September weather forecast
Windy Run, VA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Windy Run, Virginia, with an average temperature varying between 62.6°F (17°C) and 81.3°F (27.4°C).

Temperature

With the commencement of September, Windy Run records a moderate temperature decline, with the average high easing from August's tropical 88.3°F (31.3°C) to a warm 81.3°F (27.4°C). During September, the nighttime temperature averages of 62.6°F (17°C).

Heat index

In September, the average heat index is calculated to be a hot 86°F (30°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In Windy Run, the average relative humidity in September is 73%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.65" (42mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:55 pm EDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 5 in September translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

What is the average September temperature?

In September, in Windy Run, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 62.6°F (17°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is calculated to be 86°F (30°C).

What is the average humidity in September?

In Windy Run, the average relative humidity in September is 73%.

What is the driest month?

The month with the least rainfall in Windy Run is September, when the rain falls for 12.5 days and typically collects 1.65" (42mm) of precipitation.

How many days does it rain in September?

In Windy Run, in September, it is raining for 12.5 days, with typically 1.65" (42mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall in Windy Run.

What is the average length of the day in September?

In September, the average day length is 12h and 25min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:55 pm EDT.

How long on average sun shines in September in Windy Run?

In September, the average sunshine duration is 8.7h.

What is the UV index reading in September?

In Windy Run, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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
Windy Run, VA

Average temperature in September - Windy Run, VA
  • Average high temperature in September: 81.3°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in September: 62.6°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

Average pressure in September
Windy Run, VA

Average pressure in September - Windy Run, 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
Windy Run, VA

Average wind speed in September - Windy Run, VA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Windy Run, VA

Average humidity in September - Windy Run, VA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).

Average rainfall in September
Windy Run, VA

Average rainfall in September - Windy Run, VA
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in September
Windy Run, VA

Average rainfall days in September - Windy Run, VA
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in September
Windy Run, VA

Average snowfall in September - Windy Run, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Windy Run, VA

Average snowfall days in September - Windy Run, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.5 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
Windy Run, VA

Average daylight in September / Average sunshine in September - Windy Run, 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 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in September
Windy Run, VA

Average sunshine days in September - Windy Run, VA
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).

Average UV index in September
Windy Run, VA

Average UV index in September - Windy Run, VA
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September
Windy Run, VA

Average cloud cover in September - Windy Run, VA
  • Average cloud cover in September: 39

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Windy Run, VA

Average visibility in September - Windy Run, 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).

Windy Run, Virginia, USA

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