August weather forecast and climate
Pennington, NJ

The last month of the summer, August, is also a moderately hot month in Pennington, New Jersey, with average temperature fluctuating between 65.8°F (18.8°C) and 82.9°F (28.3°C).

Temperature

In Pennington, New Jersey, the average high-temperature is relatively the same as in July - a still warm 82.9°F (28.3°C). The average low-temperature, in Pennington, is 65.8°F (18.8°C).

Heat index

In August, the average heat index is estimated at a tropical 89.4°F (31.9°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. Exposure to direct sunshine can increase heat index values 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 a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, wind, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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

The average relative humidity in Pennington is 74%.

Rainfall

In August, the rain falls for 13.5 days. Throughout August, 1.85" (47mm) of precipitation is accumulated. In Pennington, during the entire year, the rain falls for 138.1 days and collects up to 16.5" (419mm) of precipitation.

Snowfall

In Pennington snow does not fall in June through October.

Daylight

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

Sunshine

In August, the average sunshine is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Pennington, New Jersey. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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 August in Pennington?

In Pennington, New Jersey, in August, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, in August is appraised at 89.4°F (31.9°C).

What is the average humidity in August in Pennington?

The average relative humidity in August in Pennington, New Jersey, is 74%.

How many days does it rain in August in Pennington?

In Pennington, in August, it is raining for 13.5 days, with typically 1.85" (47mm) of accumulated precipitation.

When it does not snow in Pennington?

In Pennington snow does not fall in June through October.

What is the average length of the day in August in Pennington?

In August, the average length of the day in Pennington, New Jersey, is 13.7h.

How many hours of sunshine does Pennington have in August?

The average sunshine in August in Pennington, New Jersey, is 10.2h.

When is the highest UV index in Pennington?

Months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Pennington?

In August, the average daily maximum UV index in Pennington is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in August - Pennington, NJ
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in August - Pennington, NJ
  • Average pressure in August: 29.98"

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

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

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August - Pennington, NJ
  • Average humidity in August: 74%

Months with the highest relative humidity are February, October and December (78%).
Months with the lowest relative humidity are April and July (73%).

Average rainfall in August - Pennington, NJ
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in August - Pennington, NJ
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (7.2 days).

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

The month with the highest snowfall is February (0.71").
Months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August - Pennington, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Pennington, NJ
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in August: 10.2h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in August - Pennington, NJ
  • Average sunshine days in August: 14.9 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in August - Pennington, NJ
  • Average UV index in August: 6

Months with the highest UV index are May, 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 - Pennington, NJ
  • Average cloud cover in August: 33

Months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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

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).