September weather forecast and climate
Port Republic, NJ

The first month of the autumn, September, is also a moderately hot month in Port Republic, New Jersey, with average temperature fluctuating between 74.3°F (23.5°C) and 65.3°F (18.5°C).

Temperature

In Port Republic, the average high-temperature slightly decreases, from 80.2°F (26.8°C) in August, to a still warm 74.3°F (23.5°C). In Port Republic, in September, the average low-temperature is 65.3°F (18.5°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

September is the month with the least rainfall in Port Republic. Rain falls for 6.1 days and accumulates 0.28" (7mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in Port Republic, New Jersey, is 12.4h.

Sunshine

In September, the average sunshine in Port Republic is 9.2h.

UV index

The average daily maximum UV index in Port Republic is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
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. 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 Port Republic?

The average high-temperature, in September, in Port Republic, New Jersey, is 74.3°F (23.5°C), while the average low-temperature is 65.3°F (18.5°C).

What is the average humidity in September in Port Republic?

In Port Republic, New Jersey, the average relative humidity in September is 77%.

How much does it rain in Port Republic in September?

In Port Republic, New Jersey, in September, during 6.1 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

What is the driest month in Port Republic?

September is the month with the least rainfall in Port Republic. Rain falls for 6.1 days and accumulates 0.28" (7mm) of precipitation.

When it does not snow in Port Republic?

April through November are months without snowfall in Port Republic.

How many hours of daylight does Port Republic have in September?

In Port Republic, New Jersey, the average length of the day in September is 12.4h.

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

The average sunshine in September is 9.2h.

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

In Port Republic, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in September - Port Republic, NJ
  • Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in September: 65.3°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

Average pressure in September - Port Republic, NJ
  • Average pressure in September: 30.04"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.94").

Average wind speed in September - Port Republic, NJ
  • Average wind speed in September: 9.2mph

The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is August (8mph).

Average humidity in September - Port Republic, NJ
  • Average humidity in September: 77%

Months with the highest relative humidity are May and June (80%).
Months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in September - Port Republic, NJ
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in September - Port Republic, NJ
  • Average rainfall days in September: 6.1 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in September - Port Republic, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.2").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September - Port Republic, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.9 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Port Republic, NJ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.9h).

Average sunshine days in September - Port Republic, NJ
  • Average sunshine days in September: 21.7 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is August (18.2 days).

Average UV index in September - Port Republic, NJ
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September - Port Republic, NJ
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 47).
Months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in September - Port Republic, NJ
  • Average visibility in September: 6mi

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