September weather forecast
Invermay, VA

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Weather in September

The first month of the autumn, September, is still a warm month in Invermay, Virginia, with an average temperature ranging between max 81.5°F (27.5°C) and min 62.6°F (17°C).

Temperature

The start of September involves a subtle temperature drop, shifting from a tropical 87.4°F (30.8°C) in August to a warm 81.5°F (27.5°C). Throughout September, the average low-temperature records at a refreshing 62.6°F (17°C).

Heat index

September's mean heat index is estimated at a hot 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.3" (33mm) of precipitation.

Snowfall

In Invermay, snow does not fall in April through November.

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of September, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm EDT.

Sunshine

In Invermay, the average sunshine in September is 8.8h.

UV index

In Invermay, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

The average high-temperature and low-temperature during September are 81.5°F (27.5°C) and 62.6°F (17°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in September is estimated at 86°F (30°C).

What is the average humidity in September?

In Invermay, the average relative humidity in September is 76%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.3" (33mm) of precipitation.

How much does it rain in September?

In Invermay, in September, it is raining for 12 days, with typically 1.3" (33mm) of accumulated precipitation.

When it does not snow in Invermay?

April through November are months without snowfall.

How many hours of daylight does Invermay have in September?

In Invermay, the average day length in September is 12h and 24min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm EDT.

How many hours of sunshine does Invermay have in September?

The average sunshine duration in September is 8.8h.

What is the UV index intensity in September?

The average daily maximum UV index in September in Invermay is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Invermay, VA

Average temperature in September - Invermay, VA
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in September: 62.6°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in September
Invermay, VA

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

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in September
Invermay, VA

Average wind speed in September - Invermay, VA
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Invermay, VA

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

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).

Average rainfall in September
Invermay, VA

Average rainfall in September - Invermay, VA
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in September
Invermay, VA

Average rainfall days in September - Invermay, VA
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (8.3 days).

Average snowfall in September
Invermay, VA

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

The month with the highest snowfall is January (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Invermay, VA

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

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Invermay, VA

Average daylight in September / Average sunshine in September - Invermay, 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 months with the least sunshine are January and December (Average sunshine: 5h and 30min).

Average sunshine days in September
Invermay, VA

Average sunshine days in September - Invermay, VA
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is July (12 days).

Average UV index in September
Invermay, VA

Average UV index in September - Invermay, 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
Invermay, VA

Average cloud cover in September - Invermay, VA
  • Average cloud cover in September: 39

The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Invermay, VA

Average visibility in September - Invermay, VA
  • Average visibility in September: 5mi

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

Invermay, Virginia, USA

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