July weather forecastBoulder Hill, IL
July
Weather in July
July, the same as June, is another warm summer month in Boulder Hill, Illinois, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.2°F (17.9°C).Temperature
With average high and low temperatures of 81.1°F (27.3°C) and 64.2°F (17.9°C) respectively, July is Boulder Hill's warmest month.Heat index
The average heat index in July is calculated to be a hot 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Understand that the heat index values take into account shaded locations and mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
January, February, July and August, with an average relative humidity of 83%, are the most humid months in Boulder Hill.Rainfall
In July, the rain falls for 16.6 days. Throughout July, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 133.1 rainfall days, and 16.93" (430mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In July, the average length of the day is 14h and 51min.On the first day of July, sunrise is at 5:22 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:12 pm CDT.
Sunshine
The month with the most sunshine in Boulder Hill is July, with an average of 9.8h of sunshine.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 6 in July translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. 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. 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
Average temperature in July
Boulder Hill, IL
- Average high temperature in July: 81.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in July: 64.2°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in July
Boulder Hill, 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
Boulder Hill, IL
- Average wind speed in July: 6.2mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in July
Boulder Hill, IL
- Average humidity in July: 83%
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in July
Boulder Hill, IL
- Average rainfall in July: 2.17"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days in July
Boulder Hill, IL
- Average rainfall days in July: 16.6 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in July
Boulder Hill, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Boulder Hill, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Boulder Hill, IL
- Average daylight in July: 14h and 48min
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: 9h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in July
Boulder Hill, IL
- Average sunshine days in July: 10.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in July
Boulder Hill, IL
- 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 and December (UV index 1).
Average cloud cover in July
Boulder Hill, IL
- Average cloud cover in July: 34
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in July
Boulder Hill, IL
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
