August weather forecast
Silver Spring, MD

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Weather in August

The last month of the summer, August, is another warm month in Silver Spring, Maryland, with an average temperature fluctuating between 85.6°F (29.8°C) and 68.2°F (20.1°C).

Temperature

With the onset of August, a modest change to a moderately hot 85.6°F (29.8°C) from July's 87.4°F (30.8°C) is noted in high-temperature. August's average low-temperature reading settles at an agreeable 68.2°F (20.1°C).

Heat index

August's mean heat index is estimated at a fiery hot 95°F (35°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Silver Spring, the average relative humidity in August is 70%.

Rainfall

August is the month with the most rainfall. Rain falls for 16.3 days and accumulates 3.86" (98mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August in Silver Spring is 13h and 38min.
On the first day of August in Silver Spring, sunrise is at 6:09 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:39 pm EDT.

Sunshine

In August, the average sunshine in Silver Spring is 10.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

The high-temperature, in August, in Silver Spring, is 85.6°F (29.8°C), while the low-temperature averages to 68.2°F (20.1°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 95°F (35°C).

What is the average humidity in August?

In August, the average relative humidity is 70%.

What is the wettest month?

August is the month with the most rainfall. Rain falls for 16.3 days and accumulates 3.86" (98mm) of precipitation.

How many days does it rain in August?

In Silver Spring, in August, it is raining for 16.3 days, with typically 3.86" (98mm) of accumulated precipitation.

When it does not snow?

In Silver Spring, snow does not fall in May through October.

How many hours of daylight does Silver Spring have in August?

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

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:09 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:39 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 10.1h.

What are the months with the highest UV index?

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

What is the UV index intensity in August?

In Silver Spring, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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 August
Silver Spring, MD

Average temperature in August - Silver Spring, MD
  • Average high temperature in August: 85.6°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 (39.7°F).

  • Average low temperature in August: 68.2°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in August
Silver Spring, MD

Average pressure in August - Silver Spring, 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 (29.95"Hg).

Average wind speed in August
Silver Spring, MD

Average wind speed in August - Silver Spring, MD
  • Average wind speed in August: 5.2mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in August
Silver Spring, MD

Average humidity in August - Silver Spring, MD
  • Average humidity in August: 70%

The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).

Average rainfall in August
Silver Spring, MD

Average rainfall in August - Silver Spring, MD
  • Average rainfall in August: 3.86"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").

Average rainfall days in August
Silver Spring, MD

Average rainfall days in August - Silver Spring, MD
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in August
Silver Spring, MD

Average snowfall in August - Silver Spring, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Silver Spring, MD

Average snowfall days in August - Silver Spring, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.6 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
Silver Spring, MD

Average daylight in August / Average sunshine in August - Silver Spring, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in August
Silver Spring, MD

Average sunshine days in August - Silver Spring, MD
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).

Average UV index in August
Silver Spring, MD

Average UV index in August - Silver Spring, 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, November and December (UV index 2).

Average cloud cover in August
Silver Spring, MD

Average cloud cover in August - Silver Spring, MD
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in August
Silver Spring, MD

Average visibility in August - Silver Spring, MD
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Silver Spring, Maryland, USA

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