September weather forecast
Prompton, PA

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Weather in September

The first month of the autumn, September, is also an agreeable month in Prompton, Pennsylvania, with an average temperature ranging between min 51.3°F (10.7°C) and max 71.8°F (22.1°C).

Temperature

As Prompton enters September, the average high-temperature subtly lowers from the a moderately hot 78.6°F (25.9°C) of August to an agreeable 71.8°F (22.1°C). An average nighttime temperature of 51.3°F (10.7°C) is recorded during September.

Humidity

In Prompton, the average relative humidity in September is 80%.

Rainfall

January and September are months with the least rain when the rain falls for 9.4 days and typically aggregates up to 1.14" (29mm) of rain.

Snowfall

In Prompton, snow does not fall in June through September.

Daylight

In Prompton, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:28 am and sunset at 7:34 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:44 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Prompton, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 3 in September translates into the following instructions:
Adopt protective measures - It is advised to guard against sun damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Frequently asked questions

What is the usual temperature for Prompton in September?

Prompton in September has an average high-temperature of 71.8°F (22.1°C) and an average low-temperature of 51.3°F (10.7°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 80%.

What is the driest month?

The months with the least rainfall are January and September Rain falls for 9.4 days and accumulates 1.14" (29mm) of rain.

How many days does it rain in September in Prompton?

In Prompton, in September, during 9.4 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in Prompton in September?

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

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

The average day length in September is 12h and 28min.

What time are sunrise and sunset in September in Prompton?

In September, on the first day of the month, sunrise is at 6:28 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.6h.

How high is the UV index in September?

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

Average temperature in September - Prompton, PA
  • Average high temperature in September: 71.8°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in September: 51.3°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).

Average pressure in September
Prompton, PA

Average pressure in September - Prompton, 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 (29.93"Hg).

Average wind speed in September
Prompton, PA

Average wind speed in September - Prompton, PA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Prompton, PA

Average humidity in September - Prompton, PA
  • Average humidity in September: 80%

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

Average rainfall in September
Prompton, PA

Average rainfall in September - Prompton, PA
  • Average rainfall in September: 1.14"

The wettest months (with the highest rainfall) are July and August (2.09").
The driest months (with the least rainfall) are January and September (1.14").

Average rainfall days in September
Prompton, PA

Average rainfall days in September - Prompton, PA
  • Average rainfall days in September: 9.4 days

The month with the highest number of rainy days is May (15.6 days).
The months with the least rainy days are January and February (6.9 days).

Average snowfall in September
Prompton, PA

Average snowfall in September - Prompton, PA
  • Average snowfall in September: 0"

The months with the highest snowfall are January and December (3.27").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Prompton, PA

Average snowfall days in September - Prompton, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Prompton, PA

Average daylight in September / Average sunshine in September - Prompton, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

Average sunshine days in September
Prompton, PA

Average sunshine days in September - Prompton, PA
  • Average sunshine days in September: 18.6 days

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (12.5 days).

Average UV index in September
Prompton, PA

Average UV index in September - Prompton, 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).

Average cloud cover in September
Prompton, PA

Average cloud cover in September - Prompton, PA
  • Average cloud cover in September: 43

The months with the most cloud cover are February and December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in September
Prompton, PA

Average visibility in September - Prompton, 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).

Prompton, Pennsylvania, USA

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