July weather forecastLanark, IL
July
Weather in July
July in Lanark, Illinois, retains the scorching effect of the summer season. With temperatures hitting a high of 79.9°F (26.6°C), July registers as the hottest month. The sun blazes in the sky for 14.9 hours, making it the second-longest day of the year. Amidst the summer glow, villagers experience precipitation of 2.05" (52mm), providing the much-needed relief to the dry environment. Needle, however, moves slightly down in the UV index, converging to an average of 6.Temperature
In Lanark, Illinois, the peak temperatures are generally noted in July, averaging a high of 79.9°F (26.6°C) and a low of 63.3°F (17.4°C).Humidity
In Lanark, the average relative humidity in July is 85%.Rainfall
In Lanark, in July, during 15.4 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Lanark, during the entire year, the rain falls for 130.8 days and collects up to 17.95" (456mm) of precipitation.Snowfall
In Lanark, snow does not fall in May through September.Daylight
The average length of the day in July is 14h and 53min.On the first day of July, sunrise is at 5:27 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:19 pm CDT.
Sunshine
July has the most sunshine of the year, with an average of 9.8h of sunshine.UV index
With an average maximum UV index of 6, July is the month with the highest UV index in Lanark. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Lanark, IL
- Average high temperature in July: 79.9°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in July: 63.3°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in July
Lanark, IL
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Lanark, 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
Lanark, IL
- Average humidity in July: 85%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in July
Lanark, IL
- Average rainfall in July: 2.05"
The wettest month (with the highest rainfall) is May (2.76").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in July
Lanark, IL
- Average rainfall days in July: 15.4 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in July
Lanark, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Lanark, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (11.2 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
Lanark, 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 48min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
Lanark, IL
- Average sunshine days in July: 12.7 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10 days).
Average UV index in July
Lanark, IL
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Lanark, IL
- Average cloud cover in July: 35
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in July
Lanark, 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).
