September weather forecast
Deckers, CO

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Weather in September

The first month of the autumn, September, is still a pleasant month in Deckers, Colorado, with an average temperature fluctuating between 68.9°F (20.5°C) and 45°F (7.2°C).

Temperature

The commencement of September indicates a gentle shift in the average high-temperature, receding from August's moderately hot 74.7°F (23.7°C) to a pleasant 68.9°F (20.5°C). A marked difference from the daytime temperatures, Deckers's nighttime temperature falls to an average low of 45°F (7.2°C) in September.

Humidity

In September, the average relative humidity in Deckers is 51%.

Rainfall

In September, the rain falls for 13.5 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. In Deckers, during the entire year, the rain falls for 134.5 days and collects up to 19.65" (499mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 60.9 snowfall days, and 47.28" (1201mm) of snow is accumulated.

Daylight

The average length of the day in September in Deckers, Colorado, is 12h and 26min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:44 pm MDT.

Sunshine

In Deckers, the average sunshine in September is 10.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. It's recommended to limit sun exposure when its radiation is at its peak during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What are September temperatures in Deckers?

In Deckers, 68.9°F (20.5°C) is the average high-temperature and 45°F (7.2°C) is the average low-temperature during September.

What is the average humidity in September in Deckers?

In Deckers, the average relative humidity in September is 51%.

How much does it rain in Deckers in September?

In Deckers, during September, the rain falls for 13.5 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When does it start to snow in Deckers?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow.

What is the average length of the day in September in Deckers?

In Deckers, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September in Deckers?

In September, on the first day of the month, sunrise is at 6:30 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm MDT.

How long on average sun shines in September in Deckers?

The average sunshine duration in September in Deckers, Colorado, is 10.9h.

What is the UV index intensity in September in Deckers?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from 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 September
Deckers, CO

Average temperature in September - Deckers, CO
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in September: 45°F

The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is February (15.1°F).

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Average pressure in September
Deckers, CO

Average pressure in September - Deckers, CO
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.92"Hg).

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Average wind speed in September
Deckers, CO

Average wind speed in September - Deckers, CO
  • Average wind speed in September: 5.6mph

The windiest months (with the highest average wind speed) are February and March (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Deckers, CO

Average humidity in September - Deckers, CO
  • Average humidity in September: 51%

The month with the highest relative humidity is February (73%).
The month with the lowest relative humidity is June (47%).

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Average rainfall in September
Deckers, CO

Average rainfall in September - Deckers, CO
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in September
Deckers, CO

Average rainfall days in September - Deckers, CO
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (23.7 days).
The month with the least rainy days is November (3.5 days).

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Average snowfall in September
Deckers, CO

Average snowfall in September - Deckers, CO
  • Average snowfall in September: 0.08"

The month with the highest snowfall is March (9.72").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Deckers, CO

Average snowfall days in September - Deckers, CO
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (11.1 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Deckers, CO

Average daylight in September / Average sunshine in September - Deckers, CO
  • Average daylight in September: 12h and 2min

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 30min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days in September
Deckers, CO

Average sunshine days in September - Deckers, CO
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is July (4.3 days).

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Average UV index in September
Deckers, CO

Average UV index in September - Deckers, CO
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in September
Deckers, CO

Average cloud cover in September - Deckers, CO
  • Average cloud cover in September: 17

The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are September, October and November (Cloud cover 17).

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Average visibility in September
Deckers, CO

Average visibility in September - Deckers, CO
  • Average visibility in September: 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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Deckers, Colorado, USA

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