September weather forecast
Fairlawn Heights, VA

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Weather in September

The first month of the autumn, September, is still a warm month in Fairlawn Heights, Virginia, with an average temperature fluctuating between 63.3°F (17.4°C) and 81.3°F (27.4°C).

Temperature

The onset of September results in a small decrease in the average high-temperature, moderately receding from a tropical 88°F (31.1°C) in August to a warm 81.3°F (27.4°C). Throughout September, an average low-temperature of 63.3°F (17.4°C) is expected.

Heat index

For most parts of September, the heat index is estimated at a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. 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 essentially critical for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 74%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.1" (28mm) of precipitation.

Snowfall

May through October are months without snowfall in Fairlawn Heights.

Daylight

In Fairlawn Heights, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:53 pm EDT.

Sunshine

In Fairlawn Heights, the average sunshine in September is 8.7h.

UV index

In Fairlawn Heights, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature, in September, in Fairlawn Heights, is 81.3°F (27.4°C), while the low-temperature averages to 63.3°F (17.4°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 74%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 1.1" (28mm) of precipitation.

How much does it rain in September?

In Fairlawn Heights, Virginia, in September, it is raining for 10.5 days, with typically 1.1" (28mm) of accumulated precipitation.

When it does not snow in Fairlawn Heights?

May through October are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 25min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:53 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.7h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents 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
Fairlawn Heights, VA

Average temperature in September - Fairlawn Heights, VA
  • Average high temperature in September: 81.3°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in September: 63.3°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in September
Fairlawn Heights, VA

Average pressure in September - Fairlawn Heights, VA
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Fairlawn Heights, VA

Average wind speed in September - Fairlawn Heights, VA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Fairlawn Heights, VA

Average humidity in September - Fairlawn Heights, VA
  • Average humidity in September: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).

Average rainfall in September
Fairlawn Heights, VA

Average rainfall in September - Fairlawn Heights, VA
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is September (1.1").

Average rainfall days in September
Fairlawn Heights, VA

Average rainfall days in September - Fairlawn Heights, VA
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (14.8 days).
The months with the least rainy days are October and November (8.2 days).

Average snowfall in September
Fairlawn Heights, VA

Average snowfall in September - Fairlawn Heights, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Fairlawn Heights, VA

Average snowfall days in September - Fairlawn Heights, VA
  • Average snowfall days in September: 0 days

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

Average daylight in September /
Average sunshine in September
Fairlawn Heights, VA

Average daylight in September / Average sunshine in September - Fairlawn Heights, VA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

Average sunshine days in September
Fairlawn Heights, VA

Average sunshine days in September - Fairlawn Heights, VA
  • Average sunshine days in September: 18.6 days

The months with the most sunshine days are October and December (21.4 days).
The month with the least sunshine days is May (14.4 days).

Average UV index in September
Fairlawn Heights, VA

Average UV index in September - Fairlawn Heights, VA
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Fairlawn Heights, VA

Average cloud cover in September - Fairlawn Heights, VA
  • Average cloud cover in September: 39

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in September
Fairlawn Heights, VA

Average visibility in September - Fairlawn Heights, VA
  • Average visibility in September: 6mi

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

Fairlawn Heights, Virginia, USA

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