July weather forecast
Mertztown, PA

Share

Weather in July

July, the same as June, is a moderately hot summer month in Mertztown, Pennsylvania, with an average temperature ranging between max 83.8°F (28.8°C) and min 63.5°F (17.5°C).

Temperature

July is the month that records the highest temperatures, with averages ranging from a high of 83.8°F (28.8°C) to a low of 63.5°F (17.5°C).

Heat index

Throughout July, the heat index is appraised at a hot 91.4°F (33°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. 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

April and July, with an average relative humidity of 76%, are the least humid months in Mertztown, Pennsylvania.

Rainfall

In Mertztown, Pennsylvania, in July, it is raining for 15.4 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, in Mertztown, there are 155.8 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Mertztown, the average length of the day in July is 14h and 44min.
On the first day of the month, sunrise is at 5:36 am and sunset at 8:37 pm. On the last day of July, in Mertztown, sunrise is at 5:59 am and sunset at 8:18 pm EDT.

Sunshine

With an average of 10.4h of sunshine, July has the most sunshine of the year.

UV index

June and July, 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 threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In July, the maximum UV index of 6 transforms into these recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

Frequently asked questions

What are the warmest months in Mertztown?

In Mertztown, Pennsylvania, the peak average temperatures are observed in July, with a high of 83.8°F (28.8°C) and a low of 63.5°F (17.5°C).

Is it hot in Mertztown during July?

In July, in Mertztown, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 63.5°F (17.5°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is appraised at 91.4°F (33°C).

What are the least humid months in Mertztown?

April and July, with an average relative humidity of 76%, are the least humid months in Mertztown.

What is the average humidity in July in Mertztown?

In July, the average relative humidity in Mertztown is 76%.

How much does it rain in Mertztown in July?

In Mertztown, Pennsylvania, during July, the rain falls for 15.4 days and regularly aggregates up to 2.87" (73mm) of precipitation.

When it does not snow in Mertztown?

In Mertztown, Pennsylvania, snow does not fall in June through September.

What is the average length of the day in July in Mertztown?

In July, the average day length is 14h and 44min.

When is the sunrise / sunset in July in Mertztown?

On the first day of July in Mertztown, sunrise is at 5:36 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:18 pm EDT.

What month has the most sunshine in Mertztown?

The month with the most sunshine is July, with an average of 10.4h of sunshine.

How long on average sun shines in July in Mertztown?

The average sunshine duration in July in Mertztown, Pennsylvania, is 10.4h.

What are the months with the highest UV index in Mertztown?

The months with the highest UV index in Mertztown are June and July, with an average maximum UV index of 6.

What is the UV index intensity in July in Mertztown?

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

Average temperature in July - Mertztown, 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 (34.3°F).

  • Average low temperature in July: 63.5°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

[Resources]

Average pressure in July
Mertztown, PA

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

[Resources]

Average wind speed in July
Mertztown, PA

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

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

[Resources]

Average humidity in July
Mertztown, PA

Average humidity in July - Mertztown, PA
  • Average humidity in July: 76%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

[Resources]

Average rainfall in July
Mertztown, PA

Average rainfall in July - Mertztown, PA
  • Average rainfall in July: 2.87"

The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").

[Resources]

Average rainfall days in July
Mertztown, PA

Average rainfall days in July - Mertztown, PA
  • Average rainfall days in July: 15.4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).

[Resources]

Average snowfall in July
Mertztown, PA

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

The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in July
Mertztown, PA

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

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

Average daylight in July / Average sunshine in July - Mertztown, PA
  • Average daylight in July: 14h 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 18min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

[Resources]

Average sunshine days in July
Mertztown, PA

Average sunshine days in July - Mertztown, PA
  • Average sunshine days in July: 13.3 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).

[Resources]

Average UV index in July
Mertztown, PA

Average UV index in July - Mertztown, PA
  • Average UV index in July: 6

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

[Resources]

Average cloud cover in July
Mertztown, PA

Average cloud cover in July - Mertztown, PA
  • Average cloud cover in July: 33

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

[Resources]

Average visibility in July
Mertztown, PA

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

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

[Resources]

Mertztown, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location