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 move into September indicates a slight reduction in the average high-temperature, down from August's tropical 88.3°F (31.3°C) to a warm 82.4°F (28°C). Shelby, during the month of September, experiences an average low-temperature of 61.7°F (16.5°C).Heat index
The heat index for September is appraised at a tropical 87.8°F (31°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Note that heat index values are valued for light wind and location in the shade. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
The average relative humidity in September is 74%.Rainfall
The months with the least rainfall in Shelby are September and October Rain falls for 12.5 days and accumulates 2.13" (54mm) of rain.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:59 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Shelby have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Shelby, NC
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in September
Shelby, NC
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Shelby, NC
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Shelby, NC
- Average humidity in September: 74%
The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Shelby, NC
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is December (3.46").
The driest months (with the least rainfall) are September and October (2.13").
Average rainfall days in September
Shelby, NC
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Shelby, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Shelby, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 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, NC
- 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Shelby, NC
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Shelby, NC
- 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
Shelby, NC
- Average cloud cover in September: 33
The months with the most cloud cover are February, March and December (Cloud cover 42).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in September
Shelby, NC
- 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).
Shelby, North Carolina, USA
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