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
In Rockcastle, entering September brings a subtle temperature decrement, reducing from August's tropical 86.5°F (30.3°C) to a warm 81.1°F (27.3°C). Rockcastle experiences an average nighttime temperature of 61.7°F (16.5°C) in the month of September.Heat index
The average heat index in September is calculated to be a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
The average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.73" (44mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Rockcastle is 12h and 24min.On the first day of September, sunrise is at 6:23 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:36 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index in Rockcastle is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What is the average September temperature in Rockcastle?
What is the average humidity in September in Rockcastle?
What is the driest month in Rockcastle?
How many days does it rain in September in Rockcastle?
When it does not snow in Rockcastle?
Does it snow in Rockcastle in September?
How many hours of daylight does Rockcastle have in September?
When is the sunrise / sunset in September in Rockcastle?
How long on average sun shines in September in Rockcastle?
What is the UV index intensity in September in Rockcastle?
Average temperature in September
Rockcastle, KY
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Rockcastle, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Rockcastle, KY
- Average wind speed in September: 6mph
The windiest months (with the highest average wind speed) are February and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
Rockcastle, KY
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Rockcastle, KY
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is February (4.45").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Rockcastle, KY
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is March (16.4 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Rockcastle, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rockcastle, KY
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rockcastle, 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 42min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in September
Rockcastle, KY
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in September
Rockcastle, 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
Rockcastle, KY
- Average cloud cover in September: 28
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in September
Rockcastle, KY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Rockcastle, Kentucky, USA
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