September weather forecast
Syracuse, NY

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A water fountain in the Clinton Square in Syracuse, New York, with a view of towering historical buildings
A water fountain in the Clinton Square in Syracuse, New York, with a view of towering historical buildings

Weather in September

September brings a decline in temperature in Syracuse, nudging the weather towards autumn, as temperatures approach 70°F (21.1°C). This month initiates a retreat from summer's peak, paving the way for the fall season. Decrease in daylight hours signifies the progressing yearly cycle but plenty of warmth and sun remain to enjoy. Rainfall becomes less frequent, further enhancing the overall pleasant ambiance. As leaves begin to change, September gifts Syracuse with the beginnings of a picturesque autumn.

Temperature

The transition into September in Syracuse involves a small decrease in the average high-temperature, dipping slightly from a warm 76.5°F (24.7°C) in August to a pleasant 70.3°F (21.3°C). The average low-temperature of 52.5°F (11.4°C) is witnessed in Syracuse during September.

Humidity

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

Rainfall

September is the month with the least rainfall in Syracuse. Rain falls for 11.2 days and accumulates 1.02" (26mm) of precipitation.

Snowfall

In Syracuse, snow does not fall in May through September.

Daylight

In September, the average length of the day in Syracuse is 12h and 29min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:38 pm. On the last day of September, in Syracuse, sunrise is at 7:01 am and sunset at 6:47 pm EDT.

Sunshine

In Syracuse, New York, the average sunshine in September is 9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 3 during September translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What are September temperatures in Syracuse?

September temperatures in Syracuse, New York, vary between a high-temperature of 70.3°F (21.3°C) and a low-temperature of 52.5°F (11.4°C).

What is the average humidity in September in Syracuse?

In September, the average relative humidity in Syracuse, New York, is 79%.

What is the driest month in Syracuse?

The month with the least rainfall in Syracuse is September, when the rain falls for 11.2 days and typically collects 1.02" (26mm) of precipitation.

How much does it rain in Syracuse in September?

In Syracuse, New York, in September, it is raining for 11.2 days, with typically 1.02" (26mm) of accumulated precipitation.

When it does not snow in Syracuse?

May through September are months without snowfall in Syracuse, New York.

Does it snow in Syracuse in September?

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

How many hours of daylight does Syracuse have in September?

In Syracuse, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Syracuse?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:38 pm. On the last day of the month, in Syracuse, New York, sunrise is at 7:01 am and sunset at 6:47 pm EDT.

How many hours of sunshine does Syracuse have in September?

In September, the average sunshine duration in Syracuse, New York, is 9h.

What is the UV index intensity in September in Syracuse?

In September, the average daily maximum UV index in Syracuse is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Syracuse, NY

Average temperature in September - Syracuse, NY
  • Average high temperature in September: 70.3°F

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in September: 52.5°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in September
Syracuse, NY

Average pressure in September - Syracuse, NY
  • Average pressure in September: 30.05"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
Syracuse, NY

Average wind speed in September - Syracuse, NY
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in September
Syracuse, NY

Average humidity in September - Syracuse, NY
  • Average humidity in September: 79%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (78%).

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Average rainfall in September
Syracuse, NY

Average rainfall in September - Syracuse, NY
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is September (1.02").

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Average rainfall days in September
Syracuse, NY

Average rainfall days in September - Syracuse, NY
  • Average rainfall days in September: 11.2 days

The months with the highest number of rainy days are May and July (15 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in September
Syracuse, NY

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

The months with the highest snowfall are February and December (3.62").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Syracuse, NY

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

The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Syracuse, 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: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).

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Average sunshine days in September
Syracuse, NY

Average sunshine days in September - Syracuse, NY
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is February (7.2 days).

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Average UV index in September
Syracuse, NY

Average UV index in September - Syracuse, NY
  • 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).

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Average cloud cover in September
Syracuse, NY

Average cloud cover in September - Syracuse, NY
  • Average cloud cover in September: 35

The months with the most cloud cover are January and February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in September
Syracuse, NY

Average visibility in September - Syracuse, 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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Syracuse, New York, USA

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