September weather forecast
Folsom, WV

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Weather in September

September, the first month of the autumn in Folsom, is still a warm month, with an average temperature fluctuating between 54.7°F (12.6°C) and 76.1°F (24.5°C).

Temperature

A minor decrease in the average high-temperature is observed during September, shifting from a moderately hot 82°F (27.8°C) in August to a still warm 76.1°F (24.5°C). Folsom cools down to an average low-temperature of 54.7°F (12.6°C) throughout the month of September.

Humidity

The average relative humidity in September is 79%.

Rainfall

In Folsom, during September, the rain falls for 15.4 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, in Folsom, there are 188.6 rainfall days, and 39.17" (995mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Folsom.

Daylight

In Folsom, 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 7:52 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:05 pm EDT.

Sunshine

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

UV index

The average daily maximum UV index in September in Folsom, West Virginia, is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 4 during September translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature, in September, in Folsom, is 76.1°F (24.5°C), while the low-temperature averages to 54.7°F (12.6°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September is 79%.

How many days does it rain in September?

In Folsom, in September, it is raining for 15.4 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In Folsom, the average day length in September is 12h and 26min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:51 am and sunset at 7:52 pm. On the last day of the month, in Folsom, sunrise is at 7:17 am and sunset at 7:05 pm EDT.

How many hours of sunshine does Folsom have in September?

In Folsom, the average sunshine duration in September is 8.5h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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
Folsom, WV

Average temperature in September - Folsom, WV
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in September
Folsom, WV

Average pressure in September - Folsom, WV
  • Average pressure in September: 30.05"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
Folsom, WV

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

The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in September
Folsom, WV

Average humidity in September - Folsom, WV
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (77%).

Average rainfall in September
Folsom, WV

Average rainfall in September - Folsom, WV
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in September
Folsom, WV

Average rainfall days in September - Folsom, WV
  • Average rainfall days in September: 15.4 days

The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is January (10.8 days).

Average snowfall in September
Folsom, WV

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

The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Folsom, WV

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

The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Folsom, 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 24min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in September
Folsom, WV

Average sunshine days in September - Folsom, WV
  • Average sunshine days in September: 12.2 days

The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (7.8 days).

Average UV index in September
Folsom, WV

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

The months with the highest UV index are May 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
Folsom, WV

Average cloud cover in September - Folsom, WV
  • Average cloud cover in September: 40

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in September
Folsom, WV

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

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

Folsom, West Virginia, USA

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