September weather forecast
Harbell, KY

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Weather in September

The first month of the autumn, September, is still a warm month in Harbell, Kentucky, with an average temperature fluctuating between 78.4°F (25.8°C) and 56.7°F (13.7°C).

Temperature

September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's 84.7°F (29.3°C) to a still moderately hot 78.4°F (25.8°C). During September, Harbell perceives a consistent contrast from the daytime highs, with an average low-temperature of 56.7°F (13.7°C).

Humidity

April, June through September and November, with an average relative humidity of 77%, are the least humid months.

Rainfall

September is the month with the least rainfall. Rain falls for 14 days and accumulates 2.2" (56mm) of precipitation.

Snowfall

May through September 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 7:06 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:19 pm EDT.

Sunshine

In September, the average sunshine is 8.4h.

UV index

In Harbell, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Harbell in September?

In September, in Harbell, the average high-temperature is 78.4°F (25.8°C), and the average low-temperature is 56.7°F (13.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is calculated to be 95°F (35°C).

What are the least humid months?

April, June through September and November, with an average relative humidity of 77%, are the least humid months.

What is the average humidity in September?

In September, the average relative humidity is 77%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 14 days and accumulates 2.2" (56mm) of precipitation.

How many days does it rain in September?

In Harbell, in September, during 14 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow?

In Harbell, snow does not fall in May through September.

Does it snow in September?

In Harbell, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In Harbell, the average day length in September is 12h and 24min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:06 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:19 pm EDT.

How many hours of sunshine does Harbell have in September?

In September, the average sunshine duration is 8.4h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Harbell, KY

Average temperature in September - Harbell, KY
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in September
Harbell, KY

Average pressure in September - Harbell, KY
  • Average pressure in September: 30.04"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
Harbell, KY

Average wind speed in September - Harbell, KY
  • Average wind speed in September: 4mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in September
Harbell, KY

Average humidity in September - Harbell, KY
  • Average humidity in September: 77%

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are April, June, July, August, September and November (77%).

Average rainfall in September
Harbell, KY

Average rainfall in September - Harbell, KY
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is February (4.69").
The driest month (with the least rainfall) is September (2.2").

Average rainfall days in September
Harbell, KY

Average rainfall days in September - Harbell, KY
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is November (11.5 days).

Average snowfall in September
Harbell, KY

Average snowfall in September - Harbell, KY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.21").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Harbell, KY

Average snowfall days in September - Harbell, KY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (9.5 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
Harbell, KY

Average daylight in September / Average sunshine in September - Harbell, KY
  • Average daylight in September: 12h and 2min

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 2min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in September
Harbell, KY

Average sunshine days in September - Harbell, KY
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is February (9 days).

Average UV index in September
Harbell, KY

Average UV index in September - Harbell, 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
Harbell, KY

Average cloud cover in September - Harbell, KY
  • Average cloud cover in September: 34

The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September
Harbell, KY

Average visibility in September - Harbell, KY
  • Average visibility in September: 5mi

The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).

Harbell, Kentucky, USA

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