September weather forecastKnotts Island, NC
September
Weather in September
September, the first month of the autumn in Knotts Island, is still a warm month, with an average temperature ranging between min 70.3°F (21.3°C) and max 77.9°F (25.5°C).Temperature
The average high-temperature in September, at a still moderately hot 77.9°F (25.5°C), reveals a modest deviation from August's 82.9°F (28.3°C). Throughout September, Knotts Island observes a steady low-temperature average of 70.3°F (21.3°C), reflecting a minor dip from daytime highs.Humidity
In September, the average relative humidity in Knotts Island is 76%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 1.54" (39mm) of precipitation is accumulated. In Knotts Island, during the entire year, the rain falls for 134.5 days and collects up to 14.21" (361mm) of precipitation.Snowfall
In Knotts Island, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:31 pm. On the last day of September, in Knotts Island, sunrise is at 6:58 am and sunset at 6:48 pm EDT.
Sunshine
In Knotts Island, North Carolina, the average sunshine in September is 9.5h.UV index
In Knotts Island, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Undertake protective steps - Preventing sun damage is advised. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knotts Island, NC
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 70.3°F
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).
Average pressure in September
Knotts Island, NC
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Knotts Island, NC
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is March (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Knotts Island, NC
- Average humidity in September: 76%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are October and November (74%).
Average rainfall in September
Knotts Island, NC
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in September
Knotts Island, NC
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is August (15.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Knotts Island, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Knotts Island, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Knotts Island, 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: 9h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Knotts Island, NC
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in September
Knotts Island, NC
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Knotts Island, NC
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in September
Knotts Island, NC
- 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).
