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
September ushers in a minor alteration in Windsor's climate, with the average high-temperature moving from August's hot 87.3°F (30.7°C) to a moderately hot 81.9°F (27.7°C). Windsor experiences an average temperature drop to a refreshing 64.9°F (18.3°C) during September nights.Heat index
For most parts of September, the heat index is calculated to be a tropical 87.8°F (31°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. 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 especially vital to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
May, August, September and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In Windsor, during September, the rain falls for 9.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 120.6 rainfall days, and 12.44" (316mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Windsor, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:40 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:52 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the most humid month in Windsor?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Windsor, NC
- Average high temperature in September: 81.9°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 (48.7°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in September
Windsor, NC
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are November and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Windsor, NC
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Windsor, NC
- Average humidity in September: 79%
The months with the highest relative humidity are May, August, September and December (79%).
The month with the lowest relative humidity is January (75%).
Average rainfall in September
Windsor, NC
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is June (1.61").
The driest months (with the least rainfall) are January and December (0.71").
Average rainfall days in September
Windsor, NC
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (13.5 days).
The months with the least rainy days are January and November (6.9 days).
Average snowfall in September
Windsor, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Windsor, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Windsor, NC
- 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: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Windsor, NC
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in September
Windsor, NC
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Windsor, NC
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 34).
Average visibility in September
Windsor, NC
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
The months with the lowest visibility are May, August and September (5mi).
Windsor, North Carolina, USA
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