August weather forecast
Millbourne, PA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Millbourne, Pennsylvania, with temperature in the range of an average low of 67.5°F (19.7°C) and an average high of 83.7°F (28.7°C).

Temperature

Millbourne, Pennsylvania, greets August with an average high-temperature of a still moderately hot 83.7°F (28.7°C), marking a slight deviation from the preceding month. Millbourne's nights in August experience an average temperature drop to a comfortable 67.5°F (19.7°C).

Heat index

For August, the heat index is computed to be a tropical 89.6°F (32°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

April, July and August, with an average relative humidity of 71%, are the least humid months.

Rainfall

The wettest months are July and August, with an average 1.14" (29mm) of rainfall.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 42min.
On the first day of August, sunrise is at 6:00 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:33 pm EDT.

Sunshine

In Millbourne, the average sunshine in August is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the UV index of 6 transforms into the following advice:
Avoid excessive sunlight. Those with lighter skin may experience burning 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

In Millbourne, 83.7°F (28.7°C) is the average high-temperature and 67.5°F (19.7°C) is the average low-temperature during August. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is computed to be 89.6°F (32°C).

What is the least humid month?

April, July and August, with an average relative humidity of 71%, are the least humid months.

What is the average humidity in August?

The average relative humidity in August is 71%.

What is the wettest month?

The wettest months are July and August, with an average 1.14" (29mm) of rainfall.

How many days does it rain in August?

In Millbourne, during August, the rain falls for 12.2 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When it does not snow?

In Millbourne, snow does not fall in April through October.

What is the average length of the day in August?

In August, the average day length is 13h and 42min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:00 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:33 pm EDT.

How long on average sun shines in August?

In Millbourne, the average sunshine duration in August is 10h.

What is the month with the highest UV index?

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

How high is the UV index in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents 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
Millbourne, PA

Average temperature in August - Millbourne, PA
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°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 (25°F).

Average pressure in August
Millbourne, PA

Average pressure in August - Millbourne, PA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Millbourne, PA

Average wind speed in August - Millbourne, PA
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in August
Millbourne, PA

Average humidity in August - Millbourne, PA
  • Average humidity in August: 71%

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

Average rainfall in August
Millbourne, PA

Average rainfall in August - Millbourne, PA
  • Average rainfall in August: 1.14"

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in August
Millbourne, PA

Average rainfall days in August - Millbourne, PA
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in August
Millbourne, PA

Average snowfall in August - Millbourne, PA
  • Average snowfall in August: 0"

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Millbourne, PA

Average snowfall days in August - Millbourne, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.5 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
Millbourne, PA

Average daylight in August / Average sunshine in August - Millbourne, PA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in August
Millbourne, PA

Average sunshine days in August - Millbourne, PA
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

Average UV index in August
Millbourne, PA

Average UV index in August - Millbourne, PA
  • 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
Millbourne, PA

Average cloud cover in August - Millbourne, PA
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in August
Millbourne, PA

Average visibility in August - Millbourne, PA
  • 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).

Millbourne, Pennsylvania, USA

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