Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
The highest temperatures are recorded in July, with averages reaching a high of 83.7°F (28.7°C) and a low of 62.2°F (16.8°C).Heat index
July's average heat index is calculated to be a hot 91.4°F (33°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 75%.Rainfall
July is the month with the most rainfall. Rain falls for 15.6 days and accumulates 1.34" (34mm) of precipitation.Snowfall
In Rosslyn Farms, snow does not fall in May through October.Daylight
In Rosslyn Farms, the average length of the day in July is 14h and 43min.On the first day of July in Rosslyn Farms, sunrise is at 5:54 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:35 pm EDT.
Sunshine
The average sunshine in July is 10.1h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Shield from overexposure. Defense against sun-related harm is required. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year?
How hot is it in July?
What is the least humid month?
What is the average humidity in July?
What is the wettest month?
How much does it rain in Rosslyn Farms in July?
When it does not snow?
How many hours of daylight does Rosslyn Farms have in July?
What time are sunrise and sunset in July?
How many hours of sunshine does Rosslyn Farms have in July?
What is the month with the highest UV index?
How high is the UV index in July?
Average temperature in July
Rosslyn Farms, PA
- Average high temperature in July: 83.7°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in July: 62.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in July
Rosslyn Farms, PA
- Average pressure in July: 29.98"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in July
Rosslyn Farms, PA
- Average wind speed in July: 4.7mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in July
Rosslyn Farms, PA
- Average humidity in July: 75%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in July
Rosslyn Farms, PA
- Average rainfall in July: 1.34"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in July
Rosslyn Farms, PA
- Average rainfall days in July: 15.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in July
Rosslyn Farms, PA
- Average snowfall in July: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Rosslyn Farms, PA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Rosslyn Farms, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in July
Rosslyn Farms, PA
- Average sunshine days in July: 12.7 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in July
Rosslyn Farms, PA
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Rosslyn Farms, PA
- Average cloud cover in July: 36
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in July
Rosslyn Farms, PA
- Average visibility in July: 6mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Rosslyn Farms, Pennsylvania, USA
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