September weather forecast
Mammoth, West VA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Mammoth, West Virginia, with an average temperature ranging between max 76.6°F (24.8°C) and min 55°F (12.8°C).

Temperature

In September, the average high-temperature marginally drops from a warm 82.8°F (28.2°C) in August to a still moderately hot 76.6°F (24.8°C). In Mammoth, in September, the average low-temperature is 55°F (12.8°C).

Humidity

The average relative humidity in September is 78%.

Rainfall

The month with the least rainfall is September, when the rain falls for 16 days and typically collects 1.85" (47mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:55 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:10 pm EDT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

The average daily maximum UV index in September in Mammoth, West Virginia, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Mammoth?

In Mammoth, in September, the average high-temperature is 76.6°F (24.8°C), and the average low-temperature is 55°F (12.8°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is appraised at 89.6°F (32°C).

What is the average humidity in September in Mammoth?

In September, the average relative humidity in Mammoth, West Virginia, is 78%.

What is the driest month in Mammoth?

The month with the least rainfall in Mammoth is September, when the rain falls for 16 days and typically collects 1.85" (47mm) of precipitation.

How much does it rain in Mammoth in September?

In September, in Mammoth, West Virginia, the rain falls for 16 days. Throughout September, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Mammoth?

June through September are months without snowfall in Mammoth.

Does it snow in Mammoth in September?

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

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

The average day length in September is 12h and 25min.

When are sunrise and sunset in September in Mammoth?

On the first day of September in Mammoth, West Virginia, sunrise is at 6:55 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:10 pm EDT.

How long on average sun shines in September in Mammoth?

The average sunshine duration in September in Mammoth is 8.3h.

How high is the UV index in September in Mammoth?

In September, the average daily maximum UV index in Mammoth is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mammoth, West VA

Average temperature in September - Mammoth, West VA
  • Average high temperature in September: 76.6°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 (37.9°F).

  • Average low temperature in September: 55°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in September
Mammoth, West VA

Average pressure in September - Mammoth, West VA
  • 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 (29.98"Hg).

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Average wind speed in September
Mammoth, West VA

Average wind speed in September - Mammoth, West VA
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in September
Mammoth, West VA

Average humidity in September - Mammoth, West VA
  • Average humidity in September: 78%

The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are June, July, August and November (77%).

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Average rainfall in September
Mammoth, West VA

Average rainfall in September - Mammoth, West VA
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in September
Mammoth, West VA

Average rainfall days in September - Mammoth, West VA
  • Average rainfall days in September: 16 days

The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is November (12.1 days).

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Average snowfall in September
Mammoth, West VA

Average snowfall in September - Mammoth, West VA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.75").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Mammoth, West VA

Average snowfall days in September - Mammoth, West VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (13.5 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
Mammoth, West VA

Average daylight in September / Average sunshine in September - Mammoth, West VA
  • Average daylight in September: 12h and 25min

The month with the longest days is June (Average daylight: 14h and 47min).
The month with the shortest days is December (Average daylight: 9h and 34min).

  • Average sunshine in September: 8h and 18min

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 42min).

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Average sunshine days in September
Mammoth, West VA

Average sunshine days in September - Mammoth, West VA
  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is February (7.6 days).

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Average UV index in September
Mammoth, West VA

Average UV index in September - Mammoth, West VA
  • Average UV index in September: 4

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

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Average cloud cover in September
Mammoth, West VA

Average cloud cover in September - Mammoth, West VA
  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
Mammoth, West VA

Average visibility in September - Mammoth, West VA
  • Average visibility in September: 5mi

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

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