July weather forecastPercy, IL
July
Weather in July
July is a tropical summer month in Percy, Illinois, with an average temperature varying between 87.3°F (30.7°C) and 68.5°F (20.3°C).Temperature
Percy experiences its highest average temperatures in July, reaching a peak of 87.3°F (30.7°C) and a minimum of 68.5°F (20.3°C).Heat index
In July, the average heat index is evaluated at a torrid 102.2°F (39°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
The average relative humidity in July in Percy is 77%.Rainfall
In Percy, during July, the rain falls for 17.3 days and regularly aggregates up to 3.39" (86mm) of precipitation. Throughout the year, in Percy, there are 159.4 rainfall days, and 37.2" (945mm) of precipitation is accumulated.Snowfall
In Percy, snow does not fall in May through September.Daylight
The average length of the day in July in Percy, Illinois, is 14h and 30min.On the first day of July in Percy, sunrise is at 5:39 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:08 pm CDT.
Sunshine
In July, the average sunshine in Percy is 10.4h.UV index
The months with the highest UV index in Percy, Illinois, are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Percy, IL
- Average high temperature in July: 87.3°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in July: 68.5°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in July
Percy, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
Percy, IL
- Average wind speed in July: 5.7mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in July
Percy, IL
- Average humidity in July: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in July
Percy, IL
- Average rainfall in July: 3.39"
The wettest month (with the highest rainfall) is May (4.49").
The driest months (with the least rainfall) are February and September (2.13").
Average rainfall days in July
Percy, IL
- Average rainfall days in July: 17.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in July
Percy, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Percy, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.1 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
Percy, IL
- Average daylight in July: 14h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in July: 10h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in July
Percy, IL
- Average sunshine days in July: 11.3 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in July
Percy, IL
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in July
Percy, IL
- Average cloud cover in July: 30
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in July
Percy, IL
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
