September weather forecast
Brandywine, WV

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Brandywine, West Virginia, with an average temperature ranging between max 75.4°F (24.1°C) and min 54.5°F (12.5°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from a warm 82°F (27.8°C) in August to a still moderately hot 75.4°F (24.1°C). Throughout September, Brandywine encounters an average temperature drop to a cool 54.5°F (12.5°C).

Humidity

May, September and October, with an average relative humidity of 78%, are the most humid months.

Rainfall

In September, the rain falls for 14.5 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. In Brandywine, during the entire year, the rain falls for 167.3 days and collects up to 30.35" (771mm) of precipitation.

Snowfall

In Brandywine, snow does not fall in June through September.

Daylight

The average length of the day in September in Brandywine is 12h and 26min.
On the first day of September, sunrise is at 6:46 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:00 pm EDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

In Brandywine, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

An average high-temperature, in September, in Brandywine, is 75.4°F (24.1°C) and the average low-temperature is 54.5°F (12.5°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 87.8°F (31°C).

What is the most humid month?

The months with the highest humidity are May, September and October, with an average relative humidity of 78%.

What is the average humidity in September?

The average relative humidity in September is 78%.

How many days does it rain in September?

In September, the rain falls for 14.5 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow?

In Brandywine, snow does not fall in June through September.

Does it snow in Brandywine in September?

In Brandywine, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Brandywine have in September?

In Brandywine, West Virginia, the average day length in September is 12h and 26min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:46 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:00 pm EDT.

How many hours of sunshine does Brandywine have in September?

The average sunshine duration in September is 8.5h.

How high is the UV index in September?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Brandywine, WV

Average temperature in September - Brandywine, WV
  • Average high temperature in September: 75.4°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in September
Brandywine, WV

Average pressure in September - Brandywine, WV
  • Average pressure in September: 30.06"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
Brandywine, WV

Average wind speed in September - Brandywine, WV
  • Average wind speed in September: 4.5mph

The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in September
Brandywine, WV

Average humidity in September - Brandywine, WV
  • Average humidity in September: 78%

The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January and July (74%).

Average rainfall in September
Brandywine, WV

Average rainfall in September - Brandywine, WV
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in September
Brandywine, WV

Average rainfall days in September - Brandywine, WV
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).

Average snowfall in September
Brandywine, WV

Average snowfall in September - Brandywine, WV
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Brandywine, WV

Average snowfall days in September - Brandywine, WV
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Brandywine, WV

Average daylight in September / Average sunshine in September - Brandywine, WV
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in September
Brandywine, WV

Average sunshine days in September - Brandywine, WV
  • Average sunshine days in September: 12.3 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in September
Brandywine, WV

Average UV index in September - Brandywine, WV
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Brandywine, WV

Average cloud cover in September - Brandywine, WV
  • Average cloud cover in September: 39

The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 32).

Average visibility in September
Brandywine, WV

Average visibility in September - Brandywine, WV
  • Average visibility in September: 5mi

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

Brandywine, West Virginia, USA

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