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 average high-temperature slightly decreases in September, shifting from a hot 88.5°F (31.4°C) in August to a warm 81.7°F (27.6°C). An average low-temperature of 61.7°F (16.5°C) is expected in West Siloam Springs during September.Heat index
The heat index in September is appraised at a hot 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
In West Siloam Springs, the average relative humidity in September is 73%.Rainfall
In West Siloam Springs, in September, during 13.7 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, in West Siloam Springs, there are 156 rainfall days, and 34.41" (874mm) of precipitation is accumulated.Snowfall
In West Siloam Springs, Oklahoma, snow does not fall in April, June through October.Daylight
The average length of the day in September in West Siloam Springs is 12h and 24min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:45 pm. On the last day of September, in West Siloam Springs, Oklahoma, sunrise is at 7:13 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September is 9.4h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for West Siloam Springs in September?
What is the average humidity in September?
How much does it rain in West Siloam Springs in September?
When it does not snow?
How many hours of daylight does West Siloam Springs have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does West Siloam Springs have in September?
How high is the UV index in September?
Average temperature in September
West Siloam Springs, OK
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
West Siloam Springs, OK
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).
Average wind speed in September
West Siloam Springs, OK
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
West Siloam Springs, OK
- Average humidity in September: 73%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in September
West Siloam Springs, OK
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
West Siloam Springs, OK
- Average rainfall days in September: 13.7 days
The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
West Siloam Springs, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
West Siloam Springs, OK
- Average snowfall days in September: 0.1 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
West Siloam Springs, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in September
West Siloam Springs, OK
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in September
West Siloam Springs, OK
- 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 and December (UV index 2).
Average cloud cover in September
West Siloam Springs, OK
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
West Siloam Springs, OK
- 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).
West Siloam Springs, Oklahoma, USA
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