September weather forecast and climate
Youngstown, NY

Weather in September

The first month of the autumn, September, is still a pleasant month in Youngstown, New York, with average temperature varying between 70.7°F (21.5°C) and 59.9°F (15.5°C).

Temperature

In September, the average high-temperature marginally drops, from a warm 76.3°F (24.6°C) in August, to an agreeable 70.7°F (21.5°C). The average low-temperature, in September, is 59.9°F (15.5°C).

Humidity

With an average relative humidity of 74%, September is the least humid month.

Rainfall

September and November are months with the least rain when the rain falls for 15.1 days and typically aggregates up to 2.17" (55mm) of rain.

Snowfall

In Youngstown snow does not fall in June through September.

Ocean temperature

In September, the average ocean temperature in Youngstown is 69.4°F (20.8°C).
Note: Swimming in 69.4°F (20.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in Youngstown is 12.5h.

Sunshine

The average sunshine in Youngstown is 9.4h.

UV index

The average daily maximum UV index in Youngstown is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Youngstown?

The average high-temperature, in September, in Youngstown, is 70.7°F (21.5°C), while the average low-temperature is 59.9°F (15.5°C).

What is the least humid month in Youngstown?

The least humid month in Youngstown is September, with an average relative humidity of 74%.

What is the average humidity in September in Youngstown?

The average relative humidity in September in Youngstown is 74%.

How many days does it rain in September in Youngstown?

In September, in Youngstown, New York, the rain falls for 15.1 days. Throughout September, 2.17" (55mm) of precipitation is accumulated.

What is the driest month in Youngstown?

Months with the least rainfall in Youngstown are September and November Rain falls for 15.1 days and accumulates 2.17" (55mm) of rain.

Does it snow in Youngstown in September?

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

When it does not snow in Youngstown?

In Youngstown snow does not fall in June through September.

What is the ocean temperature in September in Youngstown?

In Youngstown, New York, in September, the average water temperature is 69.4°F (20.8°C). For most, swimming in 69.4°F (20.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

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

In September, the average length of the day in Youngstown is 12.5h.

How many hours of sunshine does Youngstown have in September?

In September, the average sunshine is 9.4h.

What is the UV index intensity in September in Youngstown?

In September, the average daily maximum UV index in Youngstown, New York, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Youngstown, NY

Average temperature in September - Youngstown, NY
  • Average high temperature in September: 70.7°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in September
Youngstown, NY

Average pressure in September - Youngstown, NY
  • Average pressure in September: 30.04"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in September
Youngstown, NY

Average wind speed in September - Youngstown, NY
  • Average wind speed in September: 8.8mph

The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

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Average humidity in September
Youngstown, NY

Average humidity in September - Youngstown, NY
  • Average humidity in September: 74%

Months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in September
Youngstown, NY

Average rainfall in September - Youngstown, NY
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is July (3.15").
The driest months (with the least rainfall) are September and November (2.17").

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Average rainfall days in September
Youngstown, NY

Average rainfall days in September - Youngstown, NY
  • Average rainfall days in September: 15.1 days

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in September
Youngstown, NY

Average snowfall in September - Youngstown, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Youngstown, NY

Average snowfall days in September - Youngstown, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (14.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Youngstown, NY

Average sea temperature in September - Youngstown, NY
  • Average sea temperature in September: 69.4°F

The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (35°F).

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Average daylight in September /
Average sunshine in September
Youngstown, NY

Average daylight in September / Average sunshine in September - Youngstown, NY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 2.8h).

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Average sunshine days in September
Youngstown, NY

Average sunshine days in September - Youngstown, NY
  • Average sunshine days in September: 13 days

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

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Average UV index in September
Youngstown, NY

Average UV index in September - Youngstown, NY
  • Average UV index in September: 4

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Youngstown, NY

Average cloud cover in September - Youngstown, NY
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Youngstown, NY

Average visibility in September - Youngstown, NY
  • Average visibility in September: 6mi

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

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