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
Edwardsville's weather in September indicates an average high-temperature of a warm 83.3°F (28.5°C), nearly consistent with the 87.8°F (31°C) of August. In the month of September, the average temperature dips to a refreshing 63.5°F (17.5°C) during the night.Heat index
The heat index in September is appraised at a tropical 91.4°F (33°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
The average relative humidity in September is 76%.Rainfall
In Edwardsville, in September, during 13.4 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 186 rainfall days, and 41.89" (1064mm) of precipitation is accumulated.Snowfall
In Edwardsville, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:16 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:27 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 5 in September transforms into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September in Edwardsville?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Edwardsville, AL
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (50.4°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Edwardsville, AL
- 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 (29.98"Hg).
Average wind speed in September
Edwardsville, AL
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Edwardsville, AL
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Edwardsville, AL
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is August (4.45").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in September
Edwardsville, AL
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (23.1 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Edwardsville, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Edwardsville, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.7 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
Edwardsville, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Edwardsville, AL
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (6.8 days).
Average UV index in September
Edwardsville, AL
- 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
Edwardsville, AL
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Edwardsville, AL
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, July, August, September and December (5mi).
Edwardsville, Alabama, USA
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