September weather forecast and climate
Butler, AL

September, the first month of the autumn, in Butler, is still a hot month, with temperature in the range of an average low of 67.1°F (19.5°C) and an average high of 87.8°F (31°C).

Temperature

In Butler, the average high-temperature in September is practically the same as in August - a still hot 87.8°F (31°C). In Butler, the average low-temperature is 67.1°F (19.5°C).

Heat index

The average heat index in September is calculated to a very hot 101.8°F (38.8°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, metabolic differences, pregnancy). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Butler, the average relative humidity is 74%.

Rainfall

In September, in Butler, the rain falls for 12.8 days. Throughout September, 1.42" (36mm) of precipitation is accumulated. Throughout the year, there are 138.6 rainfall days, and 19.33" (491mm) of precipitation is accumulated.

Snowfall

In Butler snow does not fall in April through November.

Daylight

In September, the average length of the day in Butler, Alabama, is 12.3h.

Sunshine

The average sunshine in Butler is 9.1h.

UV index

In September, the average daily maximum UV index in Butler, Alabama, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Butler?

In Butler, in September, the average high-temperature is 87.8°F (31°C), and the average low-temperature is 67.1°F (19.5°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is calculated to 101.8°F (38.8°C).

What is the average humidity in September in Butler?

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

How much does it rain in Butler in September?

In Butler, in September, it is raining for 12.8 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow in Butler?

In Butler, Alabama, snow does not fall in April through November.

How many hours of daylight does Butler have in September?

In Butler, the average length of the day in September is 12.3h.

How many hours of sunshine does Butler have in September?

In Butler, Alabama, the average sunshine in September is 9.1h.

What is the UV index intensity in September in Butler?

The average daily maximum UV index in September in Butler is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.
Average temperature in September - Butler, AL
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (55.2°F).

  • Average low temperature in September: 67.1°F

Months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).

Average pressure in September - Butler, AL
  • Average pressure in September: 29.99"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.96").

Average wind speed in September - Butler, AL
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September - Butler, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September - Butler, AL
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is November (0.94").

Average rainfall days in September - Butler, AL
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (6.4 days).

Average snowfall in September - Butler, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.16").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September - Butler, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.5 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Butler, AL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 9.1h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 4.9h).

Average sunshine days in September - Butler, AL
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is October (22.5 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in September - Butler, AL
  • Average UV index in September: 5

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September - Butler, AL
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 31).

Average visibility in September - Butler, AL
  • Average visibility in September: 5mi

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