July weather forecastMerrian, PA
July
Weather in July
July, the same as June, is another warm summer month in Merrian, Pennsylvania, with an average temperature ranging between max 81.5°F (27.5°C) and min 61.2°F (16.2°C).Temperature
With its high average temperature of 81.5°F (27.5°C) and a low of 61.2°F (16.2°C), July is regarded as the warmest month.Heat index
July's heat index is evaluated at a hot 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild 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 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. 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
In July, the average relative humidity is 79%.Rainfall
The months with the most rainfall in Merrian are May and July, with an average 1.97" (50mm) of precipitation.Snowfall
In Merrian, snow does not fall in June through September.Daylight
The average length of the day in July is 14h and 46min.On the first day of July, sunrise is at 5:38 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:22 pm EDT.
Sunshine
The month with the most sunshine in Merrian is July, with an average of 10.3h of sunshine.UV index
In July, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Merrian, 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°F).
- Average low temperature in July: 61.2°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in July
Merrian, 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).
Average wind speed in July
Merrian, PA
- Average wind speed in July: 4.8mph
The windiest months (with the highest average wind speed) are March and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in July
Merrian, PA
- Average humidity in July: 79%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in July
Merrian, PA
- Average rainfall in July: 1.97"
The wettest months (with the highest rainfall) are May and July (1.97").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in July
Merrian, PA
- Average rainfall days in July: 14.7 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in July
Merrian, PA
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Merrian, PA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Merrian, PA
- Average daylight in July: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in July: 10h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in July
Merrian, PA
- Average sunshine days in July: 13.3 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in July
Merrian, PA
- Average UV index in July: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
Merrian, PA
- Average cloud cover in July: 33
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in July
Merrian, PA
- Average visibility in July: 5mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
