September weather forecast
Plum, KY

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Weather in September

The first month of the autumn, September, is still a warm month in Plum, Kentucky, with an average temperature varying between 58.5°F (14.7°C) and 78.3°F (25.7°C).

Temperature

A minor decrease in the average high-temperature is observed during September, shifting from 84.2°F (29°C) in August to a still moderately hot 78.3°F (25.7°C). An average minimum temperature of 58.5°F (14.7°C) is recorded during the month of September.

Humidity

In Plum, the average relative humidity in September is 76%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.17" (55mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Plum, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 7:06 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:20 pm EDT.

Sunshine

In Plum, the average sunshine in September is 8.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

In September, in Plum, the average high-temperature is 78.3°F (25.7°C), and the average low-temperature is 58.5°F (14.7°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is computed to be 93.2°F (34°C).

What is the average humidity in September?

The average relative humidity in September is 76%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.17" (55mm) of precipitation.

How many days does it rain in September in Plum?

In Plum, in September, it is raining for 12.5 days, with typically 2.17" (55mm) of accumulated precipitation.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In September, the average day length is 12h and 25min.

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 8:05 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:20 pm EDT.

How many hours of sunshine does Plum have in September?

In Plum, Kentucky, the average sunshine duration in September is 8.2h.

How high is the UV index in September?

In Plum, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's 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
Plum, KY

Average temperature in September - Plum, KY
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in September: 58.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

Average pressure in September
Plum, KY

Average pressure in September - Plum, KY
  • Average pressure in September: 30.04"Hg

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in September
Plum, KY

Average wind speed in September - Plum, KY
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Plum, KY

Average humidity in September - Plum, KY
  • Average humidity in September: 76%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (75%).

Average rainfall in September
Plum, KY

Average rainfall in September - Plum, KY
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in September
Plum, KY

Average rainfall days in September - Plum, KY
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (9.9 days).

Average snowfall in September
Plum, KY

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

The month with the highest snowfall is February (3.07").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Plum, KY

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

The month with the highest number of snowfall days is January (10.2 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
Plum, KY

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in September
Plum, KY

Average sunshine days in September - Plum, KY
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is February (9.4 days).

Average UV index in September
Plum, KY

Average UV index in September - Plum, 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, November and December (UV index 2).

Average cloud cover in September
Plum, KY

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

The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September
Plum, KY

Average visibility in September - Plum, 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).

Plum, Kentucky, USA

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