Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a hot 88.9°F (31.6°C) to a moderately hot 81.1°F (27.3°C). Throughout September, an average low-temperature of 59.7°F (15.4°C) is expected.Heat index
For most parts of September, the heat index is evaluated at 82.4°F (28°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
In Clayton, the average relative humidity in September is 57%.Rainfall
In Clayton, in September, it is raining for 10 days, with typically 1.22" (31mm) of accumulated precipitation. Throughout the year, there are 109.1 rainfall days, and 17.01" (432mm) of precipitation is accumulated.Snowfall
In Clayton, snow does not fall in June through September.Daylight
In Clayton, Kansas, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:09 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:24 pm CDT.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during September translates into the following guidance:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September in Clayton?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September in Clayton?
How many hours of sunshine does Clayton have in September?
What is the UV index intensity in September?
Average temperature in September
Clayton, KS
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in September
Clayton, KS
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Clayton, KS
- Average wind speed in September: 10.4mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).
Average humidity in September
Clayton, KS
- Average humidity in September: 57%
The month with the highest relative humidity is January (69%).
The month with the lowest relative humidity is July (54%).
Average rainfall in September
Clayton, KS
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Clayton, KS
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is May (14.6 days).
The months with the least rainy days are February and December (3.5 days).
Average snowfall in September
Clayton, KS
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Clayton, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clayton, 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 24min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Clayton, KS
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is December (24 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in September
Clayton, KS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Clayton, KS
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
Clayton, 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).
Clayton, Kansas, USA
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