August weather forecast
Casselman, PA

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Weather in August

The last month of the summer, August, is another warm month in Casselman, Pennsylvania, with an average temperature fluctuating between 77.5°F (25.3°C) and 56.8°F (13.8°C).

Temperature

August's advent presents an average high-temperature of a still warm 77.5°F (25.3°C), indicating a slight variation from the conditions of the previous month. In Casselman, August nights witness a steady temperature drop to a moderate 56.8°F (13.8°C).

Humidity

In Casselman, the average relative humidity in August is 80%.

Rainfall

In Casselman, in August, during 17.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Casselman, during the entire year, the rain falls for 183.2 days and collects up to 35.94" (913mm) of precipitation.

Snowfall

In Casselman, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 42min.
On the first day of the month, sunrise is at 6:16 am and sunset at 8:30 pm. On the last day of August, sunrise is at 6:44 am and sunset at 7:49 pm EDT.

Sunshine

The months with the most sunshine are July and August, with an average of 9.6h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 5 during August leads to these advisories:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. To protect against the Sun's most potent rays, avoid direct exposure around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

What is the average August temperature?

In August, in Casselman, the average high-temperature is 77.5°F (25.3°C), and the average low-temperature is 56.8°F (13.8°C).

What is the average humidity in August?

In August, the average relative humidity is 80%.

How many days does it rain in August?

In Casselman, in August, during 17.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Casselman have in August?

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

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:16 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:49 pm EDT.

What is the month with the most sunshine?

July and August, with an average of 9.6h of sunshine, are months with the most sunshine in Casselman.

How many hours of sunshine does Casselman have in August?

The average sunshine duration in August is 9.6h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

How high is the UV index in August?

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Casselman, PA

Average temperature in August - Casselman, PA
  • Average high temperature in August: 77.5°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in August: 56.8°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in August
Casselman, PA

Average pressure in August - Casselman, PA
  • 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
Casselman, PA

Average wind speed in August - Casselman, PA
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August
Casselman, PA

Average humidity in August - Casselman, PA
  • Average humidity in August: 80%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June and July (79%).

Average rainfall in August
Casselman, PA

Average rainfall in August - Casselman, PA
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is November (2.09").

Average rainfall days in August
Casselman, PA

Average rainfall days in August - Casselman, PA
  • Average rainfall days in August: 17.5 days

The month with the highest number of rainy days is May (22.8 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in August
Casselman, PA

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

The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Casselman, PA

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

The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Casselman, PA

Average daylight in August / Average sunshine in August - Casselman, 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: 9h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in August
Casselman, PA

Average sunshine days in August - Casselman, PA
  • Average sunshine days in August: 10.5 days

The months with the most sunshine days are October and November (12.5 days).
The month with the least sunshine days is May (6.2 days).

Average UV index in August
Casselman, PA

Average UV index in August - Casselman, PA
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in August
Casselman, PA

Average cloud cover in August - Casselman, PA
  • Average cloud cover in August: 40

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 40).

Average visibility in August
Casselman, PA

Average visibility in August - Casselman, PA
  • Average visibility in August: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).

Casselman, Pennsylvania, USA

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