August weather forecast and climate
McHenry, MD

Weather in August

The last month of the summer, August, is another warm month in McHenry, Maryland, with average temperature ranging between max 78.3°F (25.7°C) and min 56.7°F (13.7°C).

Temperature

In McHenry, the average high-temperature is relatively the same as in July - a still moderately hot 78.3°F (25.7°C). The average low-temperature, in August, is 56.7°F (13.7°C).

Humidity

April, June through August, with an average relative humidity of 79%, are the least humid months.

Rainfall

In McHenry, in August, it is raining for 18.3 days, with typically 2.56" (65mm) of accumulated precipitation. In McHenry, during the entire year, the rain falls for 166.5 days and collects up to 30.79" (782mm) of precipitation.

Snowfall

June through September are months without snowfall in McHenry.

Daylight

In McHenry, the average length of the day is 13.7h.

Sunshine

With an average of 9.7h of sunshine, August has the most sunshine of the year in McHenry.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 in August transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What are the least humid months in McHenry?

Months with the lowest humidity in McHenry, Maryland, are April, June through August, with an average relative humidity of 79%.

What is the average humidity in August in McHenry?

The average relative humidity in August in McHenry, Maryland, is 79%.

How much does it rain in McHenry in August?

In McHenry, Maryland, during August, the rain falls for 18.3 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow in McHenry?

In McHenry snow does not fall in June through September.

How many hours of daylight does McHenry have in August?

The average length of the day in August is 13.7h.

What month has the most sunshine in McHenry?

With an average of 9.7h of sunshine, August has the most sunshine of the year in McHenry, Maryland.

How many hours of sunshine does McHenry have in August?

In August, the average sunshine is 9.7h.

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

Months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index reading in August in McHenry?

The average daily maximum UV index in August in McHenry, Maryland, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in August
McHenry, MD

Average temperature in August - McHenry, MD
  • Average high temperature in August: 78.3°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (32°F).

  • Average low temperature in August: 56.7°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in August
McHenry, MD

Average pressure in August - McHenry, MD
  • Average pressure in August: 30"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.95").

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Average wind speed in August
McHenry, MD

Average wind speed in August - McHenry, MD
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in August
McHenry, MD

Average humidity in August - McHenry, MD
  • Average humidity in August: 79%

The month with the highest relative humidity is February (87%).
Months with the lowest relative humidity are April, June, July and August (79%).

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Average rainfall in August
McHenry, MD

Average rainfall in August - McHenry, MD
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is November (1.85").

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Average rainfall days in August
McHenry, MD

Average rainfall days in August - McHenry, MD
  • Average rainfall days in August: 18.3 days

The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in August
McHenry, MD

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

The month with the highest snowfall is February (5.28").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
McHenry, MD

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

The month with the highest number of snowfall days is January (11.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - McHenry, MD
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 9.7h

The month with the most sunshine is August (Average sunshine: 9.7h).
The month with the least sunshine is January (Average sunshine: 3.1h).

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Average sunshine days in August
McHenry, MD

Average sunshine days in August - McHenry, MD
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (8.3 days).

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Average UV index in August
McHenry, MD

Average UV index in August - McHenry, MD
  • Average UV index in August: 5

Months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
McHenry, MD

Average cloud cover in August - McHenry, MD
  • Average cloud cover in August: 40

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 40).

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Average visibility in August
McHenry, MD

Average visibility in August - McHenry, MD
  • Average visibility in August: 5mi

Months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).

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