September weather forecast
Roanoke, WV

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Weather in September

September, the first month of the autumn in Roanoke, is also a moderately hot month, with an average temperature ranging between max 76.6°F (24.8°C) and min 55.4°F (13°C).

Temperature

A subtle change in temperatures is noted as August gives way to September, with average highs reducing from 82.4°F (28°C) to a still warm 76.6°F (24.8°C). Roanoke, during the nights of September, experiences an average temperature drop to a refreshing 55.4°F (13°C).

Humidity

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

Rainfall

The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

June through September are months without snowfall in Roanoke.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:51 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:05 pm EDT.

Sunshine

In Roanoke, the average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: During September, 4 as the daily maximum UV index converts into the following advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun is at its strongest around midday, find shade and limit exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What are the temperatures in Roanoke in September?

In September, in Roanoke, the average high-temperature is 76.6°F (24.8°C), and the average low-temperature is 55.4°F (13°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 89.6°F (32°C).

What is the average humidity in September in Roanoke?

The average relative humidity in September in Roanoke, West Virginia, is 78%.

What is the driest month in Roanoke?

The month with the least rainfall in Roanoke is September, when the rain falls for 13.2 days and typically collects 1.93" (49mm) of precipitation.

How much does it rain in Roanoke in September?

In September, the rain falls for 13.2 days. Throughout September, 1.93" (49mm) of precipitation is accumulated.

When it does not snow in Roanoke?

June through September are months without snowfall.

Does it snow in Roanoke in September?

In Roanoke, West Virginia, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Roanoke?

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

When are sunrise and sunset in September in Roanoke?

On the first day of September, sunrise is at 6:51 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:05 pm EDT.

How many hours of sunshine does Roanoke have in September?

In September, the average sunshine duration in Roanoke, West Virginia, is 8.5h.

How high is the UV index in September in Roanoke?

In Roanoke, West Virginia, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Roanoke, WV

Average temperature in September - Roanoke, WV
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in September
Roanoke, WV

Average pressure in September - Roanoke, 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).

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Average wind speed in September
Roanoke, WV

Average wind speed in September - Roanoke, WV
  • Average wind speed in September: 4.3mph

The windiest months (with the highest average wind speed) are January and February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in September
Roanoke, WV

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

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is August (76%).

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Average rainfall in September
Roanoke, WV

Average rainfall in September - Roanoke, WV
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in September
Roanoke, WV

Average rainfall days in September - Roanoke, WV
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is November (11.4 days).

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Average snowfall in September
Roanoke, WV

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

The month with the highest snowfall is January (8.15").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Roanoke, WV

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

The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
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 August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

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Average sunshine days in September
Roanoke, WV

Average sunshine days in September - Roanoke, WV
  • Average sunshine days in September: 13.6 days

The month with the most sunshine days is October (14.1 days).
The months with the least sunshine days are January and February (7.6 days).

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Average UV index in September
Roanoke, WV

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

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

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Average cloud cover in September
Roanoke, WV

Average cloud cover in September - Roanoke, WV
  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in September
Roanoke, WV

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

The month with the highest visibility is November (6mi).
The months with the lowest visibility are January and February (4mi).

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Roanoke, West Virginia, USA

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