September weather forecast
Sinking Spring, PA

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Weather in September

September, the first month of the autumn in Sinking Spring, is still a warm month, with temperature in the range of an average high of 74.5°F (23.6°C) and an average low of 55.6°F (13.1°C).

Temperature

With September's onset, the weather reveals a slight temperature decrease, transitioning from 80.6°F (27°C) in August to a still moderately hot 74.5°F (23.6°C). During the month of September, Sinking Spring experiences a steady low-temperature average of 55.6°F (13.1°C).

Humidity

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

Rainfall

September is the month with the least rainfall in Sinking Spring. Rain falls for 11.5 days and accumulates 1.85" (47mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September in Sinking Spring is 12h and 27min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm EDT.

Sunshine

In September, the average sunshine in Sinking Spring is 8.8h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The UV index of 4 in September translates into these instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What is the usual temperature for Sinking Spring in September?

In Sinking Spring, in September, the average high-temperature is 74.5°F (23.6°C), and the average low-temperature is 55.6°F (13.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in August is calculated to be 86°F (30°C).

What is the average humidity in September in Sinking Spring?

In September, the average relative humidity in Sinking Spring, Pennsylvania, is 79%.

What is the driest month in Sinking Spring?

The month with the least rainfall in Sinking Spring, Pennsylvania, is September, when the rain falls for 11.5 days and typically collects 1.85" (47mm) of precipitation.

How much does it rain in Sinking Spring in September?

In Sinking Spring, Pennsylvania, during September, the rain falls for 11.5 days and regularly aggregates up to 1.85" (47mm) of precipitation.

When it does not snow in Sinking Spring?

In Sinking Spring, snow does not fall in June through September.

Does it snow in Sinking Spring in September?

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

How many hours of daylight does Sinking Spring have in September?

In Sinking Spring, the average day length in September is 12h and 27min.

When is the sunrise / sunset in September in Sinking Spring?

On the first day of September in Sinking Spring, Pennsylvania, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm EDT.

How many hours of sunshine does Sinking Spring have in September?

The average sunshine duration in September is 8.8h.

What is the UV index reading in September in Sinking Spring?

In Sinking Spring, Pennsylvania, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Sinking Spring, PA

Average temperature in September - Sinking Spring, PA
  • Average high temperature in September: 74.5°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in September: 55.6°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in September
Sinking Spring, PA

Average pressure in September - Sinking Spring, PA
  • Average pressure in September: 30.06"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
Sinking Spring, PA

Average wind speed in September - Sinking Spring, PA
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in September
Sinking Spring, PA

Average humidity in September - Sinking Spring, PA
  • Average humidity in September: 79%

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in September
Sinking Spring, PA

Average rainfall in September - Sinking Spring, PA
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in September
Sinking Spring, PA

Average rainfall days in September - Sinking Spring, PA
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in September
Sinking Spring, PA

Average snowfall in September - Sinking Spring, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Sinking Spring, PA

Average snowfall days in September - Sinking Spring, PA
  • 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).

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Average daylight in September /
Average sunshine in September
Sinking Spring, PA

Average daylight in September / Average sunshine in September - Sinking Spring, PA
  • 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 24min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in September
Sinking Spring, PA

Average sunshine days in September - Sinking Spring, PA
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (11.2 days).

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Average UV index in September
Sinking Spring, PA

Average UV index in September - Sinking Spring, PA
  • Average UV index in September: 4

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

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Average cloud cover in September
Sinking Spring, PA

Average cloud cover in September - Sinking Spring, PA
  • Average cloud cover in September: 38

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Sinking Spring, PA

Average visibility in September - Sinking Spring, PA
  • Average visibility in September: 5mi

The months with the highest visibility are January, March, April, June, July, November and December (6mi).
The months with the lowest visibility are February, May, August, September and October (5mi).

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Sinking Spring, Pennsylvania, USA

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