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
The arrival of September suggests a slight decrease in the average high-temperature, moving from a tropical 91.4°F (33°C) in August to a warm 84.7°F (29.3°C). The month of September sees a significant daily temperature drop, recording an average low-temperature of 62.6°F (17°C).Heat index
September's average heat index is computed to be a tropical 93.2°F (34°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly relevant to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity is 71%.Rainfall
In Washburn, during September, the rain falls for 10 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 123.6 rainfall days, and 20.55" (522mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Washburn, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:49 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 7:01 pm CDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Washburn have in September?
What is the UV index intensity in September?
Average temperature in September
Washburn, AR
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Washburn, 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
Washburn, AR
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Washburn, AR
- Average humidity in September: 71%
The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Washburn, AR
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Washburn, AR
- Average rainfall days in September: 10 days
The months with the highest number of rainy days are May and July (13.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Washburn, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Washburn, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 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
Washburn, AR
- Average daylight in September: 12h and 2min
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 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Washburn, AR
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
Washburn, AR
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Washburn, AR
- Average cloud cover in September: 26
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Washburn, 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).
Washburn, Arkansas, USA
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