August weather forecast
Cedar Grove, NJ

Share

Weather in August

The last month of the summer, August, is also a moderately hot month in Cedar Grove, New Jersey, with an average temperature ranging between max 81.9°F (27.7°C) and min 66.6°F (19.2°C).

Temperature

August's beginning signals an average high-temperature of a still moderately hot 81.9°F (27.7°C), barely different from July's 84.2°F (29°C). During August, the temperature tends to dip to an average of 66.6°F (19.2°C) at night.

Heat index

Throughout August, the heat index is evaluated at a tropical 86°F (30°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

The months with the lowest humidity are April and August, with an average relative humidity of 72%.

Rainfall

In August, the rain falls for 16.3 days. Throughout August, 2.6" (66mm) of precipitation is accumulated. Throughout the year, there are 153.3 rainfall days, and 24.92" (633mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Cedar Grove, the average length of the day in August is 13h and 45min.
On the first day of August, sunrise is at 5:54 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:30 pm EDT.

Sunshine

In Cedar Grove, the average sunshine in August is 10.3h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Cedar Grove in August?

In August, in Cedar Grove, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 66.6°F (19.2°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 86°F (30°C).

What is the least humid month in Cedar Grove?

April and August, with an average relative humidity of 72%, are the least humid months.

What is the average humidity in August in Cedar Grove?

The average relative humidity in August in Cedar Grove, New Jersey, is 72%.

How much does it rain in Cedar Grove in August?

In Cedar Grove, New Jersey, during August, the rain falls for 16.3 days and regularly aggregates up to 2.6" (66mm) of precipitation.

When it does not snow in Cedar Grove?

In Cedar Grove, snow does not fall in May through October.

What is the average length of the day in August in Cedar Grove?

In August, the average day length is 13h and 45min.

When are sunrise and sunset in August in Cedar Grove?

On the first day of August, sunrise is at 5:54 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:30 pm EDT.

How many hours of sunshine does Cedar Grove have in August?

The average sunshine duration in August in Cedar Grove is 10.3h.

What is the month with the highest UV index in Cedar Grove?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Cedar Grove, New Jersey.

What is the UV index reading in August in Cedar Grove?

In Cedar Grove, New Jersey, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe 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 August
Cedar Grove, NJ

Average temperature in August - Cedar Grove, NJ
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in August: 66.6°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in August
Cedar Grove, NJ

Average pressure in August - Cedar Grove, NJ
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Cedar Grove, NJ

Average wind speed in August - Cedar Grove, NJ
  • Average wind speed in August: 5.8mph

The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in August
Cedar Grove, NJ

Average humidity in August - Cedar Grove, NJ
  • Average humidity in August: 72%

The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are April and August (72%).

Average rainfall in August
Cedar Grove, NJ

Average rainfall in August - Cedar Grove, NJ
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in August
Cedar Grove, NJ

Average rainfall days in August - Cedar Grove, NJ
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.6 days).

Average snowfall in August
Cedar Grove, NJ

Average snowfall in August - Cedar Grove, NJ
  • Average snowfall in August: 0"

The month with the highest snowfall is March (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Cedar Grove, NJ

Average snowfall days in August - Cedar Grove, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Cedar Grove, NJ

Average daylight in August / Average sunshine in August - Cedar Grove, NJ
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in August
Cedar Grove, NJ

Average sunshine days in August - Cedar Grove, NJ
  • Average sunshine days in August: 11.8 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in August
Cedar Grove, NJ

Average UV index in August - Cedar Grove, NJ
  • Average UV index in August: 6

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

Average cloud cover in August
Cedar Grove, NJ

Average cloud cover in August - Cedar Grove, NJ
  • Average cloud cover in August: 31

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in August
Cedar Grove, NJ

Average visibility in August - Cedar Grove, NJ
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Cedar Grove, New Jersey, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location