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 arrival of September in Siloam Springs signals a subtle shift in temperature, down from a tropical 88.5°F (31.4°C) in August to a moderately hot 81.7°F (27.6°C). Throughout the month of September, Siloam Springs sees a steady low-temperature average of 61.7°F (16.5°C).Heat index
During September, the heat index is evaluated at a hot 86°F (30°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In Siloam Springs, the average relative humidity in September is 73%.Rainfall
In Siloam Springs, during September, the rain falls for 13.7 days and regularly aggregates up to 2.76" (70mm) of precipitation. Throughout the year, there are 156 rainfall days, and 34.41" (874mm) of precipitation is accumulated.Snowfall
In Siloam Springs, snow does not fall in April, June through October.Daylight
In Siloam Springs, the average length of the day in September 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, sunrise is at 7:13 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September in Siloam Springs, Arkansas, is 9.4h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What are September temperatures in Siloam Springs?
What is the average humidity in September in Siloam Springs?
How much does it rain in Siloam Springs in September?
When it does not snow in Siloam Springs?
What is the average length of the day in September in Siloam Springs?
When is the sunrise / sunset in September in Siloam Springs?
How long on average sun shines in September in Siloam Springs?
What is the UV index intensity in September in Siloam Springs?
Average temperature in September
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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
Siloam Springs, AR
- 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).
Siloam Springs, Arkansas, USA
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