September weather forecastBoone, NC
September
Weather in September
In September, Boone begins to transition to cooler weather while still holding on to the remnants of the summer. The rainfall decreases considerably to 1.85" (47mm), the lowest in the year, offering a clear distinction from August. Reduced temperatures and less frequent rainfall allow for a more comfortable month. Lower humidity and wind speeds joined by plentiful sunshine hours portray an agreeable end of summer. Moving further into the year with October, the residents can start to prepare for a cooler weather setup with reduced temperatures and increased rainfall.Temperature
As Boone steps into September, the average high-temperature is measured at a still warm 75.4°F (24.1°C), displaying minor differences from August's 80.2°F (26.8°C). An average low-temperature of 54.9°F (12.7°C) is recorded in the month of September in Boone.Humidity
February, May, September and December, with an average relative humidity of 79%, are the most humid months.Rainfall
September is the month with the least rainfall in Boone. Rain falls for 15.2 days and accumulates 1.85" (47mm) of precipitation.Snowfall
In Boone, North Carolina, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:11 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Boone, North Carolina, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Boone, NC
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in September
Boone, NC
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Boone, NC
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Boone, NC
- Average humidity in September: 79%
The months with the highest relative humidity are February, May, September and December (79%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Boone, NC
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Boone, NC
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Boone, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Boone, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Boone, NC
- Average daylight in September: 12h and 24min
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 42min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Boone, NC
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is November (17.3 days).
The months with the least sunshine days are February and May (9.3 days).
Average UV index in September
Boone, NC
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Boone, NC
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Boone, NC
- Average visibility in September: 5mi
The months with the highest visibility are June, July and November (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October and December (5mi).
