average humidity in January
Denver, CO

Average humidity in January - Denver, CO
  • Average humidity in January: 64%

The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is June (41%).

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Average rainfall in January
Denver, CO

Average rainfall in January - Denver, CO
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and December (0.39").

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Average rainfall days in January
Denver, CO

Average rainfall days in January - Denver, CO
  • Average rainfall days in January: 3.7 days

The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (3.7 days).

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Average snowfall in January
Denver, CO

Average snowfall in January - Denver, CO
  • Average snowfall in January: 3.03"

The month with the highest snowfall is March (6.26").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Denver, CO

Average snowfall days in January - Denver, CO
  • Average snowfall days in January: 6.3 days

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Denver, CO

Average daylight in January / Average sunshine in January - Denver, CO
  • Average daylight in January: 9h and 44min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in January: 7h and 6min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).

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Average sunshine days in January
Denver, CO

Average sunshine days in January - Denver, CO
  • Average sunshine days in January: 22.7 days

The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (5.6 days).

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Average UV index in January
Denver, CO

Average UV index in January - Denver, CO
  • Average UV index in January: 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, November and December (UV index 2).

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Average cloud cover in January
Denver, CO

Average cloud cover in January - Denver, CO
  • Average cloud cover in January: 20

The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).

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Average visibility in January
Denver, CO

Average visibility in January - Denver, CO
  • Average visibility in January: 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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