September weather forecast and climate
Richmond Hills, AL

Weather in September

The first month of the autumn, September, is still a warm month in Richmond Hills, Alabama, with average temperature fluctuating between 82.8°F (28.2°C) and 63.5°F (17.5°C).

Temperature

In Richmond Hills, Alabama, the average high-temperature is almost the same as in August - a moderately hot 82.8°F (28.2°C). In Richmond Hills, the average low-temperature is 63.5°F (17.5°C).

Heat index

In September, the average heat index is appraised at a tropical 88.9°F (31.6°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, differences in body mass, height, and shape, wind), and activity. 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.

Humidity

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

Rainfall

In Richmond Hills, during September, the rain falls for 14.2 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 178.6 rainfall days, and 41.26" (1048mm) of precipitation is accumulated.

Snowfall

In Richmond Hills snow does not fall in April through October.

Daylight

The average length of the day is 12.4h.

Sunshine

In September, the average sunshine is 8.9h.

UV index

The average daily maximum UV index in Richmond Hills, Alabama, is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the temperature in September in Richmond Hills?

The average high-temperature, in September, in Richmond Hills, is 82.8°F (28.2°C), while the average low-temperature is 63.5°F (17.5°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines both air temperature and relative humidity, is appraised at 88.9°F (31.6°C).

What is the average humidity in September in Richmond Hills?

The average relative humidity in September in Richmond Hills is 74%.

How much does it rain in Richmond Hills in September?

In September, the rain falls for 14.2 days. Throughout September, 2.68" (68mm) of precipitation is accumulated.

When it does not snow in Richmond Hills?

April through October are months without snowfall in Richmond Hills.

How many hours of daylight does Richmond Hills have in September?

The average length of the day in September in Richmond Hills, Alabama, is 12.4h.

How long on average sun shines in September in Richmond Hills?

In Richmond Hills, the average sunshine in September is 8.9h.

How high is the UV index in September in Richmond Hills?

The average daily maximum UV index in September in Richmond Hills, Alabama, 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
Richmond Hills, AL

Average temperature in September - Richmond Hills, AL
  • Average high temperature in September: 82.8°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (47.7°F).

  • Average low temperature in September: 63.5°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

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Average pressure in September
Richmond Hills, AL

Average pressure in September - Richmond Hills, AL
  • Average pressure in September: 30.02"

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

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Average wind speed in September
Richmond Hills, AL

Average wind speed in September - Richmond Hills, AL
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

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Average humidity in September
Richmond Hills, AL

Average humidity in September - Richmond Hills, AL
  • Average humidity in September: 74%

Months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Richmond Hills, AL

Average rainfall in September - Richmond Hills, AL
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is February (4.53").
The driest month (with the least rainfall) is November (2.56").

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Average rainfall days in September
Richmond Hills, AL

Average rainfall days in September - Richmond Hills, AL
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (10.5 days).

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Average snowfall in September
Richmond Hills, AL

Average snowfall in September - Richmond Hills, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.71").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Richmond Hills, AL

Average snowfall days in September - Richmond Hills, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Richmond Hills, AL

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

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 8.9h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
Months with the least sunshine are February and December (Average sunshine: 4.7).

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Average sunshine days in September
Richmond Hills, AL

Average sunshine days in September - Richmond Hills, AL
  • Average sunshine days in September: 14.2 days

Months with the most sunshine days are October and November (17.6 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index in September
Richmond Hills, AL

Average UV index in September - Richmond Hills, AL
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Richmond Hills, AL

Average cloud cover in September - Richmond Hills, AL
  • Average cloud cover in September: 30

Months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in September
Richmond Hills, AL

Average visibility in September - Richmond Hills, 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).

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