September weather forecast
Graysville, AL

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Weather in September

September, the first month of the autumn in Graysville, is also a moderately hot month, with an average temperature fluctuating between 85.1°F (29.5°C) and 65.8°F (18.8°C).

Temperature

Upon the beginning of September, Graysville's high-temperatures register at a moderately hot 85.1°F (29.5°C), closely mirroring the preceding month. An average minimum temperature of 65.8°F (18.8°C) is recorded during the month of September.

Heat index

The average heat index in September is estimated at a hot 93.2°F (34°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

The months with the lowest humidity in Graysville, Alabama, are September and October, with an average relative humidity of 71%.

Rainfall

In Graysville, during September, the rain falls for 14.5 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Graysville, during the entire year, the rain falls for 173.7 days and collects up to 40" (1016mm) of precipitation.

Snowfall

In Graysville, snow does not fall in April through October.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of September, in Graysville, sunrise is at 6:42 am and sunset at 6:33 pm CDT.

Sunshine

In September, the average sunshine in Graysville, Alabama, is 8.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during September leads to these advisories:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

How hot is it in Graysville in September?

In September, the average high-temperature and low-temperature in Graysville, Alabama, are 85.1°F (29.5°C) and 65.8°F (18.8°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in September is estimated at 93.2°F (34°C).

What are the least humid months in Graysville?

The months with the lowest humidity are September and October, with an average relative humidity of 71%.

What is the average humidity in September in Graysville?

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

How much does it rain in Graysville in September?

In September, the rain falls for 14.5 days. Throughout September, 2.48" (63mm) of precipitation is accumulated.

When it does not snow in Graysville?

April through October are months without snowfall in Graysville, Alabama.

How many hours of daylight does Graysville have in September?

In Graysville, Alabama, the average day length in September is 12h and 22min.

What time are sunrise and sunset in September in Graysville?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of the month, in Graysville, Alabama, sunrise is at 6:42 am and sunset at 6:33 pm CDT.

How many hours of sunshine does Graysville have in September?

In Graysville, the average sunshine duration in September is 8.9h.

What is the UV index intensity in September in Graysville?

In September, the average daily maximum UV index in Graysville is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
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
Graysville, AL

Average temperature in September - Graysville, AL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.9°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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Average pressure in September
Graysville, AL

Average pressure in September - Graysville, AL
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in September
Graysville, AL

Average wind speed in September - Graysville, AL
  • Average wind speed in September: 4.9mph

The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Graysville, AL

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

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are September and October (71%).

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Average rainfall in September
Graysville, AL

Average rainfall in September - Graysville, AL
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is October (2.24").

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Average rainfall days in September
Graysville, AL

Average rainfall days in September - Graysville, AL
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (9.6 days).

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Average snowfall in September
Graysville, AL

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

The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Graysville, AL

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

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Graysville, AL

Average daylight in September / Average sunshine in September - Graysville, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in September
Graysville, AL

Average sunshine days in September - Graysville, AL
  • Average sunshine days in September: 13 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is July (7.5 days).

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Average UV index in September
Graysville, AL

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

The month with the highest UV index is August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Graysville, AL

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

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 30).

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Average visibility in September
Graysville, AL

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

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

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Graysville, Alabama, USA

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