September weather forecast
Royalton, KY

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Weather in September

September, the first month of the autumn in Royalton, is still a warm month, with an average temperature fluctuating between 57.7°F (14.3°C) and 79.5°F (26.4°C).

Temperature

The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from 85.6°F (29.8°C) in August to a still warm 79.5°F (26.4°C). In September, the nighttime temperature in Royalton plummets remarkably from the daily apex to a steady average of 57.7°F (14.3°C).

Humidity

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

Rainfall

The month with the least rainfall in Royalton is September, when the rain falls for 13.4 days and typically collects 2.01" (51mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day in Royalton is 12h and 25min.
On the first day of the month, sunrise is at 7:02 am and sunset at 8:00 pm. On the last day of September, in Royalton, Kentucky, sunrise is at 7:27 am and sunset at 7:16 pm EDT.

Sunshine

The average sunshine in September in Royalton is 8.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 during September leads to these advisories:
Prioritize safety - Recommendations to avert sunburn are shared. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the average September temperature in Royalton?

Royalton in September has an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 57.7°F (14.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is computed to be 96.8°F (36°C).

What is the average humidity in September in Royalton?

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

What is the driest month in Royalton?

September is the month with the least rainfall in Royalton, Kentucky. Rain falls for 13.4 days and accumulates 2.01" (51mm) of precipitation.

How many days does it rain in September in Royalton?

In Royalton, Kentucky, in September, it is raining for 13.4 days, with typically 2.01" (51mm) of accumulated precipitation.

When it does not snow in Royalton?

May through September are months without snowfall in Royalton, Kentucky.

Does it snow in Royalton in September?

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

How many hours of daylight does Royalton have in September?

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

When is the sunrise / sunset in September in Royalton?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:16 pm EDT.

How many hours of sunshine does Royalton have in September?

In September, the average sunshine duration is 8.3h.

What is the UV index intensity in September in Royalton?

In September, the average daily maximum UV index in Royalton, Kentucky, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
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
Royalton, KY

Average temperature in September - Royalton, KY
  • Average high temperature in September: 79.5°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 (40.1°F).

  • Average low temperature in September: 57.7°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in September
Royalton, KY

Average pressure in September - Royalton, 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).

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Average wind speed in September
Royalton, KY

Average wind speed in September - Royalton, KY
  • Average wind speed in September: 4.6mph

The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in September
Royalton, KY

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

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

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Average rainfall in September
Royalton, KY

Average rainfall in September - Royalton, KY
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is February (3.7").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in September
Royalton, KY

Average rainfall days in September - Royalton, KY
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (11.6 days).

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Average snowfall in September
Royalton, KY

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

The month with the highest snowfall is February (4.25").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Royalton, KY

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

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Royalton, 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in September
Royalton, KY

Average sunshine days in September - Royalton, KY
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is February (9.3 days).

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Average UV index in September
Royalton, KY

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

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Average cloud cover in September
Royalton, KY

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

The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in September
Royalton, KY

Average visibility in September - Royalton, 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).

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Royalton, Kentucky, USA

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