September weather forecastHiwasse, AR
September
Weather in September
The first month of the autumn, September, is still a warm month in Hiwasse, Arkansas, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 61.7°F (16.5°C).Temperature
The advent of September brings a subtle shift in temperature, with the average high moving from a tropical 88.9°F (31.6°C) in August to a warm 81.7°F (27.6°C). Throughout September, the average low-temperature in Hiwasse dips to an enjoyable 61.7°F (16.5°C).Heat index
In September, the average 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.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The average relative humidity in September is 72%.Rainfall
In Hiwasse, during September, the rain falls for 11 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Hiwasse, during the entire year, the rain falls for 139.4 days and collects up to 30.91" (785mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
In Hiwasse, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:49 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:01 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Hiwasse, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hiwasse, AR
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (90.5°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 (69.6°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Hiwasse, 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
Hiwasse, AR
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Hiwasse, AR
- Average humidity in September: 72%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Hiwasse, AR
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days in September
Hiwasse, AR
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are January and November (8.5 days).
Average snowfall in September
Hiwasse, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Hiwasse, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hiwasse, 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 42min).
- Average sunshine in September: 9h and 24min
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 24min).
Average sunshine days in September
Hiwasse, AR
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is December (19.2 days).
The months with the least sunshine days are March and April (13.3 days).
Average UV index in September
Hiwasse, AR
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Hiwasse, 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
Hiwasse, 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).
