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
Alco's progression into September involves a gentle drop in the average high-temperature, from a tropical 89.4°F (31.9°C) in August to a moderately hot 82°F (27.8°C). September nights are marked by an average low-temperature of 61.3°F (16.3°C).Heat index
The heat index in September is calculated to be a hot 87.8°F (31°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 1.97" (50mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Alco, Arkansas, the average length of the day in September is 12h and 23min.On the first day of September in Alco, sunrise is at 6:41 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:54 pm CDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index in Alco is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What is the temperature in September in Alco?
What is the average humidity in September in Alco?
What is the driest month in Alco?
How many days does it rain in September in Alco?
When it does not snow in Alco?
How many hours of daylight does Alco have in September?
What time are sunrise and sunset in September in Alco?
How long on average sun shines in September in Alco?
How high is the UV index in September in Alco?
Average temperature in September
Alco, AR
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in September
Alco, AR
- Average pressure in September: 30.01"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
Alco, AR
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Alco, AR
- Average humidity in September: 75%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Alco, AR
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Alco, AR
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in September
Alco, AR
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Alco, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Alco, AR
- Average daylight in September: 12h and 2min
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 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Alco, AR
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in September
Alco, AR
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Alco, AR
- Average cloud cover in September: 29
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Alco, AR
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Alco, Arkansas, USA
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