September weather forecast
Yellow Jacket, CO

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Weather in September

The first month of the autumn, September, is still a warm month in Yellow Jacket, Colorado, with temperature in the range of an average low of 54.1°F (12.3°C) and an average high of 75°F (23.9°C).

Temperature

The beginning of September brings a minor change in the average high-temperature, shifting from 82°F (27.8°C) in August to a still warm 75°F (23.9°C). Yellow Jacket's nighttime temperature in September drops to an average of 54.1°F (12.3°C).

Humidity

The average relative humidity in September in Yellow Jacket is 40%.

Rainfall

In September, in Yellow Jacket, the rain falls for 6.3 days. Throughout September, 0.47" (12mm) of precipitation is accumulated. Throughout the year, there are 78.9 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

Snowfall

In Yellow Jacket, snow does not fall in May through September.

Daylight

In Yellow Jacket, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:58 pm MDT.

Sunshine

In Yellow Jacket, the average sunshine in September is 10.9h.

UV index

In September, the average daily maximum UV index in Yellow Jacket is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Yellow Jacket in September?

The high-temperature, in September, in Yellow Jacket, records 75°F (23.9°C), while the low-temperature is 54.1°F (12.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 80.6°F (27°C).

What is the average humidity in September in Yellow Jacket?

In Yellow Jacket, Colorado, the average relative humidity in September is 40%.

How much does it rain in Yellow Jacket in September?

In September, in Yellow Jacket, the rain falls for 6.3 days. Throughout September, 0.47" (12mm) of precipitation is accumulated.

When it does not snow in Yellow Jacket?

In Yellow Jacket, snow does not fall in May through September.

Does it snow in Yellow Jacket in September?

In Yellow Jacket, Colorado, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Yellow Jacket?

The average day length in September in Yellow Jacket, Colorado, is 12h and 25min.

When are sunrise and sunset in September in Yellow Jacket?

In September, on the first day of the month, sunrise is at 6:45 am and sunset at 7:43 pm. On the last day of the month, in Yellow Jacket, Colorado, sunrise is at 7:10 am and sunset at 6:58 pm MDT.

How many hours of sunshine does Yellow Jacket have in September?

In September, the average sunshine duration in Yellow Jacket is 10.9h.

What is the UV index intensity in September in Yellow Jacket?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe 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
Yellow Jacket, CO

Average temperature in September - Yellow Jacket, CO
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in September: 54.1°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Yellow Jacket, CO

Average pressure in September - Yellow Jacket, CO
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Yellow Jacket, CO

Average wind speed in September - Yellow Jacket, CO
  • Average wind speed in September: 6.9mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).

Average humidity in September
Yellow Jacket, CO

Average humidity in September - Yellow Jacket, CO
  • Average humidity in September: 40%

The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is June (26%).

Average rainfall in September
Yellow Jacket, CO

Average rainfall in September - Yellow Jacket, CO
  • Average rainfall in September: 0.47"

The wettest months (with the highest rainfall) are January and December (1.26").
The driest month (with the least rainfall) is June (0.2").

Average rainfall days in September
Yellow Jacket, CO

Average rainfall days in September - Yellow Jacket, CO
  • Average rainfall days in September: 6.3 days

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is June (2.8 days).

Average snowfall in September
Yellow Jacket, CO

Average snowfall in September - Yellow Jacket, CO
  • Average snowfall in September: 0"

The month with the highest snowfall is January (8.11").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Yellow Jacket, CO

Average snowfall days in September - Yellow Jacket, CO
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and December (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Yellow Jacket, CO

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 30min).

Average sunshine days in September
Yellow Jacket, CO

Average sunshine days in September - Yellow Jacket, CO
  • Average sunshine days in September: 21.9 days

The month with the most sunshine days is June (26.2 days).
The month with the least sunshine days is February (17.6 days).

Average UV index in September
Yellow Jacket, CO

Average UV index in September - Yellow Jacket, 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).

Average cloud cover in September
Yellow Jacket, CO

Average cloud cover in September - Yellow Jacket, CO
  • Average cloud cover in September: 10

The months with the most cloud cover are January and December (Cloud cover 27).
The month with the least cloud cover is June (Cloud cover 9).

Average visibility in September
Yellow Jacket, CO

Average visibility in September - Yellow Jacket, 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).

Yellow Jacket, Colorado, USA

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