October 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 October

October, the same as September, is another comfortable autumn month in Denver, Colorado, with average temperature fluctuating between 38.3°F (3.5°C) and 61.3°F (16.3°C).

Temperature

In October, the average high-temperature significantly decreases, from a warm 76.6°F (24.8°C) in September, to an enjoyable 61.3°F (16.3°C). The average low-temperature, in October, is 38.3°F (3.5°C).

Humidity

In October, the average relative humidity is 47%.

Rainfall

In Denver, it is raining for 6.1 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 119.5 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Denver are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 2.8 snowfall days, it receives 4.02" (102mm) of snow. Throughout the year, in Denver, Colorado, there are 43.5 snowfall days, and 35.67" (906mm) of snow is accumulated.

Daylight

The average length of the day in October is 11.1h.

Sunshine

In Denver, the average sunshine is 7.4h.

UV index

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: In October, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 October in Denver?

In Denver, in October, the average high-temperature is 61.3°F (16.3°C), and the average low-temperature is 38.3°F (3.5°C).

What is the average humidity in October in Denver?

In Denver, the average relative humidity in October is 47%.

How many days does it rain in October in Denver?

In Denver, in October, it is raining for 6.1 days, with typically 0.79" (20mm) of accumulated precipitation.

When does it start to snow in Denver?

October is the first month it typically snows in Denver. Throughout October, in the average 2.8 snowfall days, it receives 4.02" (102mm) of snow.

How many hours of daylight does Denver have in October?

In October, the average length of the day in Denver is 11.1h.

How many hours of sunshine does Denver have in October?

The average sunshine in October is 7.4h.

What is the UV index intensity in October in Denver?

In Denver, Colorado, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in October
Denver, CO

Average temperature in October - Denver, CO
  • Average high temperature in October: 61.3°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 October: 38.3°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 October
Denver, CO

Average pressure in October - Denver, CO
  • Average pressure in October: 30.03"

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 October
Denver, CO

Average wind speed in October - Denver, CO
  • Average wind speed in October: 5.8mph

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 October
Denver, CO

Average humidity in October - Denver, CO
  • Average humidity in October: 47%

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 October
Denver, CO

Average rainfall in October - Denver, CO
  • Average rainfall in October: 0.79"

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 October
Denver, CO

Average rainfall days in October - Denver, CO
  • Average rainfall days in October: 6.1 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 October
Denver, CO

Average snowfall in October - Denver, CO
  • Average snowfall in October: 4.02"

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 October
Denver, CO

Average snowfall days in October - Denver, CO
  • Average snowfall days in October: 2.8 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 October /
Average sunshine in October
Denver, CO

Average daylight in October / Average sunshine in October - Denver, CO
  • Average daylight in October: 11.1h

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 October: 7.4h

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 October
Denver, CO

Average sunshine days in October - Denver, CO
  • Average sunshine days in October: 20.7 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 October
Denver, CO

Average UV index in October - Denver, CO
  • Average UV index in October: 3

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 October
Denver, CO

Average cloud cover in October - Denver, CO
  • Average cloud cover in October: 17

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 October
Denver, CO

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