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
The transition to September results in a modest reduction in average high-temperature, moving from a hot 86.4°F (30.2°C) in August to a warm 79.5°F (26.4°C). Allen's average low-temperature in the month of September is recorded at a refreshing 60.3°F (15.7°C).Humidity
In September, the average relative humidity is 70%.Rainfall
In Allen, in September, it is raining for 11 days, with typically 1.3" (33mm) of accumulated precipitation. In Allen, during the entire year, the rain falls for 111.2 days and collects up to 18.62" (473mm) of precipitation.Snowfall
In Allen, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:08 pm CDT.
Sunshine
In Allen, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index in Allen is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 5 in September leads to these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Allen in September?
What is the average humidity in September in Allen?
How much does it rain in Allen in September?
When it does not snow in Allen?
Does it snow in Allen in September?
How many hours of daylight does Allen have in September?
When are sunrise and sunset in September in Allen?
How long on average sun shines in September in Allen?
What is the UV index reading in September in Allen?
Average temperature in September
Allen, KS
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in September
Allen, KS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Allen, KS
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in September
Allen, KS
- Average humidity in September: 70%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is October (64%).
Average rainfall in September
Allen, KS
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Allen, KS
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in September
Allen, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Allen, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Allen, 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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 42min).
Average sunshine days in September
Allen, KS
- Average sunshine days in September: 17 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is July (13.7 days).
Average UV index in September
Allen, 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, November and December (UV index 2).
Average cloud cover in September
Allen, KS
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in September
Allen, 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).
Allen, Kansas, USA
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