September weather forecast and climate
Port Jervis, NY

September, the first month of the autumn, in Port Jervis, is also an agreeable month, with average temperature varying between 73°F (22.8°C) and 52.7°F (11.5°C).

Temperature

In September, the average high-temperature marginally drops, from a warm 80.1°F (26.7°C) in August, to an agreeable 73°F (22.8°C). The average low-temperature, in September, is 52.7°F (11.5°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, in Port Jervis, the rain falls for 11.5 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 150.5 rainfall days, and 19.37" (492mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

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

Sunshine

The average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 4 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Port Jervis?

In September, in Port Jervis, the average high-temperature is 73°F (22.8°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in September in Port Jervis?

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

How many days does it rain in September in Port Jervis?

In Port Jervis, in September, during 11.5 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

Does it snow in Port Jervis in September?

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

When it does not snow in Port Jervis?

In Port Jervis snow does not fall in June through September.

What is the average length of the day in September in Port Jervis?

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

How long on average sun shines in September in Port Jervis?

The average sunshine in September in Port Jervis is 8.7h.

What is the UV index intensity in September in Port Jervis?

The average daily maximum UV index in September in Port Jervis is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in September - Port Jervis, 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°C).

  • Average low temperature in September: 11.5°C

The month with the highest average low temperature is July (15.7°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

Average pressure in September - Port Jervis, NY
  • Average pressure in September: 1018mbar

The month with the highest atmospheric pressure is November (1019.6mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in September - Port Jervis, NY
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is March (12.2km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).

Average humidity in September - Port Jervis, NY
  • Average humidity in September: 79%

Months with the highest relative humidity are February and December (83%).
Months with the lowest relative humidity are April and July (77%).

Average rainfall in September - Port Jervis, NY
  • Average rainfall in September: 30mm

The wettest month (with the highest rainfall) is May (60mm).
The driest month (with the least rainfall) is January (26mm).

Average rainfall days in September - Port Jervis, NY
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (16.7 days).
Months with the least rainy days are January and February (8.6 days).

Average snowfall in September - Port Jervis, NY
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (78mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - Port Jervis, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (10 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.1h).
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: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.2h).

Average sunshine days in September - Port Jervis, NY
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is October (17.4 days).
Months with the least sunshine days are April and May (11.8 days).

Average UV index in September - Port Jervis, NY
  • Average UV index in September: 4

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September - Port Jervis, NY
  • Average cloud cover in September: 40

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in September - Port Jervis, NY
  • Average visibility in September: 7km

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