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
Saint Johns Green commences August with an average high-temperature of a still moderately hot 83.5°F (28.6°C), maintaining a close resemblance to the previous month. August brings an average low-temperature of 67.3°F (19.6°C) to Saint Johns Green.Heat index
For August, the heat index is calculated to be a tropical 89.6°F (32°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In Saint Johns Green, the average relative humidity in August is 73%.Rainfall
August is the month with the most rainfall in Saint Johns Green. Rain falls for 15.9 days and accumulates 3.74" (95mm) of precipitation.Snowfall
In Saint Johns Green, snow does not fall in May through October.Daylight
In August, the average length of the day is 13h and 40min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:35 am and sunset at 7:39 pm EDT.
Sunshine
The average sunshine in August 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 of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 6 in August interprets into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August?
What is the average humidity in August?
What is the rainiest month?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Saint Johns Green have in August?
When are sunrise and sunset in August?
How long on average sun shines in August in Saint Johns Green?
What are the months with the highest UV index?
How high is the UV index in August?
Average temperature in August
Saint Johns Green, 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 (38.1°F).
- Average low temperature in August: 67.3°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
Saint Johns Green, 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).
Average wind speed in August
Saint Johns Green, MD
- Average wind speed in August: 5.4mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in August
Saint Johns Green, MD
- Average humidity in August: 73%
The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in August
Saint Johns Green, MD
- Average rainfall in August: 3.74"
The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in August
Saint Johns Green, MD
- Average rainfall days in August: 15.9 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in August
Saint Johns Green, MD
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Saint Johns Green, MD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.9 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
Saint Johns Green, 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 2min
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
Saint Johns Green, MD
- Average sunshine days in August: 13 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in August
Saint Johns Green, 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
Saint Johns Green, MD
- Average cloud cover in August: 31
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in August
Saint Johns Green, 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).
Saint Johns Green, Maryland, USA
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