January weather forecast and climate
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
January, the same as December, is another cold winter month in Denver, Colorado, with average temperature ranging between max 40.5°F (4.7°C) and min 21.6°F (-5.8°C).

Temperature

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

Humidity

In Denver, 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, during January, snow falls for 6.3 days and regularly aggregates up to 3.03" (77mm) of snow. Throughout the year, in Denver, there are 43.5 snowfall days, and 35.67" (906mm) of snow is accumulated.

Daylight

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

Sunshine

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

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in January in Denver?

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

How much does it rain in Denver in January?

In Denver, in January, it is raining for 3.7 days, with typically 0.39" (10mm) of accumulated precipitation.

What is the driest month in Denver?

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

How many days does it snow in January in Denver?

In Denver, Colorado, during January, snow falls for 6.3 days and regularly aggregates up to 3.03" (77mm) of snow.

How many hours of daylight does Denver have in January?

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

How many hours of sunshine does Denver have in January?

In Denver, the average sunshine in January 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 value of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - Denver, CO
  • Average high temperature in January: 4.7°C

The warmest month (with the highest average high temperature) is July (29.1°C).
The month with the lowest average high temperature is December (4.4°C).

  • Average low temperature in January: -5.8°C

The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is December (-6.3°C).

Average pressure in January - Denver, CO
  • Average pressure in January: 1020.7mbar

The month with the highest atmospheric pressure is January (1020.7mbar).
The month with the lowest atmospheric pressure is April (1012.9mbar).

Average wind speed in January - Denver, CO
  • Average wind speed in January: 9.9km/h

The windiest month (with the highest average wind speed) is April (10.6km/h).
The calmest months (with the lowest average wind speed) are August and September (9.2km/h).

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%).

Average rainfall in January - Denver, CO
  • Average rainfall in January: 10mm

The wettest month (with the highest rainfall) is May (60mm).
The driest months (with the least rainfall) are January and December (10mm).

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).

Average snowfall in January - Denver, CO
  • Average snowfall in January: 77mm

The month with the highest snowfall is March (159mm).
Months with the least snowfall are June, July, August and September (0mm).

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).

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).

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).

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).

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).

Average visibility in January - Denver, CO
  • Average visibility in January: 10km

Months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is February (9km).