September weather forecast and climate
Ouray, CO

The colorful city of Ouray set between high mountains in Colorado
The colorful city of Ouray set between high mountains in Colorado

Weather in September

The first month of the autumn, September, is also a moderate month in Ouray, Colorado, with average temperature varying between 36.1°F (2.3°C) and 57.9°F (14.4°C).

Temperature

In September, the average high-temperature is practically the same as in August - a mild 57.9°F (14.4°C). The average low-temperature, in Ouray, is 36.1°F (2.3°C).

Humidity

In Ouray, the average relative humidity in September is 62%.

Rainfall

In Ouray, Colorado,, it is raining for 13 days, with typically 2.05" (52mm) of accumulated precipitation. In Ouray, Colorado, during the entire year, the rain falls for 98.2 days and collects up to 26.65" (677mm) of precipitation.

Snowfall

Months with snowfall are January through June, August through December. In Ouray, in September, during 2.4 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Ouray, Colorado, during the entire year, snow falls for 102 days, and aggregates up to 101.02" (2566mm) of snow.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In Ouray, the average sunshine is 10.5h.

UV index

In Ouray, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in September in Ouray?

In Ouray, the average relative humidity in September is 62%.

How many days does it rain in September in Ouray?

In September, in Ouray, the rain falls for 13 days. Throughout September, 2.05" (52mm) of precipitation is accumulated.

How many days does it snow in September in Ouray?

In Ouray, Colorado, during September, snow falls for 2.4 days and regularly aggregates up to 1.77" (45mm) of snow.

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

In Ouray, Colorado, the average length of the day in September is 12.4h.

How long on average sun shines in September in Ouray?

In September, the average sunshine in Ouray, Colorado, is 10.5h.

How high is the UV index in September in Ouray?

The average daily maximum UV index in September in Ouray is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in September
Ouray, CO

Average temperature in September - Ouray, CO
  • Average high temperature in September: 57.9°F

The warmest month (with the highest average high temperature) is July (65.1°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in September: 36.1°F

The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is January (2.8°F).

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Average pressure in September
Ouray, CO

Average pressure in September - Ouray, CO
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is January (30.23").
The month with the lowest atmospheric pressure is May (29.92").

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Average wind speed in September
Ouray, CO

Average wind speed in September - Ouray, CO
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).

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Average humidity in September
Ouray, CO

Average humidity in September - Ouray, CO
  • Average humidity in September: 62%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (47%).

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Average rainfall in September
Ouray, CO

Average rainfall in September - Ouray, CO
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in September
Ouray, CO

Average rainfall days in September - Ouray, CO
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is July (23.8 days).
Months with the least rainy days are January and February (1.3 days).

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Average snowfall in September
Ouray, CO

Average snowfall in September - Ouray, CO
  • Average snowfall in September: 1.77"

The month with the highest snowfall is March (16.26").
The month with the least snowfall is July (0").

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Average snowfall days in September
Ouray, CO

Average snowfall days in September - Ouray, CO
  • Average snowfall days in September: 2.4 days

The month with the highest number of snowfall days is April (16.5 days).
The month with the least snowfall days is July (0 days).

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

Average daylight in September / Average sunshine in September - Ouray, CO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 10.5h

The month with the most sunshine is June (Average sunshine: 11.6h).
Months with the least sunshine are February and December (Average sunshine: 5.7).

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Average sunshine days in September
Ouray, CO

Average sunshine days in September - Ouray, CO
  • Average sunshine days in September: 12.8 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (5.3 days).

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Average UV index in September
Ouray, CO

Average UV index in September - Ouray, CO
  • Average UV index in September: 3

Months with the highest UV index are June, July and August (UV index 4).
Months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in September
Ouray, CO

Average cloud cover in September - Ouray, CO
  • Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 15).

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Average visibility in September
Ouray, CO

Average visibility in September - Ouray, CO
  • Average visibility in September: 6mi

Months with the highest visibility are May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February and December (4mi).

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