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
With the commencement of September, Dennis records a moderate temperature decline, with the average high easing from August's hot 87.1°F (30.6°C) to a warm 80.2°F (26.8°C). Dennis records a steady low-temperature average of 61.5°F (16.4°C) during September.Humidity
The average relative humidity in September is 74%.Rainfall
In Dennis, Kansas, during September, the rain falls for 10.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 114.4 rainfall days, and 19.69" (500mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Dennis.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:52 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:05 pm CDT.
Sunshine
The average sunshine in September 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 health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Dennis have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Dennis have in September?
What is the UV index reading in September?
Average temperature in September
Dennis, KS
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in September: 61.5°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 (27.1°F).
Average pressure in September
Dennis, KS
- Average pressure in September: 30"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
Dennis, KS
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is March (11.2mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in September
Dennis, KS
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Dennis, KS
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is November (0.51").
Average rainfall days in September
Dennis, KS
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is December (4.6 days).
Average snowfall in September
Dennis, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Dennis, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Dennis, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Dennis, KS
- Average sunshine days in September: 17.2 days
The months with the most sunshine days are January and December (23.1 days).
The month with the least sunshine days is May (14.6 days).
Average UV index in September
Dennis, 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, February and December (UV index 2).
Average cloud cover in September
Dennis, KS
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are June, July and August (Cloud cover 24).
Average visibility in September
Dennis, 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).
Dennis, Kansas, USA
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