September weather forecast and climate
Rustic, CO

Weather in September

September, the first month of the autumn, in Rustic, is also an enjoyable month, with average temperature fluctuating between 66.6°F (19.2°C) and 43.7°F (6.5°C).

Temperature

In Rustic, the average high-temperature in September slightly decreases, from a pleasant 73.2°F (22.9°C) in August, to a comfortable 66.6°F (19.2°C). In Rustic, in September, the average low-temperature is 43.7°F (6.5°C).

Humidity

June, August and September, with an average relative humidity of 48%, are the least humid months.

Rainfall

In Rustic, it is raining for 10.7 days, with typically 1.18" (30mm) of accumulated precipitation. In Rustic, during the entire year, the rain falls for 122.3 days and collects up to 18.15" (461mm) of precipitation.

Snowfall

Months with snowfall are January through June, August through December. In September, in Rustic, it is snowing for 1.5 days. Throughout September, 0.75" (19mm) of snow is accumulated. In Rustic, during the entire year, snow falls for 103.4 days, and aggregates up to 71.97" (1828mm) of snow.

Daylight

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

Sunshine

In September, the average sunshine is 10.8h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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 September in Rustic?

In September, in Rustic, the average high-temperature is 66.6°F (19.2°C), and the average low-temperature is 43.7°F (6.5°C).

What is the least humid month in Rustic?

Months with the lowest humidity are June, August and September, with an average relative humidity of 48%.

What is the average humidity in September in Rustic?

The average relative humidity in September in Rustic, Colorado, is 48%.

How much does it rain in Rustic in September?

In Rustic, Colorado, in September, during 10.7 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

How many days does it snow in September in Rustic?

In Rustic, during September, snow falls for 1.5 days and regularly aggregates up to 0.75" (19mm) of snow.

How many hours of daylight does Rustic have in September?

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

How long on average sun shines in September in Rustic?

In September, the average sunshine is 10.8h.

What is the UV index intensity in September in Rustic?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Rustic, CO

Average temperature in September - Rustic, CO
  • Average high temperature in September: 66.6°F

The warmest month (with the highest average high temperature) is July (74.3°F).
The month with the lowest average high temperature is December (28.6°F).

  • Average low temperature in September: 43.7°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is December (13.3°F).

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Average pressure in September
Rustic, CO

Average pressure in September - Rustic, CO
  • Average pressure in September: 29.99"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in September
Rustic, CO

Average wind speed in September - Rustic, CO
  • Average wind speed in September: 8.2mph

The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in September
Rustic, CO

Average humidity in September - Rustic, CO
  • Average humidity in September: 48%

The month with the highest relative humidity is February (75%).
Months with the lowest relative humidity are June, August and September (48%).

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Average rainfall in September
Rustic, CO

Average rainfall in September - Rustic, CO
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in September
Rustic, CO

Average rainfall days in September - Rustic, CO
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (4.2 days).

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Average snowfall in September
Rustic, CO

Average snowfall in September - Rustic, CO
  • Average snowfall in September: 0.75"

The month with the highest snowfall is April (14.88").
The month with the least snowfall is July (0").

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Average snowfall days in September
Rustic, CO

Average snowfall days in September - Rustic, CO
  • Average snowfall days in September: 1.5 days

The month with the highest number of snowfall days is March (15.8 days).
The month with the least snowfall days is July (0 days).

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

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

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 10.8h

The month with the most sunshine is June (Average sunshine: 11.4h).
The month with the least sunshine is February (Average sunshine: 6.4h).

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Average sunshine days in September
Rustic, CO

Average sunshine days in September - Rustic, CO
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (7.2 days).

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Average UV index in September
Rustic, CO

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

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

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Average cloud cover in September
Rustic, CO

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

Months with the most cloud cover are February, April and May (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 19).

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Average visibility in September
Rustic, CO

Average visibility in September - Rustic, 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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