September weather forecastHorseshoe Lake, AR
September
Weather in September
The first month of the autumn, September, is still a warm month in Horseshoe Lake, Arkansas, with an average temperature varying between 65.5°F (18.6°C) and 83.7°F (28.7°C).Temperature
September is marked by an average high-temperature of a warm 83.7°F (28.7°C), almost identical to the preceding month. During September, Horseshoe Lake consistently records a temperature low averaging a refreshing 65.5°F (18.6°C).Heat index
The heat index value during September is calculated to be a hot 91.4°F (33°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. 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 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In Horseshoe Lake, the average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.73" (44mm) of precipitation.Snowfall
In Horseshoe Lake, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:46 pm CDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Horseshoe Lake, AR
- Average high temperature in September: 83.7°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (47.1°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Horseshoe Lake, 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
Horseshoe Lake, AR
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in September
Horseshoe Lake, AR
- Average humidity in September: 73%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Horseshoe Lake, AR
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Horseshoe Lake, AR
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in September
Horseshoe Lake, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Horseshoe Lake, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.4 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
Horseshoe Lake, AR
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Horseshoe Lake, AR
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (12.7 days).
Average UV index in September
Horseshoe Lake, AR
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Horseshoe Lake, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Horseshoe Lake, 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).
