January weather forecast and climate
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, the same as December, is another cold winter month in Denver, Colorado, with average temperature ranging between min 21.6°F (-5.8°C) and max 40.5°F (4.7°C).

Temperature

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

Humidity

In January, the average relative humidity is 64%.

Rainfall

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

Snowfall

Months with snowfall in Denver are January through May, October through December. In Denver, in January, during 6.3 snowfall days, 3.03" (77mm) of snow is typically accumulated. Throughout the year, in Denver, Colorado, there are 43.5 snowfall days, and 35.67" (906mm) of snow is accumulated.

Daylight

In Denver, the average length of the day is 9.7h.

Sunshine

The average sunshine in January is 7.1h.

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 value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in January transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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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?

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

How many days does it rain in January in Denver?

In Denver, during January, the rain falls for 3.7 days and regularly aggregates up to 0.39" (10mm) of precipitation.

What is the driest month in Denver?

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

How many days does it snow in January in Denver?

In January, in Denver, Colorado, it is snowing for 6.3 days. Throughout January, 3.03" (77mm) of snow is accumulated.

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

In January, the average length of the day in Denver, Colorado, is 9.7h.

How long on average sun shines in January in Denver?

In Denver, Colorado, the average sunshine in January is 7.1h.

What are the months with the lowest UV index in Denver?

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

How high is the UV index in January in Denver?

In January, the average daily maximum UV index in Denver is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 7.1h

Months with the most sunshine are June, July and August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.9h).

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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

Months with the highest UV index are June and July (UV index 6).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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