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 indicates a minor shift in the average high-temperature, from August's hot 91°F (32.8°C) to a warm 84.6°F (29.2°C). An average low-temperature of 63.7°F (17.6°C) is common during the nights of September.Heat index
September's mean heat index is evaluated at a tropical 93.2°F (34°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In September, the average relative humidity is 74%.Rainfall
In Hempwallace, during September, the rain falls for 11.9 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Hempwallace, during the entire year, the rain falls for 148.1 days and collects up to 33.78" (858mm) of precipitation.Snowfall
In Hempwallace, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:46 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Hempwallace?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Hempwallace, AR
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Hempwallace, AR
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Hempwallace, AR
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Hempwallace, AR
- Average humidity in September: 74%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Hempwallace, AR
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in September
Hempwallace, AR
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in September
Hempwallace, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Hempwallace, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hempwallace, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Hempwallace, AR
- Average sunshine days in September: 16.5 days
The months with the most sunshine days are January and October (19.4 days).
The month with the least sunshine days is August (13.5 days).
Average UV index in September
Hempwallace, AR
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Hempwallace, AR
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 30).
Average visibility in September
Hempwallace, AR
- Average visibility in September: 6mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Hempwallace, Arkansas, USA
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