September weather forecast
Ulster, PA

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Weather in September

September, the first month of the autumn in Ulster, is also an agreeable month, with an average temperature fluctuating between 70.7°F (21.5°C) and 50.2°F (10.1°C).

Temperature

With the beginning of September, the average high-temperature shows a small decrease, transitioning from a moderately hot 77.5°F (25.3°C) in August to a pleasant 70.7°F (21.5°C). Ulster reports an average low-temperature of 50.2°F (10.1°C) during the nights of September.

Humidity

In Ulster, Pennsylvania, the average relative humidity in September is 81%.

Rainfall

In Ulster, during September, the rain falls for 13.1 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Ulster, during the entire year, the rain falls for 164.7 days and collects up to 24.09" (612mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:48 pm EDT.

Sunshine

In September, the average sunshine is 8.4h.

UV index

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 3 during September translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Frequently asked questions

What are September temperatures?

An average high-temperature, in September, in Ulster, is 70.7°F (21.5°C) and the average low-temperature is 50.2°F (10.1°C).

What is the average humidity in September?

In Ulster, Pennsylvania, the average relative humidity in September is 81%.

How many days does it rain in September?

In Ulster, during September, the rain falls for 13.1 days and regularly aggregates up to 2.17" (55mm) of precipitation.

When it does not snow?

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

Does it snow in September?

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

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:48 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.4h.

How high is the UV index in September?

In Ulster, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Ulster, PA

Average temperature in September - Ulster, PA
  • Average high temperature in September: 70.7°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in September: 50.2°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in September
Ulster, PA

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

Average wind speed in September
Ulster, PA

Average wind speed in September - Ulster, PA
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Ulster, PA

Average humidity in September - Ulster, PA
  • Average humidity in September: 81%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, June and July (78%).

Average rainfall in September
Ulster, PA

Average rainfall in September - Ulster, PA
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in September
Ulster, PA

Average rainfall days in September - Ulster, PA
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Ulster, PA

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

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Ulster, PA

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

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Ulster, PA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 12min).

Average sunshine days in September
Ulster, PA

Average sunshine days in September - Ulster, PA
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in September
Ulster, PA

Average UV index in September - Ulster, PA
  • Average UV index in September: 3

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 and December (UV index 1).

Average cloud cover in September
Ulster, PA

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

The months with the most cloud cover are January, February and December (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in September
Ulster, PA

Average visibility in September - Ulster, 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).

Ulster, Pennsylvania, USA

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