September weather forecastFarmington, AR
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Farmington, Arkansas, with an average temperature fluctuating between 61.2°F (16.2°C) and 81°F (27.2°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a tropical 87.8°F (31°C) to a moderately hot 81°F (27.2°C). Farmington observes an average low-temperature of 61.2°F (16.2°C) during September.Heat index
The heat index in September is computed to be a hot 86°F (30°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.The heat index's values are generally associated with conditions in shade and light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
The average relative humidity in September is 74%.Rainfall
In Farmington, Arkansas, during September, the rain falls for 12.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 148.4 rainfall days, and 32.24" (819mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:11 am and sunset at 7:01 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during September translates into the following guidance:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Farmington, AR
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Farmington, AR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Farmington, AR
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Farmington, AR
- Average humidity in September: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Farmington, AR
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in September
Farmington, AR
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Farmington, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Farmington, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Farmington, AR
- Average daylight in September: 12h and 24min
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 48min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Farmington, AR
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is December (19.4 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in September
Farmington, AR
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Farmington, AR
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Farmington, 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).
