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 starts September with an average high-temperature of a warm 85.1°F (29.5°C), hinting at a minimal fluctuation from August. Shelby experiences an average low-temperature of 66.7°F (19.3°C) in the month of September.Heat index
The average heat index in September is computed to be a tropical 93.2°F (34°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in September is 71%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.42" (36mm) of precipitation.Snowfall
In Shelby, snow does not fall in April through October.Daylight
In September, the average length of the day in Shelby 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
The average sunshine in September in Shelby is 9.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 5 in September transforms into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. It's recommended to limit sun exposure when its radiation is at its peak during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
How hot is it in Shelby in September?
What is the average humidity in September in Shelby?
What is the driest month in Shelby?
How many days does it rain in September in Shelby?
When it does not snow in Shelby?
What is the average length of the day in September in Shelby?
When is the sunrise / sunset in September in Shelby?
How long on average sun shines in September in Shelby?
What is the UV index reading in September in Shelby?
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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