August weather forecast
Olney, MD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Olney, Maryland, with an average temperature ranging between max 84.9°F (29.4°C) and min 67.6°F (19.8°C).

Temperature

Olney experiences an average high-temperature of a moderately hot 84.9°F (29.4°C) in August, subtly different from July's 87.3°F (30.7°C). Olney cools down to an average low-temperature of 67.6°F (19.8°C) throughout the month of August.

Heat index

For most parts of August, the heat index is estimated at a tropical 93.2°F (34°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

The average relative humidity in August in Olney, Maryland, is 71%.

Rainfall

August is the month with the most rainfall. Rain falls for 17.1 days and accumulates 4.13" (105mm) of precipitation.

Snowfall

In Olney, snow does not fall in May through October.

Daylight

In Olney, the average length of the day in August is 13h and 39min.
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 7:40 pm EDT.

Sunshine

In Olney, the average sunshine in August is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Olney. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

In Olney, in August, the average high-temperature is 84.9°F (29.4°C), and the average low-temperature is 67.6°F (19.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in August is estimated at 93.2°F (34°C).

What is the average humidity in August?

In Olney, the average relative humidity in August is 71%.

What is the rainiest month?

The month with the most rainfall is August, when the rain falls for 17.1 days and typically aggregates up to 4.13" (105mm) of precipitation.

How much does it rain in August?

In Olney, in August, it is raining for 17.1 days, with typically 4.13" (105mm) of accumulated precipitation.

When it does not snow in Olney?

In Olney, Maryland, snow does not fall in May through October.

How many hours of daylight does Olney have in August?

In August, the average day length in Olney is 13h and 39min.

When 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 7:40 pm EDT.

How long on average sun shines in August?

In August, the average sunshine duration in Olney is 10.2h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In Olney, Maryland, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's 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
Olney, MD

Average temperature in August - Olney, MD
  • Average high temperature in August: 84.9°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in August
Olney, MD

Average pressure in August - Olney, 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
Olney, MD

Average wind speed in August - Olney, MD
  • Average wind speed in August: 5.1mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in August
Olney, MD

Average humidity in August - Olney, MD
  • Average humidity in August: 71%

The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in August
Olney, MD

Average rainfall in August - Olney, MD
  • Average rainfall in August: 4.13"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in August
Olney, MD

Average rainfall days in August - Olney, MD
  • Average rainfall days in August: 17.1 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in August
Olney, MD

Average snowfall in August - Olney, MD
  • Average snowfall in August: 0"

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

Average snowfall days in August
Olney, MD

Average snowfall days in August - Olney, MD
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (5.1 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
Olney, MD

Average daylight in August / Average sunshine in August - Olney, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in August
Olney, MD

Average sunshine days in August - Olney, MD
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).

Average UV index in August
Olney, MD

Average UV index in August - Olney, 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
Olney, MD

Average cloud cover in August - Olney, MD
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Olney, MD

Average visibility in August - Olney, 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).

Olney, Maryland, USA

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