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 onset of September brings a small shift in high-temperatures, falling from a warm 85.8°F (29.9°C) in August to a still moderately hot 79.3°F (26.3°C). Swamp Branch experiences a significant downturn from peak daytime temperatures throughout September, with the average low-temperature dipping to a mild 57.4°F (14.1°C).Humidity
In Swamp Branch, the average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 13 days and accumulates 1.77" (45mm) of precipitation.Snowfall
In Swamp Branch, snow does not fall in May through September.Daylight
In Swamp Branch, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:02 am and sunset at 8:00 pm. On the last day of September, in Swamp Branch, sunrise is at 7:26 am and sunset at 7:15 pm EDT.
Sunshine
The average sunshine in September in Swamp Branch is 8.3h.UV index
In Swamp Branch, Kentucky, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Guard yourself - Precautionary measures against sun damage are advocated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the usual temperature for Swamp Branch in September?
What is the average humidity in September in Swamp Branch?
What is the driest month in Swamp Branch?
How many days does it rain in September in Swamp Branch?
When it does not snow in Swamp Branch?
Does it snow in Swamp Branch in September?
How many hours of daylight does Swamp Branch have in September?
What time are sunrise and sunset in September in Swamp Branch?
How many hours of sunshine does Swamp Branch have in September?
How high is the UV index in September in Swamp Branch?
Average temperature in September
Swamp Branch, KY
- Average high temperature in September: 79.3°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (40.3°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in September
Swamp Branch, KY
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Swamp Branch, KY
- Average wind speed in September: 4.4mph
The windiest months (with the highest average wind speed) are January, February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Swamp Branch, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Swamp Branch, KY
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is February (3.27").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Swamp Branch, KY
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in September
Swamp Branch, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.78").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Swamp Branch, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Swamp Branch, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Swamp Branch, KY
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in September
Swamp Branch, KY
- 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, February and December (UV index 2).
Average cloud cover in September
Swamp Branch, KY
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Swamp Branch, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Swamp Branch, Kentucky, USA
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