August weather forecast
Hillside, NJ

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Weather in August

August, the last month of the summer in Hillside, is another warm month, with an average temperature fluctuating between 80.6°F (27°C) and 70.2°F (21.2°C).

Temperature

The advent of August brings an average high-temperature of a still warm 80.6°F (27°C), almost identical to the preceding month. August's nights in Hillside, New Jersey, observe an average temperature of 70.2°F (21.2°C).

Heat index

The heat index in August is estimated at 84.2°F (29°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

The months with the lowest humidity in Hillside are August and November, with an average relative humidity of 71%.

Rainfall

In Hillside, New Jersey, in August, it is raining for 16.8 days, with typically 3.7" (94mm) of accumulated precipitation. Throughout the year, there are 155.6 rainfall days, and 34.72" (882mm) of precipitation is accumulated.

Snowfall

In Hillside, snow does not fall in May through October.

Daylight

In Hillside, New Jersey, the average length of the day in August is 13h and 44min.
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 August, the average sunshine in Hillside is 10.6h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Hillside in August?

The high-temperature in Hillside during August is 80.6°F (27°C) and the low-temperature is 70.2°F (21.2°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 84.2°F (29°C).

What are the least humid months in Hillside?

The months with the lowest humidity in Hillside, New Jersey, are August and November, with an average relative humidity of 71%.

What is the average humidity in August in Hillside?

The average relative humidity in August in Hillside, New Jersey, is 71%.

How many days does it rain in August in Hillside?

In Hillside, New Jersey, in August, during 16.8 rainfall days, 3.7" (94mm) of precipitation is typically accumulated.

When it does not snow in Hillside?

In Hillside, snow does not fall in May through October.

How many hours of daylight does Hillside have in August?

In Hillside, the average day length in August is 13h and 44min.

When are sunrise and sunset in August in Hillside?

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

How long on average sun shines in August in Hillside?

The average sunshine duration in August in Hillside is 10.6h.

What are the months with the highest UV index in Hillside?

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

What is the UV index reading in August in Hillside?

In August, the average daily maximum UV index in Hillside, New Jersey, is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Hillside, NJ

Average temperature in August - Hillside, NJ
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in August: 70.2°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

Average pressure in August
Hillside, NJ

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

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Hillside, NJ

Average wind speed in August - Hillside, NJ
  • Average wind speed in August: 7.5mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in August
Hillside, NJ

Average humidity in August - Hillside, NJ
  • Average humidity in August: 71%

The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).

Average rainfall in August
Hillside, NJ

Average rainfall in August - Hillside, NJ
  • Average rainfall in August: 3.7"

The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in August
Hillside, NJ

Average rainfall days in August - Hillside, NJ
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in August
Hillside, NJ

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

The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Hillside, NJ

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

The month with the highest number of snowfall days is January (4.5 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
Hillside, NJ

Average daylight in August / Average sunshine in August - Hillside, NJ
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in August
Hillside, NJ

Average sunshine days in August - Hillside, NJ
  • Average sunshine days in August: 12.2 days

The months with the most sunshine days are January and November (19.7 days).
The month with the least sunshine days is July (11 days).

Average UV index in August
Hillside, NJ

Average UV index in August - Hillside, 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
Hillside, NJ

Average cloud cover in August - Hillside, NJ
  • Average cloud cover in August: 28

The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in August
Hillside, NJ

Average visibility in August - Hillside, NJ
  • Average visibility in August: 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).

Hillside, New Jersey, USA

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