August weather forecast and climate
Cedar Grove, NJ

August, the last month of the summer, in Cedar Grove, is another warm month, with average temperature varying between 81.9°F (27.7°C) and 66.6°F (19.2°C).

Temperature

In Cedar Grove, the average high-temperature is almost the same as in July - a still warm 81.9°F (27.7°C). In Cedar Grove, the average low-temperature is 66.6°F (19.2°C).

Heat index

In August, the average heat index is calculated to a tropical 86.5°F (30.3°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, wind, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

Months with the lowest humidity in Cedar Grove are April and August, with an average relative humidity of 72%.

Rainfall

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

Snowfall

May through October are months without snowfall in Cedar Grove, New Jersey.

Daylight

In August, the average length of the day is 13.7h.

Sunshine

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

UV index

Months with the highest UV index in Cedar Grove, New Jersey, are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 August in Cedar Grove?

In August, in Cedar Grove, New Jersey, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 66.6°F (19.2°C). The average heat index (a.k.a. 'feels like', 'real feel'), that represents influence of the relative humidity to air temperaure, in August is calculated to 86.5°F (30.3°C).

What is the least humid month in Cedar Grove?

Months with the lowest humidity in Cedar Grove, New Jersey, are April and August, with an average relative humidity of 72%.

What is the average humidity in August in Cedar Grove?

In Cedar Grove, the average relative humidity in August is 72%.

How much does it rain in Cedar Grove in August?

In August, the rain falls for 16.3 days. Throughout August, 2.6" (66mm) of precipitation is accumulated.

When it does not snow in Cedar Grove?

May through October are months without snowfall.

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

In Cedar Grove, the average length of the day in August is 13.7h.

How long on average sun shines in August in Cedar Grove?

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

When is 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.

How high is the UV index in August in Cedar Grove?

In Cedar Grove, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.
Average temperature in August - Cedar Grove, NJ
  • Average high temperature in August: 27.7°C

The warmest month (with the highest average high temperature) is July (29°C).
The month with the lowest average high temperature is January (1.8°C).

  • Average low temperature in August: 19.2°C

The month with the highest average low temperature is July (19.8°C).
The coldest month (with the lowest average low temperature) is January (-4.5°C).

Average pressure in August - Cedar Grove, NJ
  • Average pressure in August: 1015.4mbar

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 August - Cedar Grove, NJ
  • Average wind speed in August: 9.3km/h

The windiest months (with the highest average wind speed) are January and March (14.1km/h).
The calmest month (with the lowest average wind speed) is July (9.2km/h).

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

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

Average rainfall in August - Cedar Grove, NJ
  • Average rainfall in August: 66mm

The wettest month (with the highest rainfall) is July (78mm).
The driest month (with the least rainfall) is January (35mm).

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: 0mm

The month with the highest snowfall is March (83mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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).
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: 13.7h

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 August: 10.3h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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: 6

Months with the highest UV index are June, July and August (UV index 6).
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: 31

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: 9km

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