September weather forecast
Rousseau, KY

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Rousseau, Kentucky, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 57.4°F (14.1°C).

Temperature

Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a warm 85.6°F (29.8°C) to a still moderately hot 79.5°F (26.4°C). A marked drop from daytime peak temperatures to an average low-temperature of 57.4°F (14.1°C) is observed during the nights in September.

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.1 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In Rousseau, snow does not fall in May through September.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 7:03 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:17 pm EDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 4 in September translates into this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The average high-temperature, in September, in Rousseau, is 79.5°F (26.4°C), while the average low-temperature is 57.4°F (14.1°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 estimated at 96.8°F (36°C).

What is the average humidity in September?

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

What is the driest month?

The month with the least rainfall is September, when the rain falls for 13.1 days and typically collects 1.93" (49mm) of precipitation.

How many days does it rain in September?

In Rousseau, in September, during 13.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow?

In Rousseau, snow does not fall in May through September.

Does it snow in September?

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

What is the average length of the day in September?

The average day length in September is 12h and 25min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:03 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:17 pm EDT.

How many hours of sunshine does Rousseau have in September?

In September, the average sunshine duration is 8.3h.

What is the UV index intensity in September?

In Rousseau, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Rousseau, KY

Average temperature in September - Rousseau, KY
  • Average high temperature in September: 79.5°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in September: 57.4°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in September
Rousseau, KY

Average pressure in September - Rousseau, 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
Rousseau, KY

Average wind speed in September - Rousseau, KY
  • Average wind speed in September: 4.5mph

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).

Average humidity in September
Rousseau, KY

Average humidity in September - Rousseau, 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
Rousseau, KY

Average rainfall in September - Rousseau, KY
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is February (3.9").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September
Rousseau, KY

Average rainfall days in September - Rousseau, KY
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (11.5 days).

Average snowfall in September
Rousseau, KY

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

The month with the highest snowfall is February (4.8").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Rousseau, KY

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

The month with the highest number of snowfall days is January (11.7 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
Rousseau, KY

Average daylight in September / Average sunshine in September - Rousseau, 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 months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in September
Rousseau, KY

Average sunshine days in September - Rousseau, KY
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is October (15.8 days).
The month with the least sunshine days is February (9 days).

Average UV index in September
Rousseau, KY

Average UV index in September - Rousseau, 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).

Average cloud cover in September
Rousseau, KY

Average cloud cover in September - Rousseau, KY
  • Average cloud cover in September: 35

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).

Average visibility in September
Rousseau, KY

Average visibility in September - Rousseau, 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).

Rousseau, Kentucky, USA

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