September weather forecast
Tonawanda, NY

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Weather in September

The first month of the autumn, September, is still a pleasant month in Tonawanda, New York, with an average temperature fluctuating between 56.7°F (13.7°C) and 72°F (22.2°C).

Temperature

The start of September involves a subtle temperature drop, shifting from a warm 78.4°F (25.8°C) in August to an agreeable 72°F (22.2°C). Tonawanda's nighttime temperature during September is consistently averaged at a moderate 56.7°F (13.7°C).

Humidity

July through September, with an average relative humidity of 74%, are the least humid months.

Rainfall

September is the month with the least rainfall. Rain falls for 15 days and accumulates 1.81" (46mm) of precipitation.

Snowfall

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

Ocean temperature

In September, the average ocean temperature in Tonawanda is 68.5°F (20.3°C).
Note: Swimming in 68.5°F (20.3°C) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 69.8°F (21°C).

Daylight

The average length of the day in September in Tonawanda is 12h and 29min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:58 pm EDT.

Sunshine

The average sunshine in September in Tonawanda is 8.8h.

UV index

In September, the average daily maximum UV index in Tonawanda is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Exercise prevention - Warding off sunburn is urged. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the average September temperature in Tonawanda?

September temperatures in Tonawanda vary between a high-temperature of 72°F (22.2°C) and a low-temperature of 56.7°F (13.7°C).

What is the least humid month in Tonawanda?

The months with the lowest humidity are July through September, with an average relative humidity of 74%.

What is the average humidity in September in Tonawanda?

In September, the average relative humidity in Tonawanda is 74%.

What is the driest month in Tonawanda?

September is the month with the least rainfall in Tonawanda. Rain falls for 15 days and accumulates 1.81" (46mm) of precipitation.

How many days does it rain in September in Tonawanda?

In Tonawanda, in September, it is raining for 15 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow in Tonawanda?

June through September are months without snowfall in Tonawanda.

Does it snow in Tonawanda in September?

In Tonawanda, New York, in September, it doesn't snow. In October, it regularly snows.

What is the ocean temperature in September in Tonawanda?

In September, the average ocean temperature is 68.5°F (20.3°C). For swimming, a surface water temperature of 68.5°F (20.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Tonawanda have in September?

The average day length in September in Tonawanda, New York, is 12h and 29min.

When is the sunrise / sunset in September in Tonawanda?

On the first day of September in Tonawanda, sunrise is at 6:40 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm EDT.

How long on average sun shines in September in Tonawanda?

The average sunshine duration in September is 8.8h.

What is the UV index intensity in September in Tonawanda?

The average daily maximum UV index in September in Tonawanda, New York, 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Tonawanda, NY

Average temperature in September - Tonawanda, NY
  • Average high temperature in September: 72°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

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Average pressure in September
Tonawanda, NY

Average pressure in September - Tonawanda, NY
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Tonawanda, NY

Average wind speed in September - Tonawanda, NY
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in September
Tonawanda, NY

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

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July, August and September (74%).

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Average rainfall in September
Tonawanda, NY

Average rainfall in September - Tonawanda, NY
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in September
Tonawanda, NY

Average rainfall days in September - Tonawanda, NY
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.6 days).

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Average snowfall in September
Tonawanda, NY

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

The month with the highest snowfall is February (7.64").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Tonawanda, NY

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

The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Tonawanda, NY

Average sea temperature in September - Tonawanda, NY
  • Average sea temperature in September: 68.5°F

The best month for swimming (with the highest average sea temperature) is August (72.9°F).
The coldest month (with the lowest average sea temperature) is March (35.7°F).

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

Average daylight in September / Average sunshine in September - Tonawanda, NY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in September
Tonawanda, NY

Average sunshine days in September - Tonawanda, NY
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is September (12.5 days).
The month with the least sunshine days is January (6.3 days).

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Average UV index in September
Tonawanda, NY

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in September
Tonawanda, NY

Average cloud cover in September - Tonawanda, NY
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in September
Tonawanda, NY

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

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

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Tonawanda, New York, USA

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