September weather forecast
Robertsdale, PA

Weather in September

September, the first month of the autumn in Robertsdale, is still a pleasant month, with an average temperature ranging between min 53.1°F (11.7°C) and max 73°F (22.8°C).

Temperature

In September, the average high-temperature slightly decreases from a warm 80.2°F (26.8°C) in August to an agreeable 73°F (22.8°C). In Robertsdale, in September, the average low-temperature is 53.1°F (11.7°C).

Humidity

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

Rainfall

In Robertsdale, during September, the rain falls for 12.5 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 146.6 rainfall days, and 19.84" (504mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Robertsdale, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:44 pm. On the last day of September, in Robertsdale, sunrise is at 7:07 am and sunset at 6:57 pm EDT.

Sunshine

In Robertsdale, Pennsylvania, the average sunshine in September is 8.5h.

UV index

In Robertsdale, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Robertsdale?

The average high-temperature, in September, in Robertsdale, Pennsylvania, is 73°F (22.8°C), while the average low-temperature is 53.1°F (11.7°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 89.6°F (32°C).

What is the average humidity in September in Robertsdale?

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

How many days does it rain in September in Robertsdale?

In Robertsdale, in September, during 12.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

When it does not snow in Robertsdale?

May through September are months without snowfall.

Does it snow in Robertsdale in September?

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

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

In September, the average day length in Robertsdale, Pennsylvania, is 12h and 26min.

What time are sunrise and sunset in September in Robertsdale?

On the first day of September in Robertsdale, Pennsylvania, sunrise is at 6:40 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm EDT.

How long on average sun shines in September in Robertsdale?

In September, the average sunshine duration is 8.5h.

What is the UV index intensity in September in Robertsdale?

The average daily maximum UV index in September in Robertsdale, Pennsylvania, is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Robertsdale, PA

Average temperature in September - Robertsdale, PA
  • Average high temperature in September: 73°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in September: 53.1°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

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Average pressure in September
Robertsdale, PA

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in September
Robertsdale, PA

Average wind speed in September - Robertsdale, PA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in September
Robertsdale, PA

Average humidity in September - Robertsdale, PA
  • Average humidity in September: 79%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in September
Robertsdale, PA

Average rainfall in September - Robertsdale, PA
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (1.18").

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Average rainfall days in September
Robertsdale, PA

Average rainfall days in September - Robertsdale, PA
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.5 days).

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Average snowfall in September
Robertsdale, PA

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

The month with the highest snowfall is February (3.74").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Robertsdale, PA

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

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Robertsdale, PA
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in September: 8h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in September
Robertsdale, PA

Average sunshine days in September - Robertsdale, PA
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).

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Average UV index in September
Robertsdale, PA

Average UV index in September - Robertsdale, PA
  • Average UV index in September: 4

The month with the highest UV index is June (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
Robertsdale, PA

Average cloud cover in September - Robertsdale, PA
  • Average cloud cover in September: 39

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in September
Robertsdale, PA

Average visibility in September - Robertsdale, PA
  • Average visibility in September: 5mi

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

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