September weather forecast
Porter Junction, KY

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Weather in September

The first month of the autumn, September, is still a warm month in Porter Junction, Kentucky, with an average temperature ranging between max 79.3°F (26.3°C) and min 56.8°F (13.8°C).

Temperature

Porter Junction's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 85.6°F (29.8°C) to a still warm 79.3°F (26.3°C). Porter Junction reports a marked divergence from daytime peaks throughout September, with lows averaging at a moderate 56.8°F (13.8°C).

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.5 days and typically collects 1.85" (47mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

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 7:59 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:15 pm EDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

In Porter Junction, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 5 in September translates into this advice:
Exercise prevention - Warding off sunburn is urged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

What are the temperatures in Porter Junction in September?

The average high-temperature, in September, in Porter Junction, is 79.3°F (26.3°C), while the average low-temperature is 56.8°F (13.8°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 96.8°F (36°C).

What is the average humidity in September?

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

What is the driest month?

September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 1.85" (47mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 13.5 days. Throughout September, 1.85" (47mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does Porter Junction have in September?

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

When are sunrise and sunset in September in Porter Junction?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:15 pm EDT.

How many hours of sunshine does Porter Junction have in September?

The average sunshine duration in September is 8.3h.

What is the UV index intensity in September?

In Porter Junction, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk 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
Porter Junction, KY

Average temperature in September - Porter Junction, KY
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in September
Porter Junction, KY

Average pressure in September - Porter Junction, 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
Porter Junction, KY

Average wind speed in September - Porter Junction, KY
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).

Average humidity in September
Porter Junction, KY

Average humidity in September - Porter Junction, KY
  • Average humidity in September: 76%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are August and November (74%).

Average rainfall in September
Porter Junction, KY

Average rainfall in September - Porter Junction, KY
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is February (3.66").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in September
Porter Junction, KY

Average rainfall days in September - Porter Junction, KY
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (11.4 days).

Average snowfall in September
Porter Junction, KY

Average snowfall in September - Porter Junction, KY
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Porter Junction, KY

Average snowfall days in September - Porter Junction, KY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Porter Junction, KY

Average daylight in September / Average sunshine in September - Porter Junction, 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 12min).

Average sunshine days in September
Porter Junction, KY

Average sunshine days in September - Porter Junction, KY
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is October (16.1 days).
The month with the least sunshine days is February (8.3 days).

Average UV index in September
Porter Junction, KY

Average UV index in September - Porter Junction, 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
Porter Junction, KY

Average cloud cover in September - Porter Junction, 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
Porter Junction, KY

Average visibility in September - Porter Junction, KY
  • Average visibility in September: 5mi

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

Porter Junction, Kentucky, USA

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