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 correlates with a minor temperature reduction, down from August's hot 88°F (31.1°C) to a warm 81°F (27.2°C). Throughout the nights in September, an average low-temperature of 60.6°F (15.9°C) is noted.Heat index
Throughout September, the heat index is calculated to be 84.2°F (29°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.The heat index's values are generally associated with conditions in shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
In Johnson, the average relative humidity in September is 73%.Rainfall
In Johnson, in September, it is raining for 14 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, in Johnson, there are 161.1 rainfall days, and 34.09" (866mm) of precipitation is accumulated.Snowfall
In Johnson, snow does not fall in June through October.Daylight
In September, the average length of the day in Johnson, Arkansas, is 12h and 23min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:43 pm. On the last day of September, in Johnson, Arkansas, sunrise is at 7:11 am and sunset at 7:01 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index in Johnson is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Adopt protective measures - It is advised to guard against sun damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the average September temperature in Johnson?
What is the average humidity in September in Johnson?
How many days does it rain in September in Johnson?
When it does not snow in Johnson?
How many hours of daylight does Johnson have in September?
When is the sunrise / sunset in September in Johnson?
How long on average sun shines in September in Johnson?
What is the UV index reading in September in Johnson?
Average temperature in September
Johnson, AR
- Average high temperature in September: 81°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 (44.4°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Johnson, 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
Johnson, AR
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Johnson, AR
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are August and October (72%).
Average rainfall in September
Johnson, AR
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in September
Johnson, AR
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in September
Johnson, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Johnson, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Johnson, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Johnson, AR
- Average sunshine days in September: 14.1 days
The months with the most sunshine days are January and December (18.5 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Johnson, 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
Johnson, AR
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Johnson, 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).
Johnson, Arkansas, USA
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