August weather forecast
Riverdale Gardens, MD

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Weather in August

August, the last month of the summer in Riverdale Gardens, is also a moderately hot month, with an average temperature fluctuating between 68.7°F (20.4°C) and 85.1°F (29.5°C).

Temperature

As July transitions into August, Riverdale Gardens records an average high-temperature of a warm 85.1°F (29.5°C), showing a gentle shift from the preceding month. In the month of August, Riverdale Gardens witnesses a consistent average low-temperature of 68.7°F (20.4°C).

Heat index

The heat index value for August is estimated at a tropical 93.2°F (34°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In Riverdale Gardens, the average relative humidity in August is 72%.

Rainfall

August is the month with the most rainfall in Riverdale Gardens. Rain falls for 15.8 days and accumulates 3.58" (91mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Riverdale Gardens is 13h and 38min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:18 pm. On the last day of August, in Riverdale Gardens, sunrise is at 6:36 am and sunset at 7:39 pm EDT.

Sunshine

In August, the average sunshine in Riverdale Gardens, Maryland, is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Riverdale Gardens. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In August, an average UV index of 6 transforms into the following instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

Is it hot in Riverdale Gardens during August?

Riverdale Gardens in August has an average high-temperature of 85.1°F (29.5°C) and an average low-temperature of 68.7°F (20.4°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is estimated at 93.2°F (34°C).

What is the average humidity in August in Riverdale Gardens?

In Riverdale Gardens, the average relative humidity in August is 72%.

What is the rainiest month in Riverdale Gardens?

The month with the most rainfall is August, when the rain falls for 15.8 days and typically aggregates up to 3.58" (91mm) of precipitation.

How much does it rain in Riverdale Gardens in August?

In Riverdale Gardens, Maryland, during August, the rain falls for 15.8 days and regularly aggregates up to 3.58" (91mm) of precipitation.

When it does not snow in Riverdale Gardens?

May through November are months without snowfall in Riverdale Gardens.

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

In Riverdale Gardens, the average day length in August is 13h and 38min.

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

In August, on the first day of the month, sunrise is at 6:09 am and sunset at 8:18 pm. On the last day of the month, in Riverdale Gardens, Maryland, sunrise is at 6:36 am and sunset at 7:39 pm EDT.

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

In August, the average sunshine duration is 10.3h.

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

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

What is the UV index reading in August in Riverdale Gardens?

In August, the average daily maximum UV index in Riverdale Gardens, Maryland, is 6. A UV Index of 6 to 7 symbolizes 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
Riverdale Gardens, MD

Average temperature in August - Riverdale Gardens, MD
  • Average high temperature in August: 85.1°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 August: 68.7°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 August
Riverdale Gardens, MD

Average pressure in August - Riverdale Gardens, MD
  • Average pressure in August: 29.99"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 August
Riverdale Gardens, MD

Average wind speed in August - Riverdale Gardens, MD
  • Average wind speed in August: 5.3mph

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 August
Riverdale Gardens, MD

Average humidity in August - Riverdale Gardens, MD
  • Average humidity in August: 72%

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 August
Riverdale Gardens, MD

Average rainfall in August - Riverdale Gardens, MD
  • Average rainfall in August: 3.58"

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 August
Riverdale Gardens, MD

Average rainfall days in August - Riverdale Gardens, MD
  • Average rainfall days in August: 15.8 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 August
Riverdale Gardens, MD

Average snowfall in August - Riverdale Gardens, MD
  • Average snowfall in August: 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 August
Riverdale Gardens, MD

Average snowfall days in August - Riverdale Gardens, MD
  • Average snowfall days in August: 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 August /
Average sunshine in August
Riverdale Gardens, MD

Average daylight in August / Average sunshine in August - Riverdale Gardens, MD
  • Average daylight in August: 13h 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 August: 10h and 2min

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 August
Riverdale Gardens, MD

Average sunshine days in August - Riverdale Gardens, MD
  • Average sunshine days in August: 12.8 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 August
Riverdale Gardens, MD

Average UV index in August - Riverdale Gardens, MD
  • Average UV index in August: 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 August
Riverdale Gardens, MD

Average cloud cover in August - Riverdale Gardens, MD
  • Average cloud cover in August: 31

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 August
Riverdale Gardens, MD

Average visibility in August - Riverdale Gardens, MD
  • 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).

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Riverdale Gardens, Maryland, USA

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