September weather forecast
Lexington, KY

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A sunset view of the ancient buildings in Lexington, Kentucky
A sunset view of the ancient buildings in Lexington, Kentucky

Weather in September

September in Lexington heralds the arrival of the fall season, with the cityscapes starting to show the first hints of autumn colors. The dramatic change in weather brings a sense of calmness to the otherwise hot summer days. In this month, temperature dips to 59°F at night, offering respite from the persistent heat. Transitioning toward October, Lexington experiences cooler nights, decreased humidity, and the gradual color change in foliage. September paves the way for a scenic October, flawlessly marking the transition from warm summer months to the vibrant fall season.

Temperature

September in Lexington is characterized by a mild reduction in the average high-temperature, from 84°F in August to a still warm 78.1°F. An average minimum temperature of 59°F marks the month of September in Lexington.

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.7 days and typically collects 2.32" of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 7:07 am and sunset at 8:08 pm. On the last day of September, in Lexington, sunrise is at 7:32 am and sunset at 7:23 pm EDT.

Sunshine

In September, the average sunshine is 8.1h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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FAQ

What is the average September temperature in Lexington?

During September, Lexington experiences an average high-temperature of 78.1°F and a low-temperature of 59°F. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 91.4°F.

What is the average humidity in September in Lexington?

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

What is the driest month in Lexington?

The month with the least rainfall in Lexington, Kentucky, is September, when the rain falls for 13.7 days and typically collects 2.32" of precipitation.

How many days does it rain in September in Lexington?

In Lexington, during September, the rain falls for 13.7 days and regularly aggregates up to 2.32" of precipitation.

When it does not snow in Lexington?

May through September are months without snowfall in Lexington.

Does it snow in Lexington in September?

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

How many hours of daylight does Lexington have in September?

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

What time are sunrise and sunset in September in Lexington?

On the first day of September, sunrise is at 7:07 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:23 pm EDT.

How long on average sun shines in September in Lexington?

In September, the average sunshine duration is 8.1h.

How high is the UV index in September in Lexington?

In Lexington, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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
Lexington, KY

Average temperature in September - Lexington, KY
  • Average high temperature in September: 78.1°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 (39°F).

  • Average low temperature in September: 59°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure in September
Lexington, KY

Average pressure in September - Lexington, KY
  • Average pressure in September: 30.03"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).

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Average wind speed in September
Lexington, KY

Average wind speed in September - Lexington, KY
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Lexington, KY

Average humidity in September - Lexington, 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%).

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Average rainfall in September
Lexington, KY

Average rainfall in September - Lexington, KY
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is September (2.32").

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Average rainfall days in September
Lexington, KY

Average rainfall days in September - Lexington, KY
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (10.3 days).

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Average snowfall in September
Lexington, KY

Average snowfall in September - Lexington, 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").

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Average snowfall days in September
Lexington, KY

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

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Lexington, KY

Average daylight in September / Average sunshine in September - Lexington, 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 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in September
Lexington, KY

Average sunshine days in September - Lexington, KY
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is February (9.8 days).

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Average UV index in September
Lexington, KY

Average UV index in September - Lexington, KY
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Lexington, KY

Average cloud cover in September - Lexington, 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 30).

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Average visibility in September
Lexington, KY

Average visibility in September - Lexington, KY
  • Average visibility in September: 6mi

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

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Lexington, Kentucky, USA

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