September weather forecast and climate
Marcy, NY

The first month of the autumn, September, is still a pleasant month in Marcy, New York, with average temperature ranging between min 50.5°F (10.3°C) and max 69.3°F (20.7°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 75.7°F (24.3°C) in August, to an agreeable 69.3°F (20.7°C). In September, in Marcy, the average low-temperature is 50.5°F (10.3°C).

Humidity

In Marcy, the average relative humidity in September is 80%.

Rainfall

The month with the least rainfall in Marcy is September when the rain falls for 14.1 days and typically collects 2.6" (66mm) of precipitation.

Snowfall

In Marcy, New York, snow does not fall in June through September.

Daylight

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

Sunshine

In Marcy, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in Marcy is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.

What is the temperature in September in Marcy?

The average high-temperature, in September, in Marcy, is 69.3°F (20.7°C), while the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in September in Marcy?

In September, the average relative humidity in Marcy, New York, is 80%.

How much does it rain in Marcy in September?

In Marcy, New York, during September, the rain falls for 14.1 days and regularly aggregates up to 2.6" (66mm) of precipitation.

What is the driest month in Marcy?

September is the month with the least rainfall in Marcy. Rain falls for 14.1 days and accumulates 2.6" (66mm) of precipitation.

Does it snow in Marcy in September?

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

When it does not snow in Marcy?

June through September are months without snowfall.

How many hours of daylight does Marcy have in September?

In Marcy, New York, the average length of the day in September is 12.5h.

How long on average sun shines in September in Marcy?

In September, the average sunshine is 8.8h.

How high is the UV index in September in Marcy?

In September, the average daily maximum UV index in Marcy is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Marcy, NY
  • Average high temperature in September: 20.7°C

The warmest month (with the highest average high temperature) is July (25.5°C).
The month with the lowest average high temperature is January (-3.1°C).

  • Average low temperature in September: 10.3°C

The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).

Average pressure in September - Marcy, NY
  • Average pressure in September: 1017.7mbar

The month with the highest atmospheric pressure is November (1019mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in September - Marcy, NY
  • Average wind speed in September: 10km/h

The windiest month (with the highest average wind speed) is January (15.6km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).

Average humidity in September - Marcy, NY
  • Average humidity in September: 80%

Months with the highest relative humidity are January and February (88%).
Months with the lowest relative humidity are April and May (78%).

Average rainfall in September - Marcy, NY
  • Average rainfall in September: 66mm

The wettest month (with the highest rainfall) is April (97mm).
The driest month (with the least rainfall) is September (66mm).

Average rainfall days in September - Marcy, NY
  • Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (8.2 days).

Average snowfall in September - Marcy, NY
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (285mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (20.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Marcy, 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: 8.8h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is February (Average sunshine: 2.4h).

Average sunshine days in September - Marcy, NY
  • Average sunshine days in September: 13.4 days

The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is February (4.4 days).

Average UV index in September - Marcy, NY
  • Average UV index in September: 3

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in September - Marcy, NY
  • Average cloud cover in September: 37

The month with the most cloud cover is February (Cloud cover 75).
Months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in September - Marcy, NY
  • Average visibility in September: 8km

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
Months with the lowest visibility are January and February (7km).