September weather forecast
Greentown, VA

Share

Weather in September

September, the first month of the autumn in Greentown, is still a warm month, with an average temperature ranging between max 81.1°F (27.3°C) and min 62.8°F (17.1°C).

Temperature

Greentown in September undergoes a slight reduction in the average high-temperature, shifting from August's tropical 87.3°F (30.7°C) to a moderately hot 81.1°F (27.3°C). During the month of September, Greentown experiences a steady low-temperature average of 62.8°F (17.1°C).

Heat index

The heat index in September is evaluated at a hot 86°F (30°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

The average relative humidity in September is 76%.

Rainfall

In Greentown, during September, the rain falls for 11.8 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, in Greentown, there are 146.6 rainfall days, and 20.91" (531mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In Greentown, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:55 pm EDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Greentown in September?

The average high-temperature and low-temperature during September are 81.1°F (27.3°C) and 62.8°F (17.1°C) respectively. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

How many days does it rain in September?

In Greentown, in September, it is raining for 11.8 days, with typically 1.34" (34mm) of accumulated precipitation.

When it does not snow?

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

How many hours of daylight does Greentown have in September?

The average day length in September is 12h and 24min.

When is the sunrise / sunset in September in Greentown?

In September, on the first day of the month, sunrise is at 6:42 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:55 pm EDT.

How many hours of sunshine does Greentown have in September?

In September, the average sunshine duration in Greentown is 8.8h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Greentown, VA

Average temperature in September - Greentown, VA
  • Average high temperature in September: 81.1°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in September: 62.8°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 (30.6°F).

Average pressure in September
Greentown, VA

Average pressure in September - Greentown, 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 (29.96"Hg).

Average wind speed in September
Greentown, VA

Average wind speed in September - Greentown, VA
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Greentown, VA

Average humidity in September - Greentown, VA
  • Average humidity in September: 76%

The months with the highest relative humidity are May and December (78%).
The month with the lowest relative humidity is July (72%).

Average rainfall in September
Greentown, VA

Average rainfall in September - Greentown, VA
  • Average rainfall in September: 1.34"

The wettest months (with the highest rainfall) are May and August (2.05").
The driest month (with the least rainfall) is October (1.1").

Average rainfall days in September
Greentown, VA

Average rainfall days in September - Greentown, VA
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is October (8.3 days).

Average snowfall in September
Greentown, VA

Average snowfall in September - Greentown, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.18").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Greentown, VA

Average snowfall days in September - Greentown, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.7 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
Greentown, VA

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

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

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in September
Greentown, VA

Average sunshine days in September - Greentown, VA
  • Average sunshine days in September: 16 days

The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is July (11.5 days).

Average UV index in September
Greentown, VA

Average UV index in September - Greentown, VA
  • 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 and December (UV index 2).

Average cloud cover in September
Greentown, VA

Average cloud cover in September - Greentown, VA
  • Average cloud cover in September: 38

The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 31).

Average visibility in September
Greentown, VA

Average visibility in September - Greentown, VA
  • 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).

Greentown, Virginia, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location