September weather forecastLenexa, KS
September
Weather in September
September in Lenexa, Kansas typically signifies the onset of fall, offering relief from the summer heat. The drop in temperature from August's highs is significant, giving way to a more pleasant climate. September showcases lower rainfall at 2.4" (61mm), marking a drop from August's levels. However, the significant decrease in humidity and milder temperatures make this month well-suited for enjoying outdoor activities. September's weather gradually cools further, leading into the distinct season change of October.Temperature
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from 85.5°F (29.7°C) in August to a still moderately hot 78.4°F (25.8°C). In Lenexa, September nights cool down to an average of 59.9°F (15.5°C).Humidity
The average relative humidity in September is 74%.Rainfall
In Lenexa, during September, the rain falls for 12.1 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Lenexa, during the entire year, the rain falls for 131.6 days and collects up to 27.01" (686mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Lenexa, the average length of the day in September 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 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lenexa, KS
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in September
Lenexa, 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
Lenexa, KS
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are February, March and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Lenexa, 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
Lenexa, KS
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Lenexa, KS
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Lenexa, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lenexa, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lenexa, 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 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Lenexa, KS
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in September
Lenexa, 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
Lenexa, KS
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Lenexa, 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).
