August weather forecast
Columbia, MD

A beautiful and scenic setting around the waterfront homes at Wilde Lake in Columbia, Maryland
A beautiful and scenic setting around the waterfront homes at Wilde Lake in Columbia, Maryland

Weather in August

The last month of the summer, August, is also a moderately hot month in Columbia, Maryland, with an average temperature fluctuating between 67.3°F (19.6°C) and 83.8°F (28.8°C).

Temperature

In August, the average high-temperature is almost the same as in July - a still warm 83.8°F (28.8°C). In Columbia, the average low-temperature is 67.3°F (19.6°C).

Heat index

In August, the average heat index is computed to be a tropical 91.4°F (33°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. 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 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like pregnancy, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In August, the average relative humidity in Columbia is 73%.

Rainfall

The month with the most rainfall is August, when the rain falls for 17.1 days and typically aggregates up to 4.06" (103mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day in Columbia is 13h and 40min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:35 am and sunset at 7:40 pm EDT.

Sunshine

In August, the average sunshine in Columbia is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in August in Columbia?

The average high-temperature, in August, is 83.8°F (28.8°C), while the average low-temperature is 67.3°F (19.6°C). in August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), 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 Columbia?

In August, the average relative humidity in Columbia is 73%.

What is the wettest month in Columbia?

The month with the most rainfall in Columbia is August, when the rain falls for 17.1 days and typically aggregates up to 4.06" (103mm) of precipitation.

How many days does it rain in August in Columbia?

In August, in Columbia, the rain falls for 17.1 days. Throughout August, 4.06" (103mm) of precipitation is accumulated.

When it does not snow in Columbia?

In Columbia, Maryland, snow does not fall in April through October.

How many hours of daylight does Columbia have in August?

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

When is the sunrise / sunset in August in Columbia?

In August, on the first day of the month, sunrise is at 6:07 am and sunset at 8:19 pm. On the last day of the month, in Columbia, Maryland, sunrise is at 6:35 am and sunset at 7:40 pm EDT.

How many hours of sunshine does Columbia have in August?

In Columbia, Maryland, the average sunshine duration in August is 10.4h.

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

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

How high is the UV index in August in Columbia?

In Columbia, Maryland, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Columbia, MD

Average temperature in August - Columbia, MD
  • Average high temperature in August: 83.8°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in August: 67.3°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in August
Columbia, MD

Average pressure in August - Columbia, 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 (29.94"Hg).

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Average wind speed in August
Columbia, MD

Average wind speed in August - Columbia, MD
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in August
Columbia, MD

Average humidity in August - Columbia, MD
  • Average humidity in August: 73%

The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).

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Average rainfall in August
Columbia, MD

Average rainfall in August - Columbia, MD
  • Average rainfall in August: 4.06"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in August
Columbia, MD

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

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in August
Columbia, MD

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

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

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Average snowfall days in August
Columbia, MD

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

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Columbia, MD

Average daylight in August / Average sunshine in August - Columbia, MD
  • Average daylight in August: 13h and 40min

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

  • Average sunshine in August: 10h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

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Average sunshine days in August
Columbia, MD

Average sunshine days in August - Columbia, MD
  • Average sunshine days in August: 12 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).

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Average UV index in August
Columbia, MD

Average UV index in August - Columbia, 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
Columbia, MD

Average cloud cover in August - Columbia, MD
  • Average cloud cover in August: 32

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in August
Columbia, MD

Average visibility in August - Columbia, MD
  • Average visibility in August: 6mi

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

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