September weather forecastLeawood, KS
September
Weather in September
September marks the transition from summer to autumn in Leawood, reflected in the cooling climate and shifting weather patterns. A noticeable drop in temperatures is apparent as they range between 59.7°F (15.4°C) and 78.4°F (25.8°C). The hours of sunlight reducing to 12.4 hours and rainfall dwindling steadily provide indications of fall's arrival. The decreased daylight duration and falling temperatures amplify the autumn setting. Despite the dwindling temperature, the relative humidity remains constant, keeping the days slightly warmer.Temperature
The beginning of September in Leawood subtly marks a decrease in the average high-temperature, transitioning from 84.9°F (29.4°C) in August to a still moderately hot 78.4°F (25.8°C). Throughout September, the temperature in Leawood tends to fall to a consistent average low of 59.7°F (15.4°C).Humidity
In Leawood, the average relative humidity in September is 74%.Rainfall
In Leawood, during September, the rain falls for 5.5 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Leawood, during the entire year, the rain falls for 62.3 days and collects up to 4.76" (121mm) of precipitation.Snowfall
In Leawood, snow does not fall in April, June through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:48 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September is 9.3h.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 unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Leawood, KS
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in September
Leawood, KS
- Average pressure in September: 30.01"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).
Average wind speed in September
Leawood, KS
- Average wind speed in September: 7.2mph
The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Leawood, KS
- Average humidity in September: 74%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Leawood, KS
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is May (0.71").
The driest month (with the least rainfall) is November (0.16").
Average rainfall days in September
Leawood, KS
- Average rainfall days in September: 5.5 days
The months with the highest number of rainy days are May and July (8.3 days).
The month with the least rainy days is January (2.2 days).
Average snowfall in September
Leawood, KS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in September
Leawood, KS
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Leawood, KS
- Average daylight in September: 12h and 24min
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: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Leawood, KS
- Average sunshine days in September: 22.9 days
The month with the most sunshine days is January (27.3 days).
The month with the least sunshine days is May (19.7 days).
Average UV index in September
Leawood, KS
- Average UV index in September: 5
The months with the highest UV index are May, 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
Leawood, KS
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Leawood, 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).
