September weather forecast
Spring Grove, VA

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Weather in September

September, the first month of the autumn in Spring Grove, is also a moderately hot month, with an average temperature fluctuating between 81.1°F (27.3°C) and 63.1°F (17.3°C).

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from a tropical 86.9°F (30.5°C) in August to a moderately hot 81.1°F (27.3°C). Spring Grove, during September, witnesses an average low-temperature of 63.1°F (17.3°C).

Heat index

The heat index value during September is calculated to be a tropical 86°F (30°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Spring Grove, during September, the rain falls for 10.9 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Spring Grove, during the entire year, the rain falls for 132.9 days and collects up to 15.59" (396mm) of precipitation.

Snowfall

April through October are months without snowfall in Spring Grove, Virginia.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:52 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index in Spring Grove is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 5 during September leads to these advisories:
Take precautions - Protection against skin and eye damage is obliged. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Spring Grove in September?

September temperatures vary between a high-temperature of 81.1°F (27.3°C) and a low-temperature of 63.1°F (17.3°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 78%.

How much does it rain in September?

In Spring Grove, in September, during 10.9 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow?

In Spring Grove, snow does not fall in April through October.

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 6:39 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:52 pm EDT.

How many hours of sunshine does Spring Grove have in September?

In September, the average sunshine duration is 8.6h.

What is the UV index reading in September?

In September, the average daily maximum UV index in Spring Grove is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe 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
Spring Grove, VA

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

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in September: 63.1°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 (30.9°F).

Average pressure in September
Spring Grove, VA

Average pressure in September - Spring Grove, 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
Spring Grove, VA

Average wind speed in September - Spring Grove, VA
  • Average wind speed in September: 6.1mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Spring Grove, VA

Average humidity in September - Spring Grove, VA
  • Average humidity in September: 78%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in September
Spring Grove, VA

Average rainfall in September - Spring Grove, VA
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is January (0.98").

Average rainfall days in September
Spring Grove, VA

Average rainfall days in September - Spring Grove, VA
  • Average rainfall days in September: 10.9 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September
Spring Grove, VA

Average snowfall in September - Spring Grove, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Spring Grove, VA

Average snowfall days in September - Spring Grove, 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
Spring Grove, VA

Average daylight in September / Average sunshine in September - Spring Grove, 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 42min).

  • Average sunshine in September: 8h and 4min

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

Average sunshine days in September
Spring Grove, VA

Average sunshine days in September - Spring Grove, VA
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is May (13.3 days).

Average UV index in September
Spring Grove, VA

Average UV index in September - Spring Grove, 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
Spring Grove, VA

Average cloud cover in September - Spring Grove, VA
  • Average cloud cover in September: 41

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in September
Spring Grove, VA

Average visibility in September - Spring Grove, VA
  • Average visibility in September: 5mi

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

Spring Grove, Virginia, USA

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