September weather forecast
Chapman, KS

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Chapman, Kansas, with an average temperature fluctuating between 81.1°F (27.3°C) and 61.2°F (16.2°C).

Temperature

Chapman experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a tropical 88.3°F (31.3°C) in August to a moderately hot 81.1°F (27.3°C). During the nights in September, Chapman experiences a consistent average temperature of 61.2°F (16.2°C).

Heat index

The average heat index in September is calculated to be 84.2°F (29°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

The average relative humidity in September is 66%.

Rainfall

In September, the rain falls for 10.1 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. In Chapman, Kansas, during the entire year, the rain falls for 104.5 days and collects up to 18.58" (472mm) of precipitation.

Snowfall

In Chapman, snow does not fall in May through September.

Daylight

In Chapman, the average length of the day in September is 12h and 26min.
On the first day of September in Chapman, sunrise is at 6:57 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:11 pm CDT.

Sunshine

The average sunshine in September in Chapman is 8.9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the UV index of 5 transforms into the following advice:
Make use of precautions - It is urged to ward off sun damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Chapman?

In Chapman, in September, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 61.2°F (16.2°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 84.2°F (29°C).

What is the average humidity in September in Chapman?

The average relative humidity in September in Chapman is 66%.

How much does it rain in Chapman in September?

In Chapman, during September, the rain falls for 10.1 days and regularly aggregates up to 1.38" (35mm) of precipitation.

When it does not snow in Chapman?

In Chapman, Kansas, snow does not fall in May through September.

Does it snow in Chapman in September?

In Chapman, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Chapman have in September?

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

When is the sunrise / sunset in September in Chapman?

In September, on the first day of the month, sunrise is at 6:57 am and sunset at 7:58 pm. On the last day of the month, in Chapman, Kansas, sunrise is at 7:23 am and sunset at 7:11 pm CDT.

How long on average sun shines in September in Chapman?

The average sunshine duration in September in Chapman, Kansas, is 8.9h.

How high is the UV index in September in Chapman?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Chapman, KS

Average temperature in September - Chapman, KS
  • Average high temperature in September: 81.1°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in September: 61.2°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 (23.4°F).

Average pressure in September
Chapman, KS

Average pressure in September - Chapman, KS
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Chapman, KS

Average wind speed in September - Chapman, KS
  • Average wind speed in September: 9.8mph

The windiest month (with the highest average wind speed) is April (12mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).

Average humidity in September
Chapman, KS

Average humidity in September - Chapman, KS
  • Average humidity in September: 66%

The month with the highest relative humidity is May (73%).
The months with the lowest relative humidity are July and October (63%).

Average rainfall in September
Chapman, KS

Average rainfall in September - Chapman, KS
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in September
Chapman, KS

Average rainfall days in September - Chapman, KS
  • Average rainfall days in September: 10.1 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.4 days).

Average snowfall in September
Chapman, KS

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

The month with the highest snowfall is February (2.44").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Chapman, KS

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

The month with the highest number of snowfall days is February (4.2 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
Chapman, KS

Average daylight in September / Average sunshine in September - Chapman, KS
  • 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: 8h and 5min

The months with the most sunshine are June and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in September
Chapman, KS

Average sunshine days in September - Chapman, KS
  • Average sunshine days in September: 18.1 days

The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is July (14.6 days).

Average UV index in September
Chapman, KS

Average UV index in September - Chapman, 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, November and December (UV index 2).

Average cloud cover in September
Chapman, KS

Average cloud cover in September - Chapman, KS
  • Average cloud cover in September: 25

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is June (Cloud cover 21).

Average visibility in September
Chapman, KS

Average visibility in September - Chapman, 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).

Chapman, Kansas, USA

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