September weather forecast
Flagler, CO

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Flagler, Colorado, with an average temperature ranging between min 55.8°F (13.2°C) and max 76.8°F (24.9°C).

Temperature

A mild shift in the average high-temperature occurs in September, reducing from 84°F (28.9°C) in August to a still moderately hot 76.8°F (24.9°C). Flagler registers a consistent average low-temperature of 55.8°F (13.2°C) during September.

Humidity

June and September, with an average relative humidity of 46%, are the least humid months in Flagler.

Rainfall

In Flagler, during September, the rain falls for 8.2 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Flagler, during the entire year, the rain falls for 83.6 days and collects up to 9.41" (239mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Flagler, during the entire year, snow falls for 26.7 days and aggregates up to 9.02" (229mm) of snow.

Daylight

The average length of the day in September in Flagler is 12h and 26min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:22 pm. On the last day of September, in Flagler, sunrise is at 6:48 am and sunset at 6:35 pm MDT.

Sunshine

In September, the average sunshine is 10.6h.

UV index

The average daily maximum UV index in September in Flagler is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in September in Flagler?

The high-temperature, in September, in Flagler, records 76.8°F (24.9°C), while the low-temperature is 55.8°F (13.2°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 84.2°F (29°C).

What is the least humid month in Flagler?

The months with the lowest humidity in Flagler, Colorado, are June and September, with an average relative humidity of 46%.

What is the average humidity in September in Flagler?

In Flagler, Colorado, the average relative humidity in September is 46%.

How many days does it rain in September in Flagler?

In Flagler, Colorado, in September, it is raining for 8.2 days, with typically 0.55" (14mm) of accumulated precipitation.

When does it start to snow in Flagler?

September is the first month it typically snows in Flagler, Colorado. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Flagler have in September?

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

When are sunrise and sunset in September in Flagler?

On the first day of September in Flagler, Colorado, sunrise is at 6:21 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:35 pm MDT.

How many hours of sunshine does Flagler have in September?

The average sunshine duration in September in Flagler is 10.6h.

What is the UV index reading in September in Flagler?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe 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
Flagler, CO

Average temperature in September - Flagler, CO
  • Average high temperature in September: 76.8°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (39°F).

  • Average low temperature in September: 55.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).

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Average pressure in September
Flagler, CO

Average pressure in September - Flagler, CO
  • Average pressure in September: 29.95"Hg

The months with the highest atmospheric pressure are January and December (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in September
Flagler, CO

Average wind speed in September - Flagler, CO
  • Average wind speed in September: 9.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

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Average humidity in September
Flagler, CO

Average humidity in September - Flagler, CO
  • Average humidity in September: 46%

The month with the highest relative humidity is February (63%).
The months with the lowest relative humidity are June and September (46%).

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Average rainfall in September
Flagler, CO

Average rainfall in September - Flagler, CO
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in September
Flagler, CO

Average rainfall days in September - Flagler, CO
  • Average rainfall days in September: 8.2 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (1.7 days).

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Average snowfall in September
Flagler, CO

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

The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Flagler, CO

Average snowfall days in September - Flagler, CO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Flagler, 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 4min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

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Average sunshine days in September
Flagler, CO

Average sunshine days in September - Flagler, CO
  • Average sunshine days in September: 18.4 days

The month with the most sunshine days is December (24.9 days).
The month with the least sunshine days is July (13.4 days).

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Average UV index in September
Flagler, CO

Average UV index in September - Flagler, CO
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Flagler, CO

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

The months with the most cloud cover are February and April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).

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Average visibility in September
Flagler, CO

Average visibility in September - Flagler, 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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Flagler, Colorado, USA

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