September weather forecast
River Edge, MD

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Weather in September

September, the first month of the autumn in River Edge, is still a warm month, with an average temperature fluctuating between 77.2°F (25.1°C) and 61.7°F (16.5°C).

Temperature

Transition into September subtly marks a drop in the average high-temperature, moderately moving from a warm 82.9°F (28.3°C) in August to a still moderately hot 77.2°F (25.1°C). In the month of September, River Edge records a consistent average low-temperature of 61.7°F (16.5°C).

Humidity

The average relative humidity in September is 77%.

Rainfall

The month with the least rainfall is September, when the rain falls for 8.5 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In River Edge, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:47 pm EDT.

Sunshine

In River Edge, the average sunshine in September is 9.3h.

UV index

In September, the average daily maximum UV index in River Edge is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

An average high-temperature, in September, in River Edge, is 77.2°F (25.1°C) and the average low-temperature is 61.7°F (16.5°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 91.4°F (33°C).

What is the average humidity in September?

In River Edge, the average relative humidity in September is 77%.

What is the driest month in River Edge?

The month with the least rainfall is September, when the rain falls for 8.5 days and typically collects 0.43" (11mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 8.5 days. Throughout September, 0.43" (11mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

In River Edge, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm EDT.

How long on average sun shines in September?

In River Edge, the average sunshine duration in September is 9.3h.

How high is the UV index in September?

The average daily maximum UV index in September in River Edge is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
River Edge, MD

Average temperature in September - River Edge, MD
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure in September
River Edge, MD

Average pressure in September - River Edge, MD
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
River Edge, MD

Average wind speed in September - River Edge, MD
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in September
River Edge, MD

Average humidity in September - River Edge, MD
  • Average humidity in September: 77%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in September
River Edge, MD

Average rainfall in September - River Edge, MD
  • Average rainfall in September: 0.43"

The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in September
River Edge, MD

Average rainfall days in September - River Edge, MD
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).

Average snowfall in September
River Edge, MD

Average snowfall in September - River Edge, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
River Edge, MD

Average snowfall days in September - River Edge, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
River Edge, MD

Average daylight in September / Average sunshine in September - River Edge, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in September
River Edge, MD

Average sunshine days in September - River Edge, MD
  • Average sunshine days in September: 19.6 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).

Average UV index in September
River Edge, MD

Average UV index in September - River Edge, MD
  • Average UV index in September: 5

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

Average cloud cover in September
River Edge, MD

Average cloud cover in September - River Edge, MD
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September
River Edge, MD

Average visibility in September - River Edge, MD
  • Average visibility in September: 6mi

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

River Edge, Maryland, USA

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