October weather forecast and climate
Brighton, CO

Trees on partly frozen lake water in Barr Lake State Park in Brighton, Colorado
Trees on partly frozen lake water in Barr Lake State Park in Brighton, Colorado

Weather in October

October, the same as September, is another enjoyable autumn month in Brighton, Colorado, with average temperature varying between 40.3°F (4.6°C) and 63.5°F (17.5°C).

Temperature

In Brighton, the average high-temperature significantly decreases, from a moderately hot 79.7°F (26.5°C) in September, to an enjoyable 63.5°F (17.5°C). The average low-temperature, is 40.3°F (4.6°C).

Humidity

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

Rainfall

In Brighton, during October, the rain falls for 5.4 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, in Brighton, there are 80.6 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 2.5 snowfall days, it receives 1.69" (43mm) of snow. Throughout the year, there are 30.9 snowfall days, and 11.42" (290mm) of snow is accumulated.

Daylight

In Brighton, the average length of the day is 11.1h.

Sunshine

The average sunshine in October is 7.4h.

UV index

The average daily maximum UV index in Brighton, Colorado, is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk 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. 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 October in Brighton?

In Brighton, in October, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 40.3°F (4.6°C).

What is the average humidity in October in Brighton?

The average relative humidity in October in Brighton, Colorado, is 47%.

How much does it rain in Brighton in October?

In Brighton, Colorado, during October, the rain falls for 5.4 days and regularly aggregates up to 0.43" (11mm) of precipitation.

When does it start to snow in Brighton?

October is the first month it typically snows in Brighton. Throughout October, in the average 2.5 snowfall days, it receives 1.69" (43mm) of snow.

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

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

How long on average sun shines in October in Brighton?

In Brighton, Colorado, the average sunshine in October is 7.4h.

How high is the UV index in October in Brighton?

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in October
Brighton, CO

Average temperature in October - Brighton, CO
  • Average high temperature in October: 63.5°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (40.8°F).

  • Average low temperature in October: 40.3°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure in October
Brighton, CO

Average pressure in October - Brighton, CO
  • Average pressure in October: 30.02"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in October
Brighton, CO

Average wind speed in October - Brighton, CO
  • Average wind speed in October: 6.3mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (6mph).

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Average humidity in October
Brighton, CO

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

Months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in October
Brighton, CO

Average rainfall in October - Brighton, CO
  • Average rainfall in October: 0.43"

The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is December (0.12").

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Average rainfall days in October
Brighton, CO

Average rainfall days in October - Brighton, CO
  • Average rainfall days in October: 5.4 days

The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (2.6 days).

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Average snowfall in October
Brighton, CO

Average snowfall in October - Brighton, CO
  • Average snowfall in October: 1.69"

The month with the highest snowfall is February (1.89").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Brighton, CO

Average snowfall days in October - Brighton, CO
  • Average snowfall days in October: 2.5 days

The month with the highest number of snowfall days is February (6.8 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
Brighton, CO

Average daylight in October / Average sunshine in October - Brighton, 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 and July (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.6h).

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Average sunshine days in October
Brighton, CO

Average sunshine days in October - Brighton, CO
  • Average sunshine days in October: 22.7 days

The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in October
Brighton, CO

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

Months with the highest UV index are June, July and August (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
Brighton, CO

Average cloud cover in October - Brighton, CO
  • Average cloud cover in October: 19

The month with the most cloud cover is April (Cloud cover 28).
Months with the least cloud cover are June, August and September (Cloud cover 16).

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Average visibility in October
Brighton, CO

Average visibility in October - Brighton, 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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