July weather forecast
Riverdale Park, MD

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Weather in July

July is a tropical summer month in Riverdale Park, Maryland, with an average temperature ranging between max 87.4°F (30.8°C) and min 70°F (21.1°C).

Temperature

July stands out as Riverdale Park's warmest month, with an average high-temperature of 87.4°F (30.8°C) and a low-temperature of 70°F (21.1°C).

Heat index

The average heat index in July is computed to be a torrid 98.6°F (37°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

April and July, with an average relative humidity of 71%, are the least humid months in Riverdale Park.

Rainfall

In Riverdale Park, in July, it is raining for 16.8 days, with typically 3.11" (79mm) of accumulated precipitation. In Riverdale Park, during the entire year, the rain falls for 157.9 days and collects up to 31.14" (791mm) of precipitation.

Snowfall

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

Daylight

In Riverdale Park, the average length of the day in July is 14h and 35min.
On the first day of July in Riverdale Park, sunrise is at 5:46 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:19 pm EDT.

Sunshine

The month with the most sunshine in Riverdale Park, Maryland, is July, with an average of 10.9h of sunshine.

UV index

The months with the highest UV index in Riverdale Park are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In July, the maximum UV index of 6 translates into these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the warmest month in Riverdale Park?

Riverdale Park's warmest month, July, generally records average temperatures ranging from a high of 87.4°F (30.8°C) to a low of 70°F (21.1°C).

How hot does it get in Riverdale Park in July?

In July, in Riverdale Park, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 70°F (21.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is computed to be 98.6°F (37°C).

What are the least humid months in Riverdale Park?

April and July, with an average relative humidity of 71%, are the least humid months in Riverdale Park, Maryland.

What is the average humidity in July in Riverdale Park?

In Riverdale Park, the average relative humidity in July is 71%.

How many days does it rain in July in Riverdale Park?

In July, in Riverdale Park, Maryland, the rain falls for 16.8 days. Throughout July, 3.11" (79mm) of precipitation is accumulated.

When it does not snow in Riverdale Park?

May through November are months without snowfall in Riverdale Park.

How many hours of daylight does Riverdale Park have in July?

The average day length in July in Riverdale Park, Maryland, is 14h and 35min.

When are sunrise and sunset in July in Riverdale Park?

In July, on the first day of the month, sunrise is at 5:46 am and sunset at 8:37 pm. On the last day of the month, in Riverdale Park, sunrise is at 6:08 am and sunset at 8:19 pm EDT.

What month has the most sunshine in Riverdale Park?

The month with the most sunshine in Riverdale Park, Maryland, is July, with an average of 10.9h of sunshine.

How long on average sun shines in July in Riverdale Park?

In July, the average sunshine duration is 10.9h.

When is the highest UV index in Riverdale Park?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Riverdale Park, Maryland.

What is the UV index intensity in July in Riverdale Park?

In Riverdale Park, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
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 Park, MD

Average temperature in July - Riverdale Park, MD
  • Average high temperature in July: 87.4°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in July: 70°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in July
Riverdale Park, MD

Average pressure in July - Riverdale Park, MD
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in July
Riverdale Park, MD

Average wind speed in July - Riverdale Park, MD
  • Average wind speed in July: 5.4mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in July
Riverdale Park, MD

Average humidity in July - Riverdale Park, MD
  • Average humidity in July: 71%

The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).

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Average rainfall in July
Riverdale Park, MD

Average rainfall in July - Riverdale Park, MD
  • Average rainfall in July: 3.11"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").

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Average rainfall days in July
Riverdale Park, MD

Average rainfall days in July - Riverdale Park, MD
  • Average rainfall days in July: 16.8 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in July
Riverdale Park, MD

Average snowfall in July - Riverdale Park, MD
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in July
Riverdale Park, MD

Average snowfall days in July - Riverdale Park, MD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Riverdale Park, MD

Average daylight in July / Average sunshine in July - Riverdale Park, MD
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in July
Riverdale Park, MD

Average sunshine days in July - Riverdale Park, MD
  • Average sunshine days in July: 12 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in July
Riverdale Park, MD

Average UV index in July - Riverdale Park, MD
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in July
Riverdale Park, MD

Average cloud cover in July - Riverdale Park, MD
  • Average cloud cover in July: 29

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in July
Riverdale Park, MD

Average visibility in July - Riverdale Park, MD
  • 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).

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Riverdale Park, Maryland, USA

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