July weather forecastRiver Grove, IL
July
Weather in July
July, like June, in River Grove, Illinois, is another warm summer month, with an average temperature fluctuating between 67.5°F (19.7°C) and 79.7°F (26.5°C).Temperature
The warmest temperatures occur during July, when averages reach a peak of 79.7°F (26.5°C) and a low of 67.5°F (19.7°C).Humidity
In River Grove, the average relative humidity in July is 76%.Rainfall
In River Grove, in July, it is raining for 18.5 days, with typically 3.74" (95mm) of accumulated precipitation. Throughout the year, in River Grove, there are 157.8 rainfall days, and 33.7" (856mm) of precipitation is accumulated.Snowfall
In River Grove, snow does not fall in June through September.Daylight
In River Grove, the average length of the day in July is 14h and 52min.On the first day of the month, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of July, sunrise is at 5:44 am and sunset at 8:10 pm CDT.
Sunshine
In River Grove, the average sunshine in July is 10.4h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes 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:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
River Grove, IL
- Average high temperature in July: 79.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in July: 67.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in July
River Grove, 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
River Grove, IL
- Average wind speed in July: 7mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in July
River Grove, IL
- Average humidity in July: 76%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
River Grove, IL
- Average rainfall in July: 3.74"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in July
River Grove, IL
- Average rainfall days in July: 18.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in July
River Grove, IL
- Average snowfall in July: 0"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
River Grove, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
River Grove, 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 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
River Grove, IL
- Average sunshine days in July: 9.9 days
The month with the most sunshine days is December (16.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in July
River Grove, 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 and December (UV index 1).
Average cloud cover in July
River Grove, IL
- Average cloud cover in July: 28
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in July
River Grove, 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).
