July weather forecast
Riverdale, NJ

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Weather in July

July, the same as June, is another warm summer month in Riverdale, New Jersey, with an average temperature varying between 68.7°F (20.4°C) and 84.2°F (29°C).

Temperature

The warmest time of the year is July, with temperatures averaging a high of 84.2°F (29°C) and a low of 68.7°F (20.4°C).

Heat index

For July, the heat index is appraised at a tropical 91.4°F (33°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In July, the average relative humidity in Riverdale is 70%.

Rainfall

July is the month with the most rainfall. Rain falls for 11.3 days and accumulates 0.98" (25mm) of precipitation.

Snowfall

May through November are months without snowfall in Riverdale.

Daylight

In Riverdale, the average length of the day in July is 14h and 47min.
On the first day of July in Riverdale, sunrise is at 5:29 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:14 pm EDT.

Sunshine

With an average of 10.5h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 6 in July suggests the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest in Riverdale?

July, characterized by an average high temperature of 84.2°F (29°C) and a low temperature of 68.7°F (20.4°C), is generally the warmest month.

Is it hot in Riverdale during July?

July temperatures in Riverdale vary between a high-temperature of 84.2°F (29°C) and a low-temperature of 68.7°F (20.4°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 91.4°F (33°C).

What is the average humidity in July in Riverdale?

In July, the average relative humidity in Riverdale, New Jersey, is 70%.

What is the wettest month in Riverdale?

July is the month with the most rainfall in Riverdale, New Jersey. Rain falls for 11.3 days and accumulates 0.98" (25mm) of precipitation.

How many days does it rain in July in Riverdale?

In July, the rain falls for 11.3 days. Throughout July, 0.98" (25mm) of precipitation is accumulated.

When it does not snow in Riverdale?

In Riverdale, New Jersey, snow does not fall in May through November.

What is the average length of the day in July in Riverdale?

In Riverdale, the average day length in July is 14h and 47min.

When is the sunrise / sunset in July in Riverdale?

In July, on the first day of the month, sunrise is at 5:29 am and sunset at 8:33 pm. On the last day of the month, in Riverdale, New Jersey, sunrise is at 5:53 am and sunset at 8:14 pm EDT.

What month has the most sunshine in Riverdale?

The month with the most sunshine in Riverdale is July, with an average of 10.5h of sunshine.

How many hours of sunshine does Riverdale have in July?

In July, the average sunshine duration is 10.5h.

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

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

What is the UV index reading in July in Riverdale?

In Riverdale, New Jersey, the average daily maximum UV index in July is 6. A UV Index reading 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 July
Riverdale, NJ

Average temperature in July - Riverdale, NJ
  • Average high temperature in July: 84.2°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 (35.8°F).

  • Average low temperature in July: 68.7°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in July
Riverdale, NJ

Average pressure in July - Riverdale, NJ
  • Average pressure in July: 29.96"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 July
Riverdale, NJ

Average wind speed in July - Riverdale, NJ
  • Average wind speed in July: 6.1mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

Average humidity in July
Riverdale, NJ

Average humidity in July - Riverdale, NJ
  • Average humidity in July: 70%

The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (69%).

Average rainfall in July
Riverdale, NJ

Average rainfall in July - Riverdale, NJ
  • Average rainfall in July: 0.98"

The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.39").

Average rainfall days in July
Riverdale, NJ

Average rainfall days in July - Riverdale, NJ
  • Average rainfall days in July: 11.3 days

The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (5.4 days).

Average snowfall in July
Riverdale, NJ

Average snowfall in July - Riverdale, NJ
  • Average snowfall in July: 0"

The month with the highest snowfall is December (0.35").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in July
Riverdale, NJ

Average snowfall days in July - Riverdale, NJ
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Riverdale, NJ

Average daylight in July / Average sunshine in July - Riverdale, NJ
  • Average daylight in July: 14h 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 July: 10h and 3min

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 July
Riverdale, NJ

Average sunshine days in July - Riverdale, NJ
  • Average sunshine days in July: 16.4 days

The month with the most sunshine days is January (22.5 days).
The months with the least sunshine days are May and June (15.9 days).

Average UV index in July
Riverdale, NJ

Average UV index in July - Riverdale, NJ
  • Average UV index in July: 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 July
Riverdale, NJ

Average cloud cover in July - Riverdale, NJ
  • Average cloud cover in July: 32

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in July
Riverdale, NJ

Average visibility in July - Riverdale, NJ
  • Average visibility in July: 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).

Riverdale, New Jersey, USA

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