September weather forecast
Harpersville, AL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Harpersville, Alabama, with an average temperature ranging between min 65.1°F (18.4°C) and max 84.7°F (29.3°C).

Temperature

September's weather records an average high-temperature of a moderately hot 84.7°F (29.3°C), showing little deviation from August. In Harpersville, the nighttime temperature averages to a refreshing 65.1°F (18.4°C) during September.

Heat index

September's average heat index is estimated at a hot 93.2°F (34°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

The average relative humidity in September in Harpersville is 74%.

Rainfall

In Harpersville, in September, during 14 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, in Harpersville, Alabama, there are 177.1 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Harpersville.

Daylight

In Harpersville, Alabama, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:20 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:31 pm CDT.

Sunshine

The average sunshine in September in Harpersville is 8.7h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Make use of precautions - It is urged to ward off sun damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

How hot does it get in Harpersville in September?

An average high-temperature, in September, in Harpersville, is 84.7°F (29.3°C) and the average low-temperature is 65.1°F (18.4°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 93.2°F (34°C).

What is the average humidity in September in Harpersville?

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

How much does it rain in Harpersville in September?

In September, in Harpersville, the rain falls for 14 days. Throughout September, 2.52" (64mm) of precipitation is accumulated.

When it does not snow in Harpersville?

In Harpersville, Alabama, snow does not fall in April through October.

How many hours of daylight does Harpersville have in September?

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

When are sunrise and sunset in September in Harpersville?

On the first day of September in Harpersville, Alabama, sunrise is at 6:20 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:31 pm CDT.

How long on average sun shines in September in Harpersville?

In Harpersville, Alabama, the average sunshine duration in September is 8.7h.

What is the UV index reading in September in Harpersville?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
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
Harpersville, AL

Average temperature in September - Harpersville, AL
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.9°F).

  • Average low temperature in September: 65.1°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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Average pressure in September
Harpersville, AL

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

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

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Average wind speed in September
Harpersville, AL

Average wind speed in September - Harpersville, AL
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

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Average humidity in September
Harpersville, AL

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

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Harpersville, AL

Average rainfall in September - Harpersville, AL
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is October (2.28").

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Average rainfall days in September
Harpersville, AL

Average rainfall days in September - Harpersville, AL
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (8.4 days).

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Average snowfall in September
Harpersville, AL

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

The month with the highest snowfall is January (0.83").
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
Harpersville, AL

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

The months with the highest number of snowfall days are January and February (1.3 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
Harpersville, AL

Average daylight in September / Average sunshine in September - Harpersville, 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 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Harpersville, AL

Average sunshine days in September - Harpersville, AL
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (6.9 days).

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Average UV index in September
Harpersville, AL

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

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in September
Harpersville, AL

Average cloud cover in September - Harpersville, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, September and October (Cloud cover 31).

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Average visibility in September
Harpersville, AL

Average visibility in September - Harpersville, 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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Harpersville, Alabama, USA

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