August weather forecastFrederick, MD
August
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
The arrival of August sees a recorded average high-temperature of a still moderately hot 83.5°F (28.6°C), showing little divergence from the previous month's conditions. The nighttime temperature dips to a refreshing 63.5°F (17.5°C) on average during August.Heat index
In August, the average heat index is computed to be a hot 91.4°F (33°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
In August, the average relative humidity is 77%.Rainfall
In August, the rain falls for 16.3 days. Throughout August, 3.43" (87mm) of precipitation is accumulated. In Frederick, during the entire year, the rain falls for 159.7 days and collects up to 30.04" (763mm) of precipitation.Snowfall
In Frederick, snow does not fall in June through October.Daylight
The average length of the day in August 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, sunrise is at 6:37 am and sunset at 7:41 pm EDT.
Sunshine
In Frederick, 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 in Frederick, Maryland. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 6 during August translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in August /
Average sunshine in August
Frederick, MD
- Average daylight in August: 13h and 42min
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 6min
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).
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).
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).
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).
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).
