September weather forecast
Coffeyville, KS

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Weather in September

With the arrival of September, Coffeyville witnesses a clear break from the sweltering summer months. The average high temperature drops noticeably to 80.8°F (27.1°C), marking the transition towards autumn. While residents enjoy the mellow sun and the crisp autumn air, rainfall totals drop to 2.68" (68mm). The gradual cooling down from the summer heat marks the beginning of fall, displaying beautiful fall foliage. October brings a bit more cooler weather, and the cozy warm shades of autumn become more prevalent.

Temperature

September reveals a small adjustment in temperature, transitioning from an average high of a hot 88.2°F (31.2°C) in August to a warm 80.8°F (27.1°C). In Coffeyville, in September, the average low-temperature is a comfortable 62.2°F (16.8°C).

Heat index

During September, the heat index is evaluated at 84.2°F (29°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

The average relative humidity in September in Coffeyville is 73%.

Rainfall

In Coffeyville, in September, during 12.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Coffeyville, Kansas, during the entire year, the rain falls for 133.1 days and collects up to 29.21" (742mm) of precipitation.

Snowfall

In Coffeyville, snow does not fall in April, June through October.

Daylight

In Coffeyville, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 6:53 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:06 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

In Coffeyville, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What is the usual temperature for Coffeyville in September?

The high-temperature, in September, in Coffeyville, records 80.8°F (27.1°C), while the low-temperature is 62.2°F (16.8°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 84.2°F (29°C).

What is the average humidity in September in Coffeyville?

In Coffeyville, the average relative humidity in September is 73%.

How many days does it rain in September in Coffeyville?

In Coffeyville, during September, the rain falls for 12.3 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Coffeyville?

April, June through October are months without snowfall.

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

The average day length in September is 12h and 24min.

When are sunrise and sunset in September in Coffeyville?

In September, on the first day of the month, sunrise is at 6:53 am and sunset at 7:50 pm. On the last day of the month, in Coffeyville, sunrise is at 7:17 am and sunset at 7:06 pm CDT.

How many hours of sunshine does Coffeyville have in September?

In Coffeyville, the average sunshine duration in September is 8.9h.

How high is the UV index in September in Coffeyville?

The average daily maximum UV index in September in Coffeyville, Kansas, is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Coffeyville, KS

Average temperature in September - Coffeyville, KS
  • Average high temperature in September: 80.8°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (43.3°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

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Average pressure in September
Coffeyville, KS

Average pressure in September - Coffeyville, KS
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in September
Coffeyville, KS

Average wind speed in September - Coffeyville, KS
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

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Average humidity in September
Coffeyville, KS

Average humidity in September - Coffeyville, KS
  • Average humidity in September: 73%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and October (69%).

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Average rainfall in September
Coffeyville, KS

Average rainfall in September - Coffeyville, KS
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is May (5.28").
The driest month (with the least rainfall) is November (1.06").

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Average rainfall days in September
Coffeyville, KS

Average rainfall days in September - Coffeyville, KS
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in September
Coffeyville, KS

Average snowfall in September - Coffeyville, KS
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, June, July, August, September and October (0").

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Average snowfall days in September
Coffeyville, KS

Average snowfall days in September - Coffeyville, KS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Coffeyville, KS

Average daylight in September / Average sunshine in September - Coffeyville, KS
  • 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 42min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in September
Coffeyville, KS

Average sunshine days in September - Coffeyville, KS
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.5 days).

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Average UV index in September
Coffeyville, KS

Average UV index in September - Coffeyville, KS
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in September
Coffeyville, KS

Average cloud cover in September - Coffeyville, KS
  • Average cloud cover in September: 28

The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 24).

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Average visibility in September
Coffeyville, KS

Average visibility in September - Coffeyville, KS
  • 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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Coffeyville, Kansas, USA

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