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 reveals a small adjustment in temperature, transitioning from an average high of a hot 89.8°F (32.1°C) in August to a warm 82.4°F (28°C). Cotter logs a substantial downturn to a refreshing 60.4°F (15.8°C) during September nights, a considerable shift from daytime highs.Heat index
For most parts of September, the heat index is calculated to be a tropical 87.8°F (31°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in September in Cotter is 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 2.01" (51mm) of precipitation.Snowfall
In Cotter, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:54 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Be vigilant - Preventing sunburn is recommended. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September in Cotter?
What time are sunrise and sunset in September?
How many hours of sunshine does Cotter have in September?
How high is the UV index in September?
Average temperature in September
Cotter, AR
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in September
Cotter, 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
Cotter, AR
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February, March and April (7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Cotter, AR
- Average humidity in September: 74%
The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall in September
Cotter, AR
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Cotter, AR
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Cotter, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Cotter, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Cotter, 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 42min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Cotter, AR
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is January (19.5 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Cotter, 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 and December (UV index 2).
Average cloud cover in September
Cotter, AR
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Cotter, AR
- Average visibility in September: 5mi
The months with the highest visibility are January, February, June, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July, August and September (5mi).
Cotter, Arkansas, USA
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