September weather forecast
Twin Branch, WV

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Weather in September

September, the first month of the autumn in Twin Branch, is also a moderately hot month, with an average temperature varying between 54.1°F (12.3°C) and 76.3°F (24.6°C).

Temperature

September signifies a minor drop in average high-temperature, transitioning from 82°F (27.8°C) in August to a still warm 76.3°F (24.6°C). Twin Branch undergoes a major shift from daytime highs, averaging a fresh 54.1°F (12.3°C) during the night in September.

Humidity

In Twin Branch, the average relative humidity in September is 78%.

Rainfall

September is the month with the least rainfall. Rain falls for 15.2 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

In Twin Branch, snow does not fall in June through September.

Daylight

In Twin Branch, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:57 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:10 pm EDT.

Sunshine

In September, the average sunshine is 8.4h.

UV index

The average daily maximum UV index in September in Twin Branch is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 4 during September morphs into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Twin Branch in September?

During September, Twin Branch experiences an average high-temperature of 76.3°F (24.6°C) and a low-temperature of 54.1°F (12.3°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September is 78%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 15.2 days and accumulates 1.54" (39mm) of precipitation.

How much does it rain in September?

In Twin Branch, during September, the rain falls for 15.2 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

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 6:57 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:10 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September in Twin Branch is 8.4h.

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 medium hazard to health from 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
Twin Branch, WV

Average temperature in September - Twin Branch, WV
  • Average high temperature in September: 76.3°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in September: 54.1°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in September
Twin Branch, WV

Average pressure in September - Twin Branch, WV
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in September
Twin Branch, WV

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

The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in September
Twin Branch, WV

Average humidity in September - Twin Branch, WV
  • Average humidity in September: 78%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August and November (76%).

Average rainfall in September
Twin Branch, WV

Average rainfall in September - Twin Branch, WV
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in September
Twin Branch, WV

Average rainfall days in September - Twin Branch, WV
  • Average rainfall days in September: 15.2 days

The month with the highest number of rainy days is May (19.7 days).
The months with the least rainy days are January and November (10.1 days).

Average snowfall in September
Twin Branch, WV

Average snowfall in September - Twin Branch, WV
  • Average snowfall in September: 0"

The month with the highest snowfall is December (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Twin Branch, WV

Average snowfall days in September - Twin Branch, WV
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Twin Branch, WV

Average daylight in September / Average sunshine in September - Twin Branch, WV
  • 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in September
Twin Branch, WV

Average sunshine days in September - Twin Branch, WV
  • Average sunshine days in September: 11.8 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (9.2 days).

Average UV index in September
Twin Branch, WV

Average UV index in September - Twin Branch, WV
  • Average UV index in September: 4

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

Average cloud cover in September
Twin Branch, WV

Average cloud cover in September - Twin Branch, WV
  • Average cloud cover in September: 39

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 36).

Average visibility in September
Twin Branch, WV

Average visibility in September - Twin Branch, WV
  • Average visibility in September: 5mi

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

Twin Branch, West Virginia, USA

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