July weather forecastMarengo, IL
July
Weather in July
July, like June, in Marengo, Illinois, is another warm summer month, with an average temperature ranging between min 62.6°F (17°C) and max 79.7°F (26.5°C).Temperature
Temperature records mark July as the warmest month, with highs averaging 79.7°F (26.5°C) and lows at 62.6°F (17°C).Humidity
The average relative humidity in July is 84%.Rainfall
In Marengo, in July, during 19.3 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Marengo, during the entire year, the rain falls for 154.6 days and collects up to 30.31" (770mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in July in Marengo is 14h and 54min.On the first day of the month, sunrise is at 5:22 am and sunset at 8:34 pm. On the last day of July, sunrise is at 5:47 am and sunset at 8:14 pm CDT.
Sunshine
July has the most sunshine of the year, with an average of 9.6h of sunshine.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Marengo, 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 (26.1°F).
- Average low temperature in July: 62.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in July
Marengo, 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
Marengo, IL
- Average wind speed in July: 6.4mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in July
Marengo, IL
- Average humidity in July: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in July
Marengo, IL
- Average rainfall in July: 3.35"
The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").
Average rainfall days in July
Marengo, IL
- Average rainfall days in July: 19.3 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in July
Marengo, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Marengo, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (12.3 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
Marengo, 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: 9h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in July
Marengo, IL
- Average sunshine days in July: 9.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in July
Marengo, IL
- Average UV index in July: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Marengo, IL
- Average cloud cover in July: 36
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in July
Marengo, IL
- Average visibility in July: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
