September weather forecastGillam Park, AR
September
Weather in September
September, the first month of the autumn in Gillam Park, is also a moderately hot month, with an average temperature ranging between min 65.1°F (18.4°C) and max 85.3°F (29.6°C).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's tropical 90.9°F (32.7°C) to a warm 85.3°F (29.6°C). Gillam Park observes an average nighttime temperature of 65.1°F (18.4°C) during September.Heat index
September's average heat index is calculated to be a hot 93.2°F (34°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
The average relative humidity in September is 71%.Rainfall
In Gillam Park, in September, it is raining for 10.5 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 133.5 rainfall days, and 18.94" (481mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Gillam Park is 12h and 23min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:54 pm CDT.
Sunshine
The average sunshine in September is 9.8h.UV index
In Gillam Park, Arkansas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 6 in September leads to these guidelines:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gillam Park, AR
- Average high temperature in September: 85.3°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 (48.7°F).
- Average low temperature in September: 65.1°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 (34.2°F).
Average pressure in September
Gillam Park, 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
Gillam Park, AR
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Gillam Park, AR
- Average humidity in September: 71%
The months with the highest relative humidity are March and December (77%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Gillam Park, AR
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Gillam Park, AR
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Gillam Park, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Gillam Park, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Gillam Park, AR
- Average daylight in September: 12h and 24min
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 48min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in September
Gillam Park, AR
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Gillam Park, AR
- Average UV index in September: 6
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
Gillam Park, AR
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Gillam Park, 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).





