July weather forecastJustice, IL
July
Weather in July
July, like June, in Justice, Illinois, is another warm summer month, with an average temperature ranging between min 66.6°F (19.2°C) and max 81.9°F (27.7°C).Temperature
July is Justice's warmest month, registering average high temperatures of 81.9°F (27.7°C) and lows of 66.6°F (19.2°C).Heat index
July's mean heat index is calculated to be a tropical 87.8°F (31°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In Justice, the average relative humidity in July is 77%.Rainfall
In July, in Justice, the rain falls for 18.7 days. Throughout July, 3.86" (98mm) of precipitation is accumulated. Throughout the year, in Justice, Illinois, there are 166.8 rainfall days, and 34.96" (888mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Justice, the average length of the day in July is 14h and 51min.On the first day of July in Justice, sunrise is at 5:20 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:10 pm CDT.
Sunshine
The average sunshine in July is 10.1h.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index in Justice. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In July, a regular UV index of 6 translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Justice, IL
- Average high temperature in July: 81.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in July: 66.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in July
Justice, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Justice, IL
- Average wind speed in July: 6.4mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in July
Justice, IL
- Average humidity in July: 77%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Justice, IL
- Average rainfall in July: 3.86"
The wettest month (with the highest rainfall) is May (4.61").
The driest months (with the least rainfall) are November and December (1.77").
Average rainfall days in July
Justice, IL
- Average rainfall days in July: 18.7 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in July
Justice, IL
- Average snowfall in July: 0"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Justice, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (13.3 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
Justice, IL
- Average daylight in July: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 10h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
Justice, IL
- Average sunshine days in July: 8.8 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is June (8.2 days).
Average UV index in July
Justice, IL
- Average UV index in July: 6
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Justice, IL
- Average cloud cover in July: 31
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in July
Justice, IL
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
