September weather forecast
Grove City, PA

Weather in September

September, the first month of the autumn, in Grove City, is still a pleasant month, with average temperature fluctuating between 72.9°F (22.7°C) and 53.4°F (11.9°C).

Temperature

In Grove City, Pennsylvania, the average high-temperature slightly decreases, from a moderately hot 79.3°F (26.3°C) in August, to an agreeable 72.9°F (22.7°C). In September, in Grove City, the average low-temperature is 53.4°F (11.9°C).

Humidity

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

Rainfall

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

Snowfall

June through September are months without snowfall in Grove City.

Daylight

In Grove City, Pennsylvania, the average length of the day in September is 12.5h.

Sunshine

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

UV index

In September, the average daily maximum UV index in Grove City is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in Grove City?

In September, the average relative humidity is 81%.

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

In Grove City, during September, the rain falls for 15.3 days and regularly aggregates up to 2.56" (65mm) of precipitation.

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

What is the average length of the day in September in Grove City?

In September, the average length of the day is 12.5h.

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

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

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

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

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"

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

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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%

Months with the highest relative humidity are January and February (88%).
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").
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).
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: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.2h

Months with the most sunshine are July and August (Average sunshine: 9.9h).
The month with the least sunshine is January (Average sunshine: 2.4h).

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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

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).
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

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

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