September weather forecast and climate
Summitville, NY

September, the first month of the autumn, in Summitville, is also an agreeable month, with average temperature fluctuating between 52.3°F (11.3°C) and 73°F (22.8°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 80.6°F (27°C) in August, to a pleasant 73°F (22.8°C). The average low-temperature, is 52.3°F (11.3°C).

Humidity

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

Rainfall

In Summitville, in September, during 11.1 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 147.3 rainfall days, and 19.88" (505mm) of precipitation is accumulated.

Snowfall

In Summitville snow does not fall in June through September.

Daylight

In Summitville, the average length of the day is 12.5h.

Sunshine

The average sunshine in September is 8.7h.

UV index

In Summitville, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
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 Summitville?

In Summitville, in September, the average high-temperature is 73°F (22.8°C), and the average low-temperature is 52.3°F (11.3°C).

What is the average humidity in September in Summitville?

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

How many days does it rain in September in Summitville?

In September, in Summitville, the rain falls for 11.1 days. Throughout September, 1.22" (31mm) of precipitation is accumulated.

Does it snow in Summitville in September?

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

When it does not snow in Summitville?

June through September are months without snowfall in Summitville.

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

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

How many hours of sunshine does Summitville have in September?

In Summitville, the average sunshine in September is 8.7h.

What is the UV index reading in September in Summitville?

In Summitville, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Summitville, NY
  • Average high temperature in September: 22.8°C

The warmest month (with the highest average high temperature) is July (28.1°C).
The month with the lowest average high temperature is January (-0.1°C).

  • Average low temperature in September: 11.3°C

The month with the highest average low temperature is July (15.6°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

Average pressure in September - Summitville, NY
  • Average pressure in September: 1017.9mbar

The month with the highest atmospheric pressure is November (1019.4mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in September - Summitville, NY
  • Average wind speed in September: 7.8km/h

The windiest months (with the highest average wind speed) are February and March (11km/h).
The calmest month (with the lowest average wind speed) is August (7.2km/h).

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

The month with the highest relative humidity is December (83%).
Months with the lowest relative humidity are April and July (76%).

Average rainfall in September - Summitville, NY
  • Average rainfall in September: 31mm

The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is January (29mm).

Average rainfall days in September - Summitville, NY
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (7.1 days).

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

The month with the highest snowfall is February (92mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is February (8.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.3h).

Average sunshine days in September - Summitville, NY
  • Average sunshine days in September: 16 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (11.5 days).

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

Months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September - Summitville, NY
  • Average cloud cover in September: 40

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 36).

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

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