September weather forecast and climate
Altro, KY

September, the first month of the autumn, in Altro, is also a moderately hot month, with average temperature varying between 56.3°F (13.5°C) and 78.3°F (25.7°C).

Temperature

In September, the average high-temperature slightly decreases, from 84.2°F (29°C) in August, to a still warm 78.3°F (25.7°C). In Altro, the average low-temperature is 56.3°F (13.5°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 1.46" (37mm) of precipitation.

Snowfall

In Altro snow does not fall in May through September.

Daylight

The average length of the day in September is 12.4h.

Sunshine

The average sunshine is 8.3h.

UV index

In Altro, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Altro?

In Altro, Kentucky, in September, the average high-temperature is 78.3°F (25.7°C), and the average low-temperature is 56.3°F (13.5°C).

What is the average humidity in September in Altro?

The average relative humidity in September is 77%.

How much does it rain in Altro in September?

In Altro, in September, it is raining for 13.4 days, with typically 1.46" (37mm) of accumulated precipitation.

What is the driest month in Altro?

September is the month with the least rainfall in Altro. Rain falls for 13.4 days and accumulates 1.46" (37mm) of precipitation.

Does it snow in Altro in September?

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

When it does not snow in Altro?

In Altro snow does not fall in May through September.

What is the average length of the day in September in Altro?

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

How long on average sun shines in September in Altro?

In September, the average sunshine in Altro is 8.3h.

What is the UV index intensity in September in Altro?

The average daily maximum UV index in September in Altro, Kentucky, is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Altro, KY
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in September - Altro, KY
  • Average pressure in September: 30.05"

Months with the highest atmospheric pressure are January and November (30.16").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in September - Altro, KY
  • Average wind speed in September: 4.2mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (4mph).

Average humidity in September - Altro, KY
  • Average humidity in September: 77%

Months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is November (75%).

Average rainfall in September - Altro, KY
  • Average rainfall in September: 1.46"

The wettest month (with the highest rainfall) is February (2.76").
The driest month (with the least rainfall) is September (1.46").

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

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (10.5 days).

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

The month with the highest snowfall is February (3.15").
Months with the least snowfall are May, June, July, August and September (0").

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

The month with the highest number of snowfall days is January (10.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Altro, 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: 8.3h

Months with the most sunshine are June, July and August (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 4.3h).

Average sunshine days in September - Altro, KY
  • Average sunshine days in September: 14 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is May (9.7 days).

Average UV index in September - Altro, KY
  • Average UV index in September: 4

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

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

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September - Altro, KY
  • Average visibility in September: 5mi

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