July weather forecastCortland, IL
July
Weather in July
July, the same as June, is another warm summer month in Cortland, Illinois, with an average temperature fluctuating between 63.1°F (17.3°C) and 80.2°F (26.8°C).Temperature
Cortland experiences its highest temperatures in July, with an average peak of 80.2°F (26.8°C) and a low of 63.1°F (17.3°C).Humidity
January and July, with an average relative humidity of 85%, are the most humid months.Rainfall
In Cortland, in July, during 18.1 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 152.6 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in July is 14h and 52min.On the first day of the month, sunrise is at 5:23 am and sunset at 8:33 pm. On the last day of July, sunrise is at 5:48 am and sunset at 8:13 pm CDT.
Sunshine
The month with the most sunshine is July, with an average of 9.6h of sunshine.UV index
The average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun's radiation is especially intense around midday; try to stay in shade during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Cortland, IL
- Average high temperature in July: 80.2°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in July: 63.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in July
Cortland, 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
Cortland, IL
- Average wind speed in July: 6.4mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in July
Cortland, IL
- Average humidity in July: 85%
The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in July
Cortland, IL
- Average rainfall in July: 3.15"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in July
Cortland, IL
- Average rainfall days in July: 18.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in July
Cortland, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Cortland, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Cortland, 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
Cortland, IL
- Average sunshine days in July: 10.3 days
The month with the most sunshine days is November (17.2 days).
The months with the least sunshine days are June and July (10.3 days).
Average UV index in July
Cortland, IL
- Average UV index in July: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Cortland, IL
- Average cloud cover in July: 37
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
Cortland, 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).
