September weather forecast
Clarks Summit, PA

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Weather in September

September, the first month of the autumn in Clarks Summit, is also an agreeable month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 51.1°F (10.6°C).

Temperature

With the onset of September, Clarks Summit's average high-temperature slightly adjusts, moderately receding from August's moderately hot 77.9°F (25.5°C) to an agreeable 71.2°F (21.8°C). Clarks Summit experiences a consistent average temperature of 51.1°F (10.6°C) throughout the nights in September.

Humidity

The average relative humidity in September in Clarks Summit is 80%.

Rainfall

The month with the least rainfall in Clarks Summit is September, when the rain falls for 12.6 days and typically collects 2.01" (51mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Clarks Summit is 12h and 28min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:35 pm. On the last day of September, in Clarks Summit, sunrise is at 6:59 am and sunset at 6:45 pm EDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 3 in September leads to these recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What is the average September temperature in Clarks Summit?

An average high-temperature, in September, in Clarks Summit, is 71.2°F (21.8°C) and the average low-temperature is 51.1°F (10.6°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in July is evaluated at 84.2°F (29°C).

What is the average humidity in September in Clarks Summit?

In September, the average relative humidity in Clarks Summit, Pennsylvania, is 80%.

What is the driest month in Clarks Summit?

The month with the least rainfall in Clarks Summit, Pennsylvania, is September, when the rain falls for 12.6 days and typically collects 2.01" (51mm) of precipitation.

How many days does it rain in September in Clarks Summit?

In Clarks Summit, Pennsylvania, during September, the rain falls for 12.6 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow in Clarks Summit?

June through September are months without snowfall in Clarks Summit, Pennsylvania.

Does it snow in Clarks Summit in September?

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

How many hours of daylight does Clarks Summit have in September?

In September, the average day length in Clarks Summit is 12h and 28min.

What time are sunrise and sunset in September in Clarks Summit?

On the first day of September in Clarks Summit, sunrise is at 6:29 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm EDT.

How long on average sun shines in September in Clarks Summit?

In September, the average sunshine duration in Clarks Summit is 8.5h.

What is the UV index intensity in September in Clarks Summit?

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes 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
Clarks Summit, PA

Average temperature in September - Clarks Summit, PA
  • Average high temperature in September: 71.2°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in September: 51.1°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in September
Clarks Summit, PA

Average pressure in September - Clarks Summit, PA
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Clarks Summit, PA

Average wind speed in September - Clarks Summit, PA
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are January, February, March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Clarks Summit, PA

Average humidity in September - Clarks Summit, PA
  • Average humidity in September: 80%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (77%).

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Average rainfall in September
Clarks Summit, PA

Average rainfall in September - Clarks Summit, PA
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is July (3.15").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in September
Clarks Summit, PA

Average rainfall days in September - Clarks Summit, PA
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in September
Clarks Summit, PA

Average snowfall in September - Clarks Summit, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (9.13").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Clarks Summit, PA

Average snowfall days in September - Clarks Summit, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.7 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
Clarks Summit, PA

Average daylight in September / Average sunshine in September - Clarks Summit, 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 12min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 24min).

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Average sunshine days in September
Clarks Summit, PA

Average sunshine days in September - Clarks Summit, PA
  • Average sunshine days in September: 15 days

The month with the most sunshine days is September (15 days).
The month with the least sunshine days is May (9.3 days).

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Average UV index in September
Clarks Summit, PA

Average UV index in September - Clarks Summit, 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
Clarks Summit, PA

Average cloud cover in September - Clarks Summit, PA
  • Average cloud cover in September: 44

The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 38).

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Average visibility in September
Clarks Summit, PA

Average visibility in September - Clarks Summit, PA
  • Average visibility in September: 5mi

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

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Clarks Summit, Pennsylvania, USA

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