September weather forecast
Grove City, PA

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Weather in September

The first month of the autumn, September, is also an agreeable month in Grove City, Pennsylvania, with an average temperature fluctuating between 53.4°F (11.9°C) and 72.9°F (22.7°C).

Temperature

As August makes way for September, Grove City's average high-temperature eases from a warm 79.3°F (26.3°C) to a pleasant 72.9°F (22.7°C). In September, Grove City encounters an average low-temperature of 53.4°F (11.9°C) during the night.

Humidity

In September, the average relative humidity is 81%.

Rainfall

In Grove City, in September, during 15.3 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Grove City, Pennsylvania, there are 180.3 rainfall days, and 35.39" (899mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Grove City, the average length of the day in September is 12h and 28min.
On the first day of September in Grove City, sunrise is at 6:47 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:03 pm EDT.

Sunshine

In September, the average sunshine in Grove City is 8.2h.

UV index

The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 3 during September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Around midday, solar radiation is most harmful; hence, exposure should be limited. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What is the temperature in September in Grove City?

September temperatures in Grove City vary between a high-temperature of 72.9°F (22.7°C) and a low-temperature of 53.4°F (11.9°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in September in Grove City?

In September, the average relative humidity in Grove City is 81%.

How many days does it rain in September in Grove City?

In Grove City, in September, during 15.3 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow in Grove City?

June through September are months without snowfall in Grove City.

Does it snow in Grove City in September?

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

How many hours of daylight does Grove City have in September?

In Grove City, the average day length in September is 12h and 28min.

When are sunrise and sunset in September in Grove City?

On the first day of September in Grove City, Pennsylvania, sunrise is at 6:47 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:03 pm EDT.

How many hours of sunshine does Grove City have in September?

In September, the average sunshine duration in Grove City, Pennsylvania, is 8.2h.

What is the UV index intensity in September in Grove City?

In Grove City, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Grove City, PA

Average temperature in September - Grove City, PA
  • Average high temperature in September: 72.9°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in September: 53.4°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in September
Grove City, PA

Average pressure in September - Grove City, PA
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Grove City, PA

Average wind speed in September - Grove City, PA
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in September
Grove City, PA

Average humidity in September - Grove City, PA
  • Average humidity in September: 81%

The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April, May, June, July and August (79%).

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Average rainfall in September
Grove City, PA

Average rainfall in September - Grove City, PA
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is April (3.66").
The driest month (with the least rainfall) is November (2.28").

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Average rainfall days in September
Grove City, PA

Average rainfall days in September - Grove City, PA
  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in September
Grove City, PA

Average snowfall in September - Grove City, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (9.33").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Grove City, PA

Average snowfall days in September - Grove City, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (20.2 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
Grove City, PA

Average daylight in September / Average sunshine in September - Grove City, PA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
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: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

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Average sunshine days in September
Grove City, PA

Average sunshine days in September - Grove City, PA
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is November (12.8 days).
The month with the least sunshine days is February (5.8 days).

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Average UV index in September
Grove City, PA

Average UV index in September - Grove City, PA
  • Average UV index in September: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Grove City, PA

Average cloud cover in September - Grove City, PA
  • Average cloud cover in September: 42

The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 37).

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Average visibility in September
Grove City, PA

Average visibility in September - Grove City, PA
  • Average visibility in September: 5mi

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

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Grove City, Pennsylvania, USA

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