September weather forecast and climate
Alfalfa, AL

September, the first month of the autumn, in Alfalfa, is also a hot month, with average temperature ranging between min 67.1°F (19.5°C) and max 87.6°F (30.9°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 87.6°F (30.9°C). The average low-temperature, in Alfalfa, is 67.1°F (19.5°C).

Heat index

The average heat index in September is appraised at a sweltering 99.7°F (37.6°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', 'real feel', 'apparent temperature', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, differences in body mass, height, and shape, and clothing affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Alfalfa, Alabama, the average relative humidity in September is 71%.

Rainfall

The month with the least rainfall in Alfalfa is September when the rain falls for 11 days and typically collects 1.65" (42mm) of precipitation.

Snowfall

In Alfalfa snow does not fall in March through October.

Daylight

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

Sunshine

The average sunshine is 9.1h.

UV index

In September, the average daily maximum UV index in Alfalfa, Alabama, is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 Alfalfa?

In September, the average high-temperature is 87.6°F (30.9°C), and the average low-temperature is 67.1°F (19.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines relative humidity and air temperature, in September is evaluated at 99.7°F (37.6°C).

What is the average humidity in September in Alfalfa?

In September, the average relative humidity is 71%.

How much does it rain in Alfalfa in September?

In Alfalfa, in September, during 11 rainfall days, 1.65" (42mm) of precipitation is typically accumulated.

What is the driest month in Alfalfa?

September is the month with the least rainfall. Rain falls for 11 days and accumulates 1.65" (42mm) of precipitation.

When it does not snow in Alfalfa?

In Alfalfa, Alabama, snow does not fall in March through October.

How many hours of daylight does Alfalfa have in September?

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

How long on average sun shines in September in Alfalfa?

In Alfalfa, the average sunshine in September is 9.1h.

What is the UV index intensity in September in Alfalfa?

The average daily maximum UV index in September in Alfalfa, Alabama, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Alfalfa, AL
  • Average high temperature in September: 87.6°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (54.1°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).

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

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are June and August (29.97").

Average wind speed in September - Alfalfa, AL
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September - Alfalfa, AL
  • Average humidity in September: 71%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September - Alfalfa, AL
  • Average rainfall in September: 1.65"

The wettest months (with the highest rainfall) are April and December (3.74").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in September - Alfalfa, AL
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is October (8.3 days).

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

The month with the highest snowfall is January (0.43").
Months with the least snowfall are March, April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is January (0.9 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Alfalfa, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.1h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

Average sunshine days in September - Alfalfa, AL
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is October (22.4 days).
The month with the least sunshine days is July (10.4 days).

Average UV index in September - Alfalfa, AL
  • Average UV index in September: 6

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 - Alfalfa, AL
  • Average cloud cover in September: 30

Months with the most cloud cover are February and December (Cloud cover 48).
Months with the least cloud cover are September and October (Cloud cover 30).

Average visibility in September - Alfalfa, AL
  • Average visibility in September: 6mi

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