July weather forecast
Riverdale Gardens, MD

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Weather in July

July is a hot summer month in Riverdale Gardens, Maryland, with an average temperature fluctuating between 87.4°F (30.8°C) and 70°F (21.1°C).

Temperature

July is the warmest month of the year, registering average temperatures as high as 87.4°F (30.8°C) and as low as 70°F (21.1°C).

Heat index

For most parts of July, the heat index is estimated at a sweltering 98.6°F (37°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The months with the lowest humidity in Riverdale Gardens are April and July, with an average relative humidity of 71%.

Rainfall

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

Snowfall

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

Daylight

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

Sunshine

July has the most sunshine of the year in Riverdale Gardens, Maryland, with an average of 10.9h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In July, a daily UV index of 6 turns into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

What is the hottest time of year in Riverdale Gardens?

Riverdale Gardens witnesses the warmest weather in July, with temperatures averaging a high of 87.4°F (30.8°C) and a low of 70°F (21.1°C).

Is it hot in Riverdale Gardens during July?

During July, Riverdale Gardens experiences an average high-temperature of 87.4°F (30.8°C) and a low-temperature of 70°F (21.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in July is estimated at 98.6°F (37°C).

What are the least humid months in Riverdale Gardens?

The months with the lowest humidity are April and July, with an average relative humidity of 71%.

What is the average humidity in July in Riverdale Gardens?

The average relative humidity in July in Riverdale Gardens is 71%.

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

In Riverdale Gardens, during July, the rain falls for 16.8 days and regularly aggregates up to 3.11" (79mm) of precipitation.

When it does not snow in Riverdale Gardens?

May through November are months without snowfall.

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

In Riverdale Gardens, Maryland, the average day length in July is 14h and 35min.

When is the sunrise / sunset in July in Riverdale Gardens?

On the first day of July, 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.

What month has the most sunshine in Riverdale Gardens?

July has the most sunshine of the year, with an average of 10.9h of sunshine.

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

In Riverdale Gardens, Maryland, the average sunshine duration in July is 10.9h.

What is the month with the highest UV index in Riverdale Gardens?

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

How high is the UV index in July in Riverdale Gardens?

The average daily maximum UV index in July in Riverdale Gardens, Maryland, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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 Gardens, MD

Average temperature in July - Riverdale Gardens, 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 Gardens, MD

Average pressure in July - Riverdale Gardens, 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 Gardens, MD

Average wind speed in July - Riverdale Gardens, 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 Gardens, MD

Average humidity in July - Riverdale Gardens, 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 Gardens, MD

Average rainfall in July - Riverdale Gardens, 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 Gardens, MD

Average rainfall days in July - Riverdale Gardens, 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 Gardens, MD

Average snowfall in July - Riverdale Gardens, 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 Gardens, MD

Average snowfall days in July - Riverdale Gardens, 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 Gardens, MD

Average daylight in July / Average sunshine in July - Riverdale Gardens, 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 Gardens, MD

Average sunshine days in July - Riverdale Gardens, 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 Gardens, MD

Average UV index in July - Riverdale Gardens, 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 Gardens, MD

Average cloud cover in July - Riverdale Gardens, 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 Gardens, MD

Average visibility in July - Riverdale Gardens, 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 Gardens, Maryland, USA

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