September weather forecast
Coles Mill, PA

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Weather in September

The first month of the autumn, September, is still a pleasant month in Coles Mill, Pennsylvania, with an average temperature ranging between max 72.5°F (22.5°C) and min 52.2°F (11.2°C).

Temperature

September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderately hot 78.6°F (25.9°C) to a pleasant 72.5°F (22.5°C). During the nights in September, Coles Mill experiences a consistent average temperature of 52.2°F (11.2°C).

Humidity

The average relative humidity in September is 80%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 2.05" (52mm) of precipitation.

Snowfall

In Coles Mill, snow does not fall in June through September.

Daylight

In Coles Mill, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:49 pm EDT.

Sunshine

In Coles Mill, the average sunshine in September is 8.6h.

UV index

In Coles Mill, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.

Frequently asked questions

What are September temperatures?

In September, in Coles Mill, the average high-temperature is 72.5°F (22.5°C), and the average low-temperature is 52.2°F (11.2°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in July is computed to be 87.8°F (31°C).

What is the average humidity in September?

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

What is the driest month?

The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 2.05" (52mm) of precipitation.

How many days does it rain in September?

In Coles Mill, in September, it is raining for 12.8 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In Coles Mill, the average day length in September is 12h and 28min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:33 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:49 pm EDT.

How long on average sun shines in September in Coles Mill?

In September, the average sunshine duration is 8.6h.

What is the UV index intensity in September?

The average daily maximum UV index in September in Coles Mill is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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
Coles Mill, PA

Average temperature in September - Coles Mill, PA
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in September: 52.2°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average pressure in September
Coles Mill, PA

Average pressure in September - Coles Mill, PA
  • Average pressure in September: 30.07"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).

Average wind speed in September
Coles Mill, PA

Average wind speed in September - Coles Mill, PA
  • Average wind speed in September: 5.5mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Coles Mill, PA

Average humidity in September - Coles Mill, PA
  • Average humidity in September: 80%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall in September
Coles Mill, PA

Average rainfall in September - Coles Mill, PA
  • Average rainfall in September: 2.05"

The wettest months (with the highest rainfall) are April and May (2.99").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in September
Coles Mill, PA

Average rainfall days in September - Coles Mill, PA
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in September
Coles Mill, PA

Average snowfall in September - Coles Mill, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Coles Mill, PA

Average snowfall days in September - Coles Mill, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Coles Mill, PA

Average daylight in September / Average sunshine in September - Coles Mill, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in September
Coles Mill, PA

Average sunshine days in September - Coles Mill, PA
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is February (9.8 days).

Average UV index in September
Coles Mill, PA

Average UV index in September - Coles Mill, PA
  • Average UV index in September: 4

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
Coles Mill, PA

Average cloud cover in September - Coles Mill, PA
  • Average cloud cover in September: 40

The months with the most cloud cover are February and December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 35).

Average visibility in September
Coles Mill, PA

Average visibility in September - Coles Mill, PA
  • Average visibility in September: 5mi

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

Coles Mill, Pennsylvania, USA

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