October weather forecast
Denver, CO

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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



Denver's October brings a noticeable shift in weather with shorter days accompanied by cooler temperatures. Compared to September, October sees a notable dip in the temperature with an average high falling to 61.3°F (16.3°C), signifying the onset of the cooler season. Also, October sets the stage for incoming winter with residents encountering the first snowfall of 4.02" (102mm) since the end of spring. The city's weather in October is marked by mesmerizing fall colors, making Denver particularly scenic under the crisp, blue skies. Thus, October in Denver becomes a blend of fall aesthetics interrupted by early winter snow showers.


Temperature

The shift into October in Denver, Colorado, brings a noticeable decrease in the average high-temperature, falling from a moderately hot 76.6°F (24.8°C) in September to an enjoyable 61.3°F (16.3°C). Denver registers a prominent dip from daytime highs, with an average of 38.3°F (3.5°C) during the nights of October.

Humidity

In October, the average relative humidity is 47%.

Rainfall

In October, the rain falls for 6.1 days. Throughout October, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Denver, there are 119.5 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. 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, there are 43.5 snowfall days, and 35.67" (906mm) of snow is accumulated.

Daylight

In Denver, Colorado, the average length of the day in October is 11h and 8min.
On the first day of the month, sunrise is at 6:56 am and sunset at 6:41 pm. On the last day of October, in Denver, sunrise is at 7:28 am and sunset at 5:58 pm MDT.

Sunshine

In October, the average sunshine in Denver is 7.4h.

UV index

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 3 in October interprets into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What are October temperatures in Denver?

October temperatures in Denver vary between a high-temperature of 61.3°F (16.3°C) and a low-temperature of 38.3°F (3.5°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 82.4°F (28°C).

What is the average humidity in October in Denver?

In October, the average relative humidity is 47%.

How much does it rain in Denver in October?

In Denver, Colorado, during October, the rain falls for 6.1 days and regularly aggregates up to 0.79" (20mm) of precipitation.

When does it start to snow in Denver?

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

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

In October, the average day length in Denver, Colorado, is 11h and 8min.

When is the sunrise / sunset in October in Denver?

On the first day of October, sunrise is at 6:56 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:58 pm MDT.

How many hours of sunshine does Denver have in October?

The average sunshine duration in October is 7.4h.

What is the UV index reading in October in Denver?

In Denver, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
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 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"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 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").
The 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).
The 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: 11h and 1min

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 October: 7h and 2min

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 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

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 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

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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Denver, Colorado, USA

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