September weather forecastRoper, KY
September
Weather in September
September, the first month of the autumn in Roper, is still a warm month, with an average temperature fluctuating between 81.5°F (27.5°C) and 62.4°F (16.9°C).Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from a tropical 86.9°F (30.5°C) in August to a moderately hot 81.5°F (27.5°C). Throughout the September nights, Roper encounters a low-temperature of 62.4°F (16.9°C).Heat index
For September, the heat index is computed to be a hot 86°F (30°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.The standards for the heat index are set for locations in shade and under light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In September, the average relative humidity is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.61" (41mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:39 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Roper, KY
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.2°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Roper, KY
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Roper, KY
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are January, February, March and April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in September
Roper, KY
- Average humidity in September: 73%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Roper, KY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in September
Roper, KY
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Roper, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Roper, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Roper, KY
- 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 18min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Roper, KY
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Roper, 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
Roper, KY
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Roper, KY
- 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).
