August weather forecast
Whippany, NJ

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Weather in August

August, the last month of the summer in Whippany, is also a moderately hot month, with an average temperature ranging between min 64°F (17.8°C) and max 81.5°F (27.5°C).

Temperature

The shift into August records an average high-temperature of a still warm 81.5°F (27.5°C), subtly varied from July's 83.7°F (28.7°C). Whippany encounters an average low-temperature of 64°F (17.8°C) during August nights.

Heat index

For August, the heat index is appraised at a hot 86°F (30°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. 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. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In August, in Whippany, New Jersey, the rain falls for 15.5 days. Throughout August, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 157.9 rainfall days, and 27.05" (687mm) of precipitation is accumulated.

Snowfall

In Whippany, snow does not fall in June through October.

Daylight

In August, the average length of the day is 13h and 45min.
On the first day of August, sunrise is at 5:54 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:31 pm EDT.

Sunshine

In August, the average sunshine in Whippany is 10h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

The average high-temperature and low-temperature during August are 81.5°F (27.5°C) and 64°F (17.8°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 86°F (30°C).

What is the average humidity in August?

In August, the average relative humidity is 75%.

How much does it rain in August?

In Whippany, in August, it is raining for 15.5 days, with typically 2.64" (67mm) of accumulated precipitation.

When it does not snow?

June through October are months without snowfall.

What is the average length of the day in August?

The average day length in August is 13h and 45min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:54 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:31 pm EDT.

How many hours of sunshine does Whippany have in August?

In August, the average sunshine duration is 10h.

What is the month with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index reading in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high 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 August
Whippany, NJ

Average temperature in August - Whippany, NJ
  • Average high temperature in August: 81.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in August
Whippany, NJ

Average pressure in August - Whippany, NJ
  • Average pressure in August: 29.99"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
Whippany, NJ

Average wind speed in August - Whippany, NJ
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August
Whippany, NJ

Average humidity in August - Whippany, NJ
  • Average humidity in August: 75%

The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (74%).

Average rainfall in August
Whippany, NJ

Average rainfall in August - Whippany, NJ
  • Average rainfall in August: 2.64"

The wettest month (with the highest rainfall) is July (3.19").
The driest months (with the least rainfall) are January, February and September (1.57").

Average rainfall days in August
Whippany, NJ

Average rainfall days in August - Whippany, NJ
  • Average rainfall days in August: 15.5 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in August
Whippany, NJ

Average snowfall in August - Whippany, NJ
  • Average snowfall in August: 0"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Whippany, NJ

Average snowfall days in August - Whippany, 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 June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Whippany, NJ

Average daylight in August / Average sunshine in August - Whippany, 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 0min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in August
Whippany, NJ

Average sunshine days in August - Whippany, NJ
  • Average sunshine days in August: 12.8 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in August
Whippany, NJ

Average UV index in August - Whippany, 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
Whippany, NJ

Average cloud cover in August - Whippany, NJ
  • Average cloud cover in August: 34

The months with the most cloud cover are February, March and December (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in August
Whippany, NJ

Average visibility in August - Whippany, NJ
  • Average visibility in August: 6mi

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

Whippany, New Jersey, USA

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