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
September brings a slight decrease in temperature, down from a hot 91°F (32.8°C) in August to a moderately hot 83.1°F (28.4°C). During September, the temperature tends to dip to an average of 64°F (17.8°C) at night.Heat index
For September, the heat index is computed to be a hot 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
In Isabel, the average relative humidity in September is 61%.Rainfall
In Isabel, during September, the rain falls for 12.5 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, there are 119.9 rainfall days, and 22.48" (571mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall in Isabel.Daylight
In Isabel, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:05 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:18 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
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 Isabel have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Isabel have in September?
What is the UV index reading in September?
Average temperature in September
Isabel, KS
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in September
Isabel, 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 (29.85"Hg).
Average wind speed in September
Isabel, KS
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is April (12.5mph).
The calmest month (with the lowest average wind speed) is August (9.2mph).
Average humidity in September
Isabel, KS
- Average humidity in September: 61%
The month with the highest relative humidity is May (67%).
The month with the lowest relative humidity is July (56%).
Average rainfall in September
Isabel, KS
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (4.21").
The driest months (with the least rainfall) are January and February (0.79").
Average rainfall days in September
Isabel, KS
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (4 days).
Average snowfall in September
Isabel, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Isabel, 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 June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Isabel, 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: 9h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Isabel, KS
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in September
Isabel, KS
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Isabel, KS
- Average cloud cover in September: 24
The months with the most cloud cover are March and April (Cloud cover 34).
The months with the least cloud cover are June and August (Cloud cover 19).
Average visibility in September
Isabel, 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).
Isabel, Kansas, USA
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