August weather - Summer 2024

Weather in August
Frequently asked questions
Average temperature in August
Average pressure in August
Average wind speed in August
Average humidity in August
Average rainfall in August
Average rainfall days in August
Average snowfall in August
Average snowfall days in August
Average daylight in August
Average sunshine in August
Average sunshine days in August
Average UV index in August
Average cloud cover in August
Average visibility in August

A stone bridge over the calm Carroll Creek in the Carroll Creek Linear Park in Frederick, Maryland

Weather in August

The heat continues to swell in August, with only a slight dip in temperature from its July peak. Nevertheless, 83.5°F (28.6°C) is the threshold in Frederick, making August the second warmest month of the year. Still within the grip of summer's splendor, outdoor activities continue to thrive, facilitated by the extended daylight hours. The decrease in rainfall from July promises drier, sunny days, providing the perfect ambiance for alfresco dining. However, the pressure starts to rise, nudging towards cooler, forthcoming months.

Temperature

August's advent in Frederick denotes a minor fluctuation in the average high-temperature to a still moderately hot 83.5°F (28.6°C) from July's 85.6°F (29.8°C). Frederick sees an average low-temperature of 63.5°F (17.5°C) during August.

Heat index

In August, the average heat index is computed to be a hot 91.4°F (33°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in August is 77%.

Rainfall

In August, the rain falls for 16.3 days. Throughout August, 3.43" (87mm) of precipitation is accumulated. Throughout the year, in Frederick, Maryland, there are 159.7 rainfall days, and 30.04" (763mm) of precipitation is accumulated.

Snowfall

In Frederick, snow does not fall in June through October.

Daylight

In August, the average length of the day is 13h and 40min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:21 pm. On the last day of August, in Frederick, Maryland, sunrise is at 6:37 am and sunset at 7:41 pm EDT.

Sunshine

In August, the average sunshine in Frederick 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 value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Guard oneself from overexposure. Defence against sun injury is vital. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

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Frequently asked questions

How hot is it in Frederick in August?

The high-temperature during August is 83.5°F (28.6°C) and the low-temperature is 63.5°F (17.5°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is computed to be 91.4°F (33°C).

What is the average humidity in August in Frederick?

In August, the average relative humidity in Frederick, Maryland, is 77%.

How many days does it rain in August in Frederick?

In Frederick, Maryland, in August, it is raining for 16.3 days, with typically 3.43" (87mm) of accumulated precipitation.

When it does not snow in Frederick?

In Frederick, Maryland, snow does not fall in June through October.

How many hours of daylight does Frederick have in August?

In August, the average day length in Frederick, Maryland, is 13h and 40min.

What time are sunrise and sunset in August in Frederick?

In August, on the first day of the month, sunrise is at 6:10 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:41 pm EDT.

How long on average sun shines in August in Frederick?

In Frederick, Maryland, the average sunshine duration in August is 10.1h.

What are the months with the highest UV index in Frederick?

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

How high is the UV index in August in Frederick?

In August, the average daily maximum UV index in Frederick, Maryland, is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J August S O N D

Jul

August

Sep

Average high temperature

85.6°F 29.8°C

83.5°F 28.6°C

76.3°F 24.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.2mph 8.4km/h

5.5mph 8.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

14.2

Average UV index

Average cloud cover

Average visibility

Average temperature in August
Frederick, MD

Average high temperature in August: 83.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.6°F).

Average low temperature in August: 63.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

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Average pressure in August
Frederick, 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).

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Average wind speed in August
Frederick, MD

Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average humidity in August
Frederick, MD

Average humidity in August: 77%

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

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Average rainfall in August
Frederick, MD

Average rainfall in August: 3.43"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in August
Frederick, MD

Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (8.7 days).

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Average snowfall in August
Frederick, MD

Average snowfall in August: 0"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Frederick, MD

Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Frederick, 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 months with the least sunshine are January and February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Frederick, MD

Average sunshine days in August: 12 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index in August
Frederick, 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).

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Average cloud cover in August
Frederick, MD

Average cloud cover in August: 33

The months with the most cloud cover are January, February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in August
Frederick, MD

Average visibility in August: 6mi

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

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August weather forecast
Frederick, MD

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