July weather forecast
Saint Clair, PA

Weather in July

July, like June, in Saint Clair, Pennsylvania, is a moderately hot summer month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 81.5°F (27.5°C).

Temperature

The warmest month is July, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 61.3°F (16.3°C).

Heat index

The average heat index in July is computed to be a hot 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, pregnancy, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Saint Clair, the average relative humidity in July is 79%.

Rainfall

In Saint Clair, Pennsylvania, during July, the rain falls for 17.8 days and regularly aggregates up to 3.19" (81mm) of precipitation. Throughout the year, there are 172.9 rainfall days, and 34.21" (869mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in July in Saint Clair is 14h and 45min.
On the first day of July, sunrise is at 5:37 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:21 pm EDT.

Sunshine

The month with the most sunshine is July, with an average of 10.5h of sunshine.

UV index

July is the month with the highest UV index, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Saint Clair?

The warmest month in Saint Clair is July, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 61.3°F (16.3°C).

What is the temperature in July in Saint Clair?

In Saint Clair, Pennsylvania, in July, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 61.3°F (16.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in July is computed to be 87.8°F (31°C).

What is the average humidity in July in Saint Clair?

In July, the average relative humidity in Saint Clair, Pennsylvania, is 79%.

How much does it rain in Saint Clair in July?

In Saint Clair, during July, the rain falls for 17.8 days and regularly aggregates up to 3.19" (81mm) of precipitation.

When it does not snow in Saint Clair?

June through September are months without snowfall.

What is the average length of the day in July in Saint Clair?

In Saint Clair, Pennsylvania, the average day length in July is 14h and 45min.

What time are sunrise and sunset in July in Saint Clair?

In July, on the first day of the month, sunrise is at 5:37 am and sunset at 8:39 pm. On the last day of the month, in Saint Clair, Pennsylvania, sunrise is at 6:00 am and sunset at 8:21 pm EDT.

What month has the most sunshine in Saint Clair?

With an average of 10.5h of sunshine, July has the most sunshine of the year.

How many hours of sunshine does Saint Clair have in July?

In July, the average sunshine duration is 10.5h.

When is the highest UV index in Saint Clair?

July is the month with the highest UV index in Saint Clair, Pennsylvania, with an average maximum UV index of 6.

What is the UV index reading in July in Saint Clair?

In Saint Clair, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Saint Clair, PA

Average temperature in July - Saint Clair, PA
  • Average high temperature in July: 81.5°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in July: 61.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in July
Saint Clair, PA

Average pressure in July - Saint Clair, PA
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in July
Saint Clair, PA

Average wind speed in July - Saint Clair, PA
  • Average wind speed in July: 5mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in July
Saint Clair, PA

Average humidity in July - Saint Clair, PA
  • Average humidity in July: 79%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in July
Saint Clair, PA

Average rainfall in July - Saint Clair, PA
  • Average rainfall in July: 3.19"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days in July
Saint Clair, PA

Average rainfall days in July - Saint Clair, PA
  • Average rainfall days in July: 17.8 days

The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and November (10.8 days).

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Average snowfall in July
Saint Clair, PA

Average snowfall in July - Saint Clair, PA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (5.47").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Saint Clair, PA

Average snowfall days in July - Saint Clair, PA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Saint Clair, PA

Average daylight in July / Average sunshine in July - Saint Clair, PA
  • Average daylight in July: 14h and 45min

The month with the longest days is June (Average daylight: 15h and 3min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • Average sunshine in July: 10h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 24min).

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Average sunshine days in July
Saint Clair, PA

Average sunshine days in July - Saint Clair, PA
  • Average sunshine days in July: 10.7 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.6 days).

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Average UV index in July
Saint Clair, PA

Average UV index in July - Saint Clair, PA
  • Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in July
Saint Clair, PA

Average cloud cover in July - Saint Clair, PA
  • Average cloud cover in July: 32

The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in July
Saint Clair, PA

Average visibility in July - Saint Clair, PA
  • Average visibility in July: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).

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