September weather forecast
Saint Nicholas, PA

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Weather in September

The first month of the autumn, September, is still a pleasant month in Saint Nicholas, Pennsylvania, with an average temperature ranging between max 72.7°F (22.6°C) and min 53.8°F (12.1°C).

Temperature

Saint Nicholas's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 78.4°F (25.8°C) in August to a pleasant 72.7°F (22.6°C). An average low-temperature of 53.8°F (12.1°C) is common during the nights of September.

Humidity

In September, the average relative humidity is 80%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 1.97" (50mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm EDT.

Sunshine

In Saint Nicholas, the average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 4 during September leads to these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

In September, in Saint Nicholas, the average high-temperature is 72.7°F (22.6°C), and the average low-temperature is 53.8°F (12.1°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 86°F (30°C).

What is the average humidity in September?

In Saint Nicholas, 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 12.5 days and typically collects 1.97" (50mm) of precipitation.

How much does it rain in September?

In September, the rain falls for 12.5 days. Throughout September, 1.97" (50mm) of precipitation is accumulated.

When it does not snow?

In Saint Nicholas, Pennsylvania, snow does not fall in June through September.

Does it snow in September?

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

What is the average length of the day in September?

In Saint Nicholas, the average day length in September is 12h and 27min.

What time are sunrise and sunset in September in Saint Nicholas?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.8h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Saint Nicholas, PA

Average temperature in September - Saint Nicholas, PA
  • Average high temperature in September: 72.7°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 (31.8°F).

  • Average low temperature in September: 53.8°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

Average pressure in September
Saint Nicholas, PA

Average pressure in September - Saint Nicholas, 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
Saint Nicholas, PA

Average wind speed in September - Saint Nicholas, PA
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Saint Nicholas, PA

Average humidity in September - Saint Nicholas, 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
Saint Nicholas, PA

Average rainfall in September - Saint Nicholas, PA
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in September
Saint Nicholas, PA

Average rainfall days in September - Saint Nicholas, PA
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in September
Saint Nicholas, PA

Average snowfall in September - Saint Nicholas, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (7.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Saint Nicholas, PA

Average snowfall days in September - Saint Nicholas, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Saint Nicholas, PA

Average daylight in September / Average sunshine in September - Saint Nicholas, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).

Average sunshine days in September
Saint Nicholas, PA

Average sunshine days in September - Saint Nicholas, PA
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (9.1 days).

Average UV index in September
Saint Nicholas, PA

Average UV index in September - Saint Nicholas, PA
  • Average UV index in September: 4

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Saint Nicholas, PA

Average cloud cover in September - Saint Nicholas, PA
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in September
Saint Nicholas, PA

Average visibility in September - Saint Nicholas, 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).

Saint Nicholas, Pennsylvania, USA

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