September weather forecast
Weirton, WV

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Weather in September

Transitioning into autumn, September observes a significant drop in temperatures from 81.9°F (27.7°C) in August to 75.2°F (24°C). Daylight hours gradually dwindle, with the amount of direct sunlight also decreasing. Weather patterns indicate a continuity in the frequency and volume of rainfall. On the contrary, wind speed slightly resurges after the tranquility of the summer months. With subtle changes in weather oscillating between the summer warmth and onset of autumn, September presents a pleasant ambience.

Temperature

The arrival of September signals a subtle shift in temperature, down from a warm 81.9°F (27.7°C) in August to a still moderately hot 75.2°F (24°C). The average temperature during September nights dips to a fresh 55°F (12.8°C).

Humidity

In September, the average relative humidity in Weirton is 79%.

Rainfall

In September, the rain falls for 14.9 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. In Weirton, during the entire year, the rain falls for 175.9 days and collects up to 31.22" (793mm) of precipitation.

Snowfall

June through September are months without snowfall in Weirton.

Daylight

In Weirton, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:50 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:05 pm EDT.

Sunshine

The average sunshine in September in Weirton is 8.2h.

UV index

The average daily maximum UV index in September in Weirton is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In September, the UV index of 4 transforms into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the usual temperature for Weirton in September?

Weirton in September has an average high-temperature of 75.2°F (24°C) and an average low-temperature of 55°F (12.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is evaluated at 87.8°F (31°C).

What is the average humidity in September in Weirton?

In Weirton, West Virginia, the average relative humidity in September is 79%.

How many days does it rain in September in Weirton?

In Weirton, in September, it is raining for 14.9 days, with typically 2.4" (61mm) of accumulated precipitation.

When it does not snow in Weirton?

In Weirton, West Virginia, snow does not fall in June through September.

Does it snow in Weirton in September?

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

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

In September, the average day length in Weirton, West Virginia, is 12h and 27min.

What time are sunrise and sunset in September in Weirton?

On the first day of September in Weirton, sunrise is at 6:50 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:05 pm EDT.

How many hours of sunshine does Weirton have in September?

In Weirton, the average sunshine duration in September is 8.2h.

What is the UV index reading in September in Weirton?

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
Weirton, WV

Average temperature in September - Weirton, WV
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in September: 55°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 (20.3°F).

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Average pressure in September
Weirton, WV

Average pressure in September - Weirton, WV
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Weirton, WV

Average wind speed in September - Weirton, WV
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average humidity in September
Weirton, WV

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

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

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Average rainfall in September
Weirton, WV

Average rainfall in September - Weirton, WV
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is November (2.17").

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Average rainfall days in September
Weirton, WV

Average rainfall days in September - Weirton, WV
  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.4 days).

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Average snowfall in September
Weirton, WV

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

The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Weirton, WV

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

The month with the highest number of snowfall days is January (15.5 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
Weirton, WV

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 8h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in September
Weirton, WV

Average sunshine days in September - Weirton, WV
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is November (15.5 days).
The months with the least sunshine days are January and May (8.8 days).

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Average UV index in September
Weirton, WV

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

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Weirton, WV

Average cloud cover in September - Weirton, 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 35).

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Average visibility in September
Weirton, WV

Average visibility in September - Weirton, 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 and February (4mi).

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Weirton, West Virginia, USA

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