July weather forecastLyndon, IL
July
Weather in July
July, the same as June, is another warm summer month in Lyndon, Illinois, with an average temperature ranging between max 80.2°F (26.8°C) and min 64°F (17.8°C).Temperature
Lyndon's temperatures tend to reach their peak averages in July, with a high of 80.2°F (26.8°C) and a low of 64°F (17.8°C).Humidity
The months with the highest humidity are January and July, with an average relative humidity of 85%.Rainfall
In Lyndon, in July, during 17.7 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. Throughout the year, there are 151.5 rainfall days, and 30.24" (768mm) 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 the month, sunrise is at 5:29 am and sunset at 8:38 pm. On the last day of July, sunrise is at 5:53 am and sunset at 8:18 pm CDT.
Sunshine
With an average of 9.9h of sunshine, July has the most sunshine of the year in Lyndon.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 in July translates into these instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Lyndon, 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 (27.7°F).
- Average low temperature in July: 64°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in July
Lyndon, IL
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Lyndon, IL
- Average wind speed in July: 6.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in July
Lyndon, IL
- Average humidity in July: 85%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Lyndon, IL
- Average rainfall in July: 2.99"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in July
Lyndon, IL
- Average rainfall days in July: 17.7 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in July
Lyndon, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Lyndon, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.5 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
Lyndon, 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 54min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in July
Lyndon, IL
- Average sunshine days in July: 9.4 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in July
Lyndon, IL
- Average UV index in July: 6
The months with the highest UV index are 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
Lyndon, IL
- Average cloud cover in July: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in July
Lyndon, IL
- Average visibility in July: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).





