August weather forecast
Saint Charles, MD

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Weather in August

The last month of the summer, August, is another warm month in Saint Charles, Maryland, with an average temperature fluctuating between 67.5°F (19.7°C) and 85.1°F (29.5°C).

Temperature

Shifting into August, Saint Charles records an average high-temperature of a warm 85.1°F (29.5°C), presenting minor fluctuations compared to the previous month. Saint Charles's temperature lowers to a mean of 67.5°F (19.7°C) during the nights in August.

Heat index

The heat index for August is appraised at a fiery hot 95°F (35°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In August, the average relative humidity in Saint Charles is 76%.

Rainfall

August is the month with the most rainfall. Rain falls for 15 days and accumulates 3.31" (84mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 37min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:17 pm. On the last day of August, in Saint Charles, sunrise is at 6:36 am and sunset at 7:38 pm EDT.

Sunshine

The average sunshine in August in Saint Charles, Maryland, is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Saint Charles. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

Is it hot in Saint Charles during August?

In August, in Saint Charles, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 67.5°F (19.7°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 95°F (35°C).

What is the average humidity in August in Saint Charles?

The average relative humidity in August in Saint Charles is 76%.

What is the rainiest month in Saint Charles?

The month with the most rainfall is August, when the rain falls for 15 days and typically aggregates up to 3.31" (84mm) of precipitation.

How many days does it rain in August in Saint Charles?

In Saint Charles, Maryland, during August, the rain falls for 15 days and regularly aggregates up to 3.31" (84mm) of precipitation.

When it does not snow in Saint Charles?

May through October are months without snowfall in Saint Charles, Maryland.

How many hours of daylight does Saint Charles have in August?

In Saint Charles, the average day length in August is 13h and 37min.

When are sunrise and sunset in August in Saint Charles?

On the first day of August in Saint Charles, Maryland, sunrise is at 6:10 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:38 pm EDT.

How long on average sun shines in August in Saint Charles?

In August, the average sunshine duration is 10h.

When is the highest UV index in Saint Charles?

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

What is the UV index reading in August in Saint Charles?

The average daily maximum UV index in August in Saint Charles is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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
Saint Charles, MD

Average temperature in August - Saint Charles, MD
  • Average high temperature in August: 85.1°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in August: 67.5°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 (28.4°F).

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Average pressure in August
Saint Charles, MD

Average pressure in August - Saint Charles, 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).

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Average wind speed in August
Saint Charles, MD

Average wind speed in August - Saint Charles, MD
  • Average wind speed in August: 5.2mph

The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in August
Saint Charles, MD

Average humidity in August - Saint Charles, MD
  • Average humidity in August: 76%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March and April (73%).

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Average rainfall in August
Saint Charles, MD

Average rainfall in August - Saint Charles, MD
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in August
Saint Charles, MD

Average rainfall days in August - Saint Charles, MD
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in August
Saint Charles, MD

Average snowfall in August - Saint Charles, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Saint Charles, MD

Average snowfall days in August - Saint Charles, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.3 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
Saint Charles, MD

Average daylight in August / Average sunshine in August - Saint Charles, MD
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).

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Average sunshine days in August
Saint Charles, MD

Average sunshine days in August - Saint Charles, MD
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in August
Saint Charles, MD

Average UV index in August - Saint Charles, 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 and December (UV index 2).

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Average cloud cover in August
Saint Charles, MD

Average cloud cover in August - Saint Charles, MD
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in August
Saint Charles, MD

Average visibility in August - Saint Charles, 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).

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Saint Charles, Maryland, USA

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