September weather forecast and climate
Oak Ridge, NJ

The first month of the autumn, September, is still a warm month in Oak Ridge, New Jersey, with temperature in the range of an average high of 73.6°F (23.1°C) and an average low of 54.7°F (12.6°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 80.2°F (26.8°C) in August, to a still warm 73.6°F (23.1°C). The average low-temperature, in September, is 54.7°F (12.6°C).

Humidity

In September, the average relative humidity in Oak Ridge, New Jersey, is 80%.

Rainfall

In Oak Ridge, in September, it is raining for 12.1 days, with typically 0.79" (20mm) of accumulated precipitation. In Oak Ridge, during the entire year, the rain falls for 133 days and collects up to 14.02" (356mm) of precipitation.

Snowfall

In Oak Ridge snow does not fall in June through September.

Daylight

In Oak Ridge, New Jersey, the average length of the day is 12.4h.

Sunshine

In Oak Ridge, the average sunshine in September is 8.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 4 in September 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Oak Ridge?

In Oak Ridge, in September, the average high-temperature is 73.6°F (23.1°C), and the average low-temperature is 54.7°F (12.6°C).

What is the average humidity in September in Oak Ridge?

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

How many days does it rain in September in Oak Ridge?

In September, the rain falls for 12.1 days. Throughout September, 0.79" (20mm) of precipitation is accumulated.

Does it snow in Oak Ridge in September?

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

When it does not snow in Oak Ridge?

June through September are months without snowfall.

What is the average length of the day in September in Oak Ridge?

The average length of the day in September is 12.4h.

How long on average sun shines in September in Oak Ridge?

In Oak Ridge, New Jersey, the average sunshine in September is 8.2h.

What is the UV index intensity in September in Oak Ridge?

In Oak Ridge, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Oak Ridge, NJ
  • Average high temperature in September: 23.1°C

The warmest month (with the highest average high temperature) is July (28°C).
The month with the lowest average high temperature is January (0.7°C).

  • Average low temperature in September: 12.6°C

The month with the highest average low temperature is July (17.1°C).
The coldest month (with the lowest average low temperature) is January (-6.4°C).

Average pressure in September - Oak Ridge, NJ
  • Average pressure in September: 1017.8mbar

The month with the highest atmospheric pressure is November (1019.5mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in September - Oak Ridge, NJ
  • Average wind speed in September: 8.8km/h

The windiest month (with the highest average wind speed) is March (13km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).

Average humidity in September - Oak Ridge, NJ
  • Average humidity in September: 80%

The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September - Oak Ridge, NJ
  • Average rainfall in September: 20mm

The wettest month (with the highest rainfall) is July (47mm).
The driest month (with the least rainfall) is January (18mm).

Average rainfall days in September - Oak Ridge, NJ
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in September - Oak Ridge, NJ
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (38mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - Oak Ridge, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Oak Ridge, NJ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.2h

The month with the most sunshine is July (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 4.1h).

Average sunshine days in September - Oak Ridge, NJ
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.1 days).

Average UV index in September - Oak Ridge, NJ
  • 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 - Oak Ridge, NJ
  • Average cloud cover in September: 43

Months with the most cloud cover are February and March (Cloud cover 53).
Months with the least cloud cover are July and August (Cloud cover 38).

Average visibility in September - Oak Ridge, NJ
  • Average visibility in September: 8km

The month with the highest visibility is April (9km).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (8km).