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
In Jacksonville, the month of July registers the highest temperatures, averaging 83.3°F (28.5°C) at the peak and 66.7°F (19.3°C) at the lowest.Heat index
Throughout July, the heat index is estimated at a hot 93.2°F (34°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
With an average relative humidity of 83%, July is the most humid month.Rainfall
In Jacksonville, during July, the rain falls for 15.8 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, in Jacksonville, there are 148.2 rainfall days, and 29.37" (746mm) of precipitation is accumulated.Snowfall
In Jacksonville, snow does not fall in May through September.Daylight
In July, the average length of the day is 14h and 39min.On the first day of July, sunrise is at 5:37 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:14 pm CDT.
Sunshine
The average sunshine in July is 10.2h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in July interprets into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the warmest months?
How hot is July?
What is the most humid month?
What is the average humidity in July?
How many days does it rain in July?
When it does not snow?
How many hours of daylight does Jacksonville have in July?
When are sunrise and sunset in July?
How long on average sun shines in July?
What are the months with the highest UV index?
What is the UV index reading in July?
Average temperature in July
Jacksonville, IL
- Average high temperature in July: 83.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in July: 66.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in July
Jacksonville, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Jacksonville, IL
- Average wind speed in July: 6.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in July
Jacksonville, IL
- Average humidity in July: 83%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in July
Jacksonville, IL
- Average rainfall in July: 2.28"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in July
Jacksonville, IL
- Average rainfall days in July: 15.8 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and February (7.1 days).
Average snowfall in July
Jacksonville, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Jacksonville, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (9.6 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
Jacksonville, IL
- Average daylight in July: 14h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in July: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in July
Jacksonville, IL
- Average sunshine days in July: 12.3 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in July
Jacksonville, 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, November and December (UV index 2).
Average cloud cover in July
Jacksonville, IL
- Average cloud cover in July: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in July
Jacksonville, 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).
Jacksonville, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location