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
Shelby experiences a minor change to a moderately hot 85.1°F (29.5°C) in average high-temperature during September, closely reflecting August. In the month of September, Shelby's average low-temperature falls to an enjoyable 66.7°F (19.3°C).Heat index
The heat index value for September is estimated at a hot 93.2°F (34°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In Shelby, the average relative humidity in September is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.42" (36mm) of precipitation.Snowfall
In Shelby, Mississippi, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:48 pm CDT.
Sunshine
In September, the average sunshine is 9.7h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
What is the driest month in Shelby?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Shelby have 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
Shelby, MS
- Average high temperature in September: 85.1°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 (50.2°F).
- Average low temperature in September: 66.7°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
Shelby, MS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Shelby, MS
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Shelby, MS
- Average humidity in September: 71%
The months with the highest relative humidity are February, March and December (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Shelby, MS
- Average rainfall in September: 1.42"
The wettest months (with the highest rainfall) are April and May (3.46").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Shelby, MS
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is October (8.3 days).
Average snowfall in September
Shelby, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Shelby, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 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
Shelby, MS
- 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: 9h and 54min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Shelby, MS
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (21.1 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in September
Shelby, MS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Shelby, MS
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Shelby, MS
- 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).
Shelby, Mississippi, USA
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