Contents
- 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
Weather in August
Temperature
August's presence records an average high-temperature of a still warm 78.3°F (25.7°C), closely mirroring July's climate. McHenry's average low-temperature for the month of August denotes a significant decline from the daily high, recording at a refreshing 56.7°F (13.7°C).Humidity
April, June through August, with an average relative humidity of 79%, are the least humid months in McHenry, Maryland.Rainfall
In McHenry, in August, it is raining for 18.3 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, there are 166.5 rainfall days, and 30.79" (782mm) of precipitation is accumulated.Snowfall
In McHenry, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 41min.On the first day of August, sunrise is at 6:17 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 7:49 pm EDT.
Sunshine
With an average of 9.7h of sunshine, August has the most sunshine of the year.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 5 in August translates into this advice:
Take precautions - Protection against sunburn is recommended. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does McHenry have in August?
When is the sunrise / sunset in August in McHenry?
What month has the most sunshine?
How long on average sun shines in August?
When is the highest UV index?
What is the UV index intensity in August?
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).
Average pressure in August
McHenry, 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
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).
Average humidity in August
McHenry, MD
- Average humidity in August: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, June, July and August (79%).
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").
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).
Average snowfall in August
McHenry, MD
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July, August and September (0").
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).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
McHenry, 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: 9h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
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).
Average UV index in August
McHenry, MD
- Average UV index in August: 5
The 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).
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).
Average visibility in August
McHenry, MD
- Average visibility in August: 5mi
The 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).
McHenry, Maryland, USA
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