August weather forecast
Chesterfield, MD

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Weather in August

The last month of the summer, August, is another warm month in Chesterfield, Maryland, with an average temperature ranging between max 83.7°F (28.7°C) and min 69.1°F (20.6°C).

Temperature

Chesterfield experiences an average high-temperature of a still warm 83.7°F (28.7°C) with the onset of August, subtly varied from July's 85.6°F (29.8°C). The temperature lowers to an average of 69.1°F (20.6°C) during August nights.

Heat index

August's mean heat index is evaluated at a tropical 91.4°F (33°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

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

Rainfall

August is the month with the most rainfall in Chesterfield, Maryland. Rain falls for 13.9 days and accumulates 3.54" (90mm) of precipitation.

Snowfall

May through October are months without snowfall in Chesterfield, Maryland.

Daylight

In Chesterfield, the average length of the day in August is 13h and 39min.
On the first day of August in Chesterfield, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:37 pm EDT.

Sunshine

In Chesterfield, Maryland, 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 value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

How hot is it in Chesterfield in August?

August temperatures in Chesterfield, Maryland, vary between a high-temperature of 83.7°F (28.7°C) and a low-temperature of 69.1°F (20.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is evaluated at 91.4°F (33°C).

What is the average humidity in August in Chesterfield?

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

What is the rainiest month in Chesterfield?

August is the month with the most rainfall in Chesterfield. Rain falls for 13.9 days and accumulates 3.54" (90mm) of precipitation.

How much does it rain in Chesterfield in August?

In August, in Chesterfield, the rain falls for 13.9 days. Throughout August, 3.54" (90mm) of precipitation is accumulated.

When it does not snow in Chesterfield?

In Chesterfield, snow does not fall in May through October.

What is the average length of the day in August in Chesterfield?

The average day length in August in Chesterfield is 13h and 39min.

What time are sunrise and sunset in August in Chesterfield?

In August, on the first day of the month, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of the month, in Chesterfield, sunrise is at 6:34 am and sunset at 7:37 pm EDT.

How many hours of sunshine does Chesterfield have in August?

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

What is the month with the highest UV index in Chesterfield?

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

What is the UV index intensity in August in Chesterfield?

In Chesterfield, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe 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
Chesterfield, MD

Average temperature in August - Chesterfield, MD
  • Average high temperature in August: 83.7°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 (39.6°F).

  • Average low temperature in August: 69.1°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in August
Chesterfield, MD

Average pressure in August - Chesterfield, 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
Chesterfield, MD

Average wind speed in August - Chesterfield, MD
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in August
Chesterfield, MD

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

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

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Average rainfall in August
Chesterfield, MD

Average rainfall in August - Chesterfield, MD
  • Average rainfall in August: 3.54"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in August
Chesterfield, MD

Average rainfall days in August - Chesterfield, MD
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in August
Chesterfield, MD

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

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Chesterfield, MD

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

The month with the highest number of snowfall days is January (4.4 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
Chesterfield, MD

Average daylight in August / Average sunshine in August - Chesterfield, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in August
Chesterfield, MD

Average sunshine days in August - Chesterfield, MD
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in August
Chesterfield, MD

Average UV index in August - Chesterfield, 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, November and December (UV index 2).

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Average cloud cover in August
Chesterfield, MD

Average cloud cover in August - Chesterfield, MD
  • Average cloud cover in August: 30

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in August
Chesterfield, MD

Average visibility in August - Chesterfield, 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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Chesterfield, Maryland, USA

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