September weather forecast
Dotsero, CO

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Weather in September

The first month of the autumn, September, is still a comfortable month in Dotsero, Colorado, with an average temperature varying between 66.7°F (19.3°C) and 37.9°F (3.3°C).

Temperature

Dotsero observes a small decrease in the average high-temperature with the arrival of September, falling from August's moderately hot 74.1°F (23.4°C) to a comfortable 66.7°F (19.3°C). Significant dips from daytime highs mark the September nights in Dotsero, with a consistent average temperature of 37.9°F (3.3°C).

Humidity

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

Rainfall

September is the month with the least rainfall in Dotsero. Rain falls for 11.3 days and accumulates 0.87" (22mm) of precipitation.

Snowfall

Months with snowfall in Dotsero are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Dotsero, during the entire year, snow falls for 99 days and aggregates up to 71.06" (1805mm) of snow.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:37 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:51 pm MDT.

Sunshine

The average sunshine in September in Dotsero, Colorado, is 11.1h.

UV index

In Dotsero, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the UV index of 3 transforms into the following advice:
Act with care - The need to guard against sun damage is communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Boost your sun resistance with garments that are densely woven yet spacious. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the usual temperature for Dotsero in September?

Dotsero in September has an average high-temperature of 66.7°F (19.3°C) and an average low-temperature of 37.9°F (3.3°C).

What is the average humidity in September in Dotsero?

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

What is the driest month in Dotsero?

September is the month with the least rainfall. Rain falls for 11.3 days and accumulates 0.87" (22mm) of precipitation.

How many days does it rain in September in Dotsero?

In September, in Dotsero, the rain falls for 11.3 days. Throughout September, 0.87" (22mm) of precipitation is accumulated.

When does it start snowing in Dotsero?

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

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

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

When is the sunrise / sunset in September in Dotsero?

In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:38 pm. On the last day of the month, in Dotsero, sunrise is at 7:04 am and sunset at 6:51 pm MDT.

How many hours of sunshine does Dotsero have in September?

In September, the average sunshine duration in Dotsero, Colorado, is 11.1h.

What is the UV index reading in September in Dotsero?

The average daily maximum UV index in September in Dotsero, Colorado, is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
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
Dotsero, CO

Average temperature in September - Dotsero, CO
  • Average high temperature in September: 66.7°F

The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in September: 37.9°F

The month with the highest average low temperature is July (44.2°F).
The coldest month (with the lowest average low temperature) is January (4.6°F).

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Average pressure in September
Dotsero, CO

Average pressure in September - Dotsero, CO
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is May (29.94"Hg).

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Average wind speed in September
Dotsero, CO

Average wind speed in September - Dotsero, CO
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

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Average humidity in September
Dotsero, CO

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

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is June (49%).

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Average rainfall in September
Dotsero, CO

Average rainfall in September - Dotsero, CO
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is April (2.36").
The driest month (with the least rainfall) is September (0.87").

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Average rainfall days in September
Dotsero, CO

Average rainfall days in September - Dotsero, CO
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (5.8 days).

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Average snowfall in September
Dotsero, CO

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

The month with the highest snowfall is February (13.74").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Dotsero, CO

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

The month with the highest number of snowfall days is February (18.9 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
Dotsero, CO

Average daylight in September / Average sunshine in September - Dotsero, 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 24min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).

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Average sunshine days in September
Dotsero, CO

Average sunshine days in September - Dotsero, CO
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is April (6.2 days).

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Average UV index in September
Dotsero, CO

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

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in September
Dotsero, CO

Average cloud cover in September - Dotsero, CO
  • Average cloud cover in September: 14

The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are June and September (Cloud cover 14).

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Average visibility in September
Dotsero, CO

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

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

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Dotsero, Colorado, USA

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