July weather forecast
Sylmar, PA

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Weather in July

July, the same as June, is a moderately hot summer month in Sylmar, Pennsylvania, with an average temperature ranging between min 65.8°F (18.8°C) and max 83.8°F (28.8°C).

Temperature

July proves to be the warmest month, recording an average peak temperature of 83.8°F (28.8°C) and a minimum temperature of 65.8°F (18.8°C).

Heat index

For most parts of July, the heat index is calculated to be a hot 93.2°F (34°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. 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

The average relative humidity in July is 79%.

Rainfall

In Sylmar, in July, during 14.9 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 130.4 rainfall days, and 16.3" (414mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 14h and 39min.
On the first day of the month, sunrise is at 5:40 am and sunset at 8:36 pm. On the last day of July, in Sylmar, sunrise is at 6:02 am and sunset at 8:17 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.6h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 during July translates into the following guidance:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. 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.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in Sylmar?

In Sylmar, the average highest temperatures are observed in July, with a high of 83.8°F (28.8°C) and a low of 65.8°F (18.8°C).

How hot is July?

In July, the average high-temperature and low-temperature are 83.8°F (28.8°C) and 65.8°F (18.8°C) respectively. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 93.2°F (34°C).

What is the average humidity in July?

The average relative humidity in July is 79%.

How many days does it rain in July?

In Sylmar, during July, the rain falls for 14.9 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in July?

The average day length in July is 14h and 39min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 5:40 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:17 pm EDT.

What month has the most sunshine?

With an average of 10.6h of sunshine, July has the most sunshine of the year.

How many hours of sunshine does Sylmar have in July?

In Sylmar, the average sunshine duration in July is 10.6h.

What is the month with the highest UV index?

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

How high is the UV index in July?

In Sylmar, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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 July
Sylmar, PA

Average temperature in July - Sylmar, PA
  • Average high temperature in July: 83.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in July: 65.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

Average pressure in July
Sylmar, PA

Average pressure in July - Sylmar, PA
  • Average pressure in July: 29.96"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).

Average wind speed in July
Sylmar, PA

Average wind speed in July - Sylmar, PA
  • Average wind speed in July: 5.3mph

The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in July
Sylmar, PA

Average humidity in July - Sylmar, PA
  • Average humidity in July: 79%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, March, April and November (76%).

Average rainfall in July
Sylmar, PA

Average rainfall in July - Sylmar, PA
  • Average rainfall in July: 2.09"

The wettest month (with the highest rainfall) is August (2.36").
The driest month (with the least rainfall) is January (0.91").

Average rainfall days in July
Sylmar, PA

Average rainfall days in July - Sylmar, PA
  • Average rainfall days in July: 14.9 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (6 days).

Average snowfall in July
Sylmar, PA

Average snowfall in July - Sylmar, PA
  • Average snowfall in July: 0"

The month with the highest snowfall is March (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Sylmar, PA

Average snowfall days in July - Sylmar, PA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Sylmar, PA

Average daylight in July / Average sunshine in July - Sylmar, PA
  • Average daylight in July: 14h 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 24min).

  • Average sunshine in July: 10h and 4min

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 48min).

Average sunshine days in July
Sylmar, PA

Average sunshine days in July - Sylmar, PA
  • Average sunshine days in July: 13.4 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (13.2 days).

Average UV index in July
Sylmar, PA

Average UV index in July - Sylmar, PA
  • Average UV index in July: 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 July
Sylmar, PA

Average cloud cover in July - Sylmar, PA
  • Average cloud cover in July: 32

The months with the most cloud cover are February, March and May (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in July
Sylmar, PA

Average visibility in July - Sylmar, PA
  • Average visibility in July: 6mi

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

Sylmar, Pennsylvania, USA

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