September weather forecast
Rye, CO

Weather in September

September, the first month of the autumn, in Rye, is still a pleasant month, with average temperature fluctuating between 45°F (7.2°C) and 68.5°F (20.3°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 74.3°F (23.5°C) in August, to a pleasant 68.5°F (20.3°C). In Rye, the average low-temperature is 45°F (7.2°C).

Humidity

The average relative humidity in September is 53%.

Rainfall

In Rye, in September, it is raining for 12.5 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, there are 125.5 rainfall days, and 19.84" (504mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Rye. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 73.4 snowfall days, and 53.07" (1348mm) of snow is accumulated.

Daylight

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

Sunshine

The average sunshine in September is 11.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. 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 average humidity in September in Rye?

In September, the average relative humidity in Rye is 53%.

How many days does it rain in September in Rye?

In Rye, in September, it is raining for 12.5 days, with typically 1.38" (35mm) of accumulated precipitation.

When does it start snowing in Rye?

September is the first month it typically snows in Rye. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Rye have in September?

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

How long on average sun shines in September in Rye?

In September, the average sunshine in Rye is 11.1h.

How high is the UV index in September in Rye?

The average daily maximum UV index in September in Rye is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Rye, CO

Average temperature in September - Rye, CO
  • Average high temperature in September: 68.5°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 (32.4°F).

  • Average low temperature in September: 45°F

The month with the highest average low temperature is July (51.4°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).

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Average pressure in September
Rye, CO

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

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is April (29.9").

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Average wind speed in September
Rye, CO

Average wind speed in September - Rye, CO
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are February, March and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in September
Rye, CO

Average humidity in September - Rye, CO
  • Average humidity in September: 53%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is June (43%).

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Average rainfall in September
Rye, CO

Average rainfall in September - Rye, CO
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is July (3.7").
The driest month (with the least rainfall) is November (0.63").

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Average rainfall days in September
Rye, CO

Average rainfall days in September - Rye, CO
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (3.3 days).

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Average snowfall in September
Rye, CO

Average snowfall in September - Rye, CO
  • Average snowfall in September: 0.04"

The month with the highest snowfall is March (9.37").
Months with the least snowfall are July and August (0").

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Average snowfall days in September
Rye, CO

Average snowfall days in September - Rye, CO
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is February (12.3 days).
Months with the least snowfall days are July and August (0 days).

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

Average daylight in September / Average sunshine in September - Rye, 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: 11.1h

The month with the most sunshine is June (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.7h).

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Average sunshine days in September
Rye, CO

Average sunshine days in September - Rye, CO
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (22 days).
The month with the least sunshine days is July (6 days).

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Average UV index in September
Rye, CO

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

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

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Average cloud cover in September
Rye, CO

Average cloud cover in September - Rye, CO
  • Average cloud cover in September: 16

The month with the most cloud cover is February (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 14).

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Average visibility in September
Rye, CO

Average visibility in September - Rye, CO
  • Average visibility in September: 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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