August weather forecast
Runnymeade Summit, MD

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Weather in August

The last month of the summer, August, is another warm month in Runnymeade Summit, Maryland, with an average temperature varying between 81.9°F (27.7°C) and 63.1°F (17.3°C).

Temperature

With the onset of August, the average high-temperature registers at a still moderately hot 81.9°F (27.7°C), subtly different from July's 84°F (28.9°C). During the nights in August, Runnymeade Summit observes an average low-temperature of 63.1°F (17.3°C).

Heat index

The heat index in August is computed to be a hot 87.8°F (31°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Records show heat index calculations are tailored for shaded regions and mild winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August is 78%.

Rainfall

The month with the most rainfall is August, when the rain falls for 17 days and typically aggregates up to 3.23" (82mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 41min.
On the first day of August, sunrise is at 6:08 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:40 pm EDT.

Sunshine

In Runnymeade Summit, the average sunshine in August is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

Runnymeade Summit in August has an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August is 78%.

What is the rainiest month?

August is the month with the most rainfall. Rain falls for 17 days and accumulates 3.23" (82mm) of precipitation.

How much does it rain in August?

In Runnymeade Summit, in August, during 17 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall in Runnymeade Summit.

What is the average length of the day in August?

In August, the average day length in Runnymeade Summit is 13h and 41min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:08 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:40 pm EDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.1h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In August, the average daily maximum UV index in Runnymeade Summit 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
Runnymeade Summit, MD

Average temperature in August - Runnymeade Summit, MD
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

Average pressure in August
Runnymeade Summit, MD

Average pressure in August - Runnymeade Summit, MD
  • Average pressure in August: 30"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
Runnymeade Summit, MD

Average wind speed in August - Runnymeade Summit, MD
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in August
Runnymeade Summit, MD

Average humidity in August - Runnymeade Summit, MD
  • Average humidity in August: 78%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (75%).

Average rainfall in August
Runnymeade Summit, MD

Average rainfall in August - Runnymeade Summit, MD
  • Average rainfall in August: 3.23"

The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is February (1.61").

Average rainfall days in August
Runnymeade Summit, MD

Average rainfall days in August - Runnymeade Summit, MD
  • Average rainfall days in August: 17 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.6 days).

Average snowfall in August
Runnymeade Summit, MD

Average snowfall in August - Runnymeade Summit, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Runnymeade Summit, MD

Average snowfall days in August - Runnymeade Summit, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Runnymeade Summit, MD

Average daylight in August / Average sunshine in August - Runnymeade Summit, 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 24min).

  • 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 42min).

Average sunshine days in August
Runnymeade Summit, MD

Average sunshine days in August - Runnymeade Summit, MD
  • Average sunshine days in August: 11.4 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in August
Runnymeade Summit, MD

Average UV index in August - Runnymeade Summit, 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, February, November and December (UV index 2).

Average cloud cover in August
Runnymeade Summit, MD

Average cloud cover in August - Runnymeade Summit, MD
  • Average cloud cover in August: 33

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Runnymeade Summit, MD

Average visibility in August - Runnymeade Summit, MD
  • Average visibility in August: 6mi

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

Runnymeade Summit, Maryland, USA

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