September weather forecastHuntsville, AR
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Huntsville, Arkansas, with an average temperature varying between 79.7°F (26.5°C) and 59.5°F (15.3°C).Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a hot 87.1°F (30.6°C) in August to a moderately hot 79.7°F (26.5°C). During September, the nighttime temperature averages to a refreshing 59.5°F (15.3°C).Humidity
In September, the average relative humidity is 76%.Rainfall
In Huntsville, in September, during 14.3 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 160.8 rainfall days, and 33.66" (855mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:47 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:59 pm CDT.
Sunshine
In Huntsville, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. 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
Average temperature in September
Huntsville, AR
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Huntsville, AR
- Average pressure in September: 30.02"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
Huntsville, AR
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Huntsville, AR
- Average humidity in September: 76%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is January (73%).
Average rainfall in September
Huntsville, AR
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days in September
Huntsville, AR
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Huntsville, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Huntsville, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Huntsville, 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 12min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Huntsville, AR
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in September
Huntsville, 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, February and December (UV index 2).
Average cloud cover in September
Huntsville, AR
- Average cloud cover in September: 31
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Huntsville, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
