September weather forecast
Federal Heights, CO

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Weather in September

September in Federal Heights welcomes the onset of fall along with temperatures varying from 52.7°F (11.5°C) to 78.6°F (25.9°C). Waving farewell to rain, this month sees rainfall drop significantly to 0.55" (14mm). A simultaneous dip in daylight hours to 12.4 still provides enough time for catching the sun. Thawing from the summer heat spike, the UV index decreases to 5. The pressure persists at 30.01in keeping climatic conditions within the range of normal.

Temperature

The commencement of September indicates a gentle shift in the average high-temperature, receding from August's tropical 86.2°F (30.1°C) to a moderately hot 78.6°F (25.9°C). Federal Heights experiences a dramatic descent in temperature during September, with the average nighttime reading settling at a cool 52.7°F (11.5°C).

Humidity

In Federal Heights, Colorado, the average relative humidity in September is 41%.

Rainfall

In Federal Heights, Colorado, in September, it is raining for 7.9 days, with typically 0.55" (14mm) of accumulated precipitation. Throughout the year, there are 101.9 rainfall days, and 10.91" (277mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Federal Heights.

Daylight

In Federal Heights, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:43 pm MDT.

Sunshine

In September, the average sunshine is 11h.

UV index

In Federal Heights, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the usual temperature for Federal Heights in September?

An average high-temperature, in September, in Federal Heights, is 78.6°F (25.9°C) and the average low-temperature is 52.7°F (11.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 86°F (30°C).

What is the average humidity in September in Federal Heights?

In Federal Heights, Colorado, the average relative humidity in September is 41%.

How many days does it rain in September in Federal Heights?

In Federal Heights, in September, during 7.9 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

When it does not snow in Federal Heights?

In Federal Heights, snow does not fall in June through September.

Does it snow in Federal Heights in September?

In Federal Heights, Colorado, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Federal Heights have in September?

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

What time are sunrise and sunset in September in Federal Heights?

On the first day of September, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:43 pm MDT.

How many hours of sunshine does Federal Heights have in September?

In September, the average sunshine duration in Federal Heights is 11h.

What is the UV index reading in September in Federal Heights?

In September, the average daily maximum UV index in Federal Heights is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Federal Heights, CO

Average temperature in September - Federal Heights, CO
  • Average high temperature in September: 78.6°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure in September
Federal Heights, CO

Average pressure in September - Federal Heights, CO
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

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Average wind speed in September
Federal Heights, CO

Average wind speed in September - Federal Heights, CO
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest months (with the lowest average wind speed) are August, September and December (5.8mph).

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Average humidity in September
Federal Heights, CO

Average humidity in September - Federal Heights, CO
  • Average humidity in September: 41%

The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (40%).

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Average rainfall in September
Federal Heights, CO

Average rainfall in September - Federal Heights, CO
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is May (2.05").
The driest months (with the least rainfall) are January and December (0.35").

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Average rainfall days in September
Federal Heights, CO

Average rainfall days in September - Federal Heights, CO
  • Average rainfall days in September: 7.9 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in September
Federal Heights, CO

Average snowfall in September - Federal Heights, CO
  • Average snowfall in September: 0"

The month with the highest snowfall is April (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Federal Heights, CO

Average snowfall days in September - Federal Heights, CO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (9.4 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
Federal Heights, CO

Average daylight in September / Average sunshine in September - Federal Heights, CO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 11h and 0min

The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days in September
Federal Heights, CO

Average sunshine days in September - Federal Heights, CO
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index in September
Federal Heights, CO

Average UV index in September - Federal Heights, 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
Federal Heights, CO

Average cloud cover in September - Federal Heights, CO
  • Average cloud cover in September: 15

The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).

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Average visibility in September
Federal Heights, CO

Average visibility in September - Federal Heights, 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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Federal Heights, Colorado, USA

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