September weather forecast and climate
Big Clifty, KY

The first month of the autumn, September, is still a warm month in Big Clifty, Kentucky, with average temperature varying between 60.3°F (15.7°C) and 79.7°F (26.5°C).

Temperature

In Big Clifty, the average high-temperature slightly decreases, from 85.5°F (29.7°C) in August, to a still warm 79.7°F (26.5°C). In Big Clifty, the average low-temperature is 60.3°F (15.7°C).

Humidity

In September, the average relative humidity in Big Clifty is 75%.

Rainfall

September is the month with the least rainfall in Big Clifty, Kentucky. Rain falls for 12.5 days and accumulates 1.69" (43mm) of precipitation.

Snowfall

In Big Clifty snow does not fall in May through October.

Daylight

In September, the average length of the day in Big Clifty is 12.4h.

Sunshine

In September, the average sunshine is 8.5h.

UV index

In Big Clifty, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.

What is the temperature in September in Big Clifty?

The average high-temperature, in September, in Big Clifty, Kentucky, is 79.7°F (26.5°C), while the average low-temperature is 60.3°F (15.7°C).

What is the average humidity in September in Big Clifty?

In Big Clifty, Kentucky, the average relative humidity in September is 75%.

How much does it rain in Big Clifty in September?

In Big Clifty, Kentucky, in September, during 12.5 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

What is the driest month in Big Clifty?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.69" (43mm) of precipitation.

When it does not snow in Big Clifty?

May through October are months without snowfall in Big Clifty.

How many hours of daylight does Big Clifty have in September?

The average length of the day in September in Big Clifty, Kentucky, is 12.4h.

How many hours of sunshine does Big Clifty have in September?

In Big Clifty, Kentucky, the average sunshine in September is 8.5h.

How high is the UV index in September in Big Clifty?

In Big Clifty, Kentucky, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Big Clifty, KY
  • Average high temperature in September: 79.7°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 (40.6°F).

  • Average low temperature in September: 60.3°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in September - Big Clifty, KY
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.96").

Average wind speed in September - Big Clifty, KY
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).

Average humidity in September - Big Clifty, KY
  • Average humidity in September: 75%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September - Big Clifty, KY
  • Average rainfall in September: 1.69"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in September - Big Clifty, KY
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in September - Big Clifty, KY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.97").
Months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September - Big Clifty, KY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.6 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Big Clifty, KY
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 8.5h

Months with the most sunshine are June and August (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 4.1h).

Average sunshine days in September - Big Clifty, KY
  • Average sunshine days in September: 15.2 days

Months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in September - Big Clifty, KY
  • Average UV index in September: 5

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

Average cloud cover in September - Big Clifty, KY
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September - Big Clifty, KY
  • Average visibility in September: 6mi

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