September weather forecast
Fort Thomas, KY

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Weather in September

The arrival of September signals the beginning of Autumn in Fort Thomas, with temperatures dipping to a cooler span of 58.6°F (14.8°C) to 77.9°F (25.5°C). This month maintains a high level of humidity at 74%, which can cause a feeling of dampness and stickiness. Interestingly, Fort Thomas experiences up to 12.4 hours of daylight per day in September, despite the onset of autumn. This relatively sunny and moderate month serves as the perfect transitional gateway from the steamy summer to the mellow autumn. As the autumn leaves begin to fall, the wind speed picks up to 5.7mph (9.2km/h), creating an enchantingly serene atmosphere.

Temperature

The onset of September brings a small shift in high-temperatures, falling from 83.8°F (28.8°C) in August to a still warm 77.9°F (25.5°C). Fort Thomas observes an average nighttime low-temperature of 58.6°F (14.8°C) during the month of September.

Humidity

August through October, with an average relative humidity of 74%, are the least humid months.

Rainfall

September is the month with the least rainfall in Fort Thomas. Rain falls for 12.1 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

In Fort Thomas, snow does not fall in May through October.

Daylight

In September, the average length of the day in Fort Thomas is 12h and 26min.
On the first day of the month, sunrise is at 7:07 am and sunset at 8:07 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:21 pm EDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: During September, 4 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To avoid the Sun's strongest rays, limit exposure around the mid-day period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

September temperatures in Fort Thomas vary between a high-temperature of 77.9°F (25.5°C) and a low-temperature of 58.6°F (14.8°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is estimated at 91.4°F (33°C).

What are the least humid months?

The months with the lowest humidity are August through October, with an average relative humidity of 74%.

What is the average humidity in September?

In Fort Thomas, the average relative humidity in September is 74%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.54" (39mm) of precipitation.

How many days does it rain in September?

In Fort Thomas, in September, it is raining for 12.1 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Fort Thomas have in September?

In Fort Thomas, the average day length in September is 12h and 26min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:07 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:21 pm EDT.

How many hours of sunshine does Fort Thomas have in September?

The average sunshine duration in September is 8.3h.

What is the UV index reading in September?

In Fort Thomas, the average daily maximum UV index in September is 4. A UV Index 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
Fort Thomas, KY

Average temperature in September - Fort Thomas, KY
  • Average high temperature in September: 77.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in September: 58.6°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average pressure in September
Fort Thomas, KY

Average pressure in September - Fort Thomas, KY
  • Average pressure in September: 30.03"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Fort Thomas, KY

Average wind speed in September - Fort Thomas, KY
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Fort Thomas, KY

Average humidity in September - Fort Thomas, KY
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September and October (74%).

Average rainfall in September
Fort Thomas, KY

Average rainfall in September - Fort Thomas, KY
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in September
Fort Thomas, KY

Average rainfall days in September - Fort Thomas, KY
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (8.2 days).

Average snowfall in September
Fort Thomas, KY

Average snowfall in September - Fort Thomas, KY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Fort Thomas, KY

Average snowfall days in September - Fort Thomas, KY
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (5.5 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
Fort Thomas, KY

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in September
Fort Thomas, KY

Average sunshine days in September - Fort Thomas, KY
  • Average sunshine days in September: 16.2 days

The months with the most sunshine days are October and November (19.2 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in September
Fort Thomas, KY

Average UV index in September - Fort Thomas, KY
  • Average UV index in September: 4

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
Fort Thomas, KY

Average cloud cover in September - Fort Thomas, KY
  • Average cloud cover in September: 33

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
Fort Thomas, KY

Average visibility in September - Fort Thomas, 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).

Fort Thomas, Kentucky, USA

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