September weather forecast
Rock Creek, WV

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Weather in September

September, the first month of the autumn in Rock Creek, is still a warm month, with an average temperature ranging between min 54.1°F (12.3°C) and max 76.5°F (24.7°C).

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from 82.4°F (28°C) in August to a still moderately hot 76.5°F (24.7°C). Despite the drastic temperature difference, Rock Creek records an average nighttime low of 54.1°F (12.3°C) throughout September.

Humidity

The average relative humidity in September is 78%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 0.71" (18mm) of precipitation.

Snowfall

In Rock Creek, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 6:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:09 pm EDT.

Sunshine

In Rock Creek, the average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

The high-temperature, in September, in Rock Creek, records 76.5°F (24.7°C), while the low-temperature is 54.1°F (12.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is evaluated at 89.6°F (32°C).

What is the average humidity in September?

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

What is the driest month?

The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 0.71" (18mm) of precipitation.

How many days does it rain in September?

In Rock Creek, during September, the rain falls for 10.8 days and regularly aggregates up to 0.71" (18mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In Rock Creek, the average day length in September is 12h and 25min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:09 pm EDT.

How many hours of sunshine does Rock Creek have in September?

In September, the average sunshine duration is 8.3h.

What is the UV index intensity in September?

In Rock Creek, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Rock Creek, WV

Average temperature in September - Rock Creek, WV
  • Average high temperature in September: 76.5°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 (38.7°F).

  • Average low temperature in September: 54.1°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

Average pressure in September
Rock Creek, WV

Average pressure in September - Rock Creek, 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 (29.98"Hg).

Average wind speed in September
Rock Creek, WV

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

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 (4.1mph).

Average humidity in September
Rock Creek, WV

Average humidity in September - Rock Creek, WV
  • Average humidity in September: 78%

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

Average rainfall in September
Rock Creek, WV

Average rainfall in September - Rock Creek, WV
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is September (0.71").

Average rainfall days in September
Rock Creek, WV

Average rainfall days in September - Rock Creek, WV
  • Average rainfall days in September: 10.8 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (7.8 days).

Average snowfall in September
Rock Creek, WV

Average snowfall in September - Rock Creek, WV
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.13").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Rock Creek, WV

Average snowfall days in September - Rock Creek, WV
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Rock Creek, WV

Average daylight in September / Average sunshine in September - Rock Creek, 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in September
Rock Creek, WV

Average sunshine days in September - Rock Creek, WV
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (12.6 days).

Average UV index in September
Rock Creek, WV

Average UV index in September - Rock Creek, WV
  • Average UV index in September: 4

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

Average cloud cover in September
Rock Creek, WV

Average cloud cover in September - Rock Creek, WV
  • Average cloud cover in September: 39

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in September
Rock Creek, WV

Average visibility in September - Rock Creek, 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).

Rock Creek, West Virginia, USA

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