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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from 85.1°F (29.5°C) to a still moderately hot 78.3°F (25.7°C). In Stilwell, an average low-temperature of 59.9°F (15.5°C) is recorded during September nights.Humidity
In Stilwell, Kansas, the average relative humidity in September is 75%.Rainfall
In Stilwell, in September, it is raining for 11.9 days, with typically 2.56" (65mm) of accumulated precipitation. In Stilwell, during the entire year, the rain falls for 134.5 days and collects up to 28.78" (731mm) of precipitation.Snowfall
In Stilwell, snow does not fall in June through September.Daylight
In Stilwell, the average length of the day in September is 12h and 26min.On the first day of September in Stilwell, 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
In Stilwell, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index in Stilwell is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Stilwell?
What is the average humidity in September in Stilwell?
How much does it rain in Stilwell in September?
When it does not snow in Stilwell?
Does it snow in Stilwell in September?
What is the average length of the day in September in Stilwell?
What time are sunrise and sunset in September in Stilwell?
How many hours of sunshine does Stilwell have in September?
How high is the UV index in September in Stilwell?
Average temperature in September
Stilwell, KS
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (86.9°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 (23.2°F).
Average pressure in September
Stilwell, 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
Stilwell, KS
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Stilwell, KS
- Average humidity in September: 75%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are October and November (70%).
Average rainfall in September
Stilwell, KS
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Stilwell, KS
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Stilwell, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stilwell, 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
Stilwell, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Stilwell, KS
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (22.2 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in September
Stilwell, 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
Stilwell, KS
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Stilwell, 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).
Stilwell, Kansas, USA
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