Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July is the warmest month of the year, registering average temperatures as high as 84.7°F (29.3°C) and as low as 67.5°F (19.7°C).Heat index
In July, the heat index is appraised at a fiery hot 96.8°F (36°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
The months with the highest humidity are May and July, with an average relative humidity of 80%.Rainfall
In Lancaster, in July, during 16.8 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Lancaster, during the entire year, the rain falls for 155.6 days and collects up to 34.65" (880mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In July, the average length of the day is 14h and 32min.On the first day of July in Lancaster, sunrise is at 5:31 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:02 pm CDT.
Sunshine
The average sunshine in July in Lancaster is 10.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 6 in July translates into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the hottest time of year in Lancaster?
How hot is it in Lancaster in July?
What are the most humid months in Lancaster?
What is the average humidity in July in Lancaster?
How much does it rain in Lancaster in July?
When it does not snow in Lancaster?
What is the average length of the day in July in Lancaster?
What time are sunrise and sunset in July in Lancaster?
How long on average sun shines in July in Lancaster?
What is the month with the highest UV index in Lancaster?
What is the UV index intensity in July in Lancaster?
Average temperature in July
Lancaster, IL
- Average high temperature in July: 84.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°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 (24.8°F).
Average pressure in July
Lancaster, IL
- Average pressure in July: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in July
Lancaster, IL
- Average wind speed in July: 5.9mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in July
Lancaster, IL
- Average humidity in July: 80%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in July
Lancaster, IL
- Average rainfall in July: 2.91"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in July
Lancaster, IL
- Average rainfall days in July: 16.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in July
Lancaster, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Lancaster, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Lancaster, IL
- Average daylight in July: 14h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in July: 10h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in July
Lancaster, IL
- Average sunshine days in July: 12.3 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in July
Lancaster, IL
- Average UV index in July: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Lancaster, IL
- Average cloud cover in July: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in July
Lancaster, 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).
Lancaster, Illinois, USA
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