July weather forecast
Quincy, IL

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Weather in July

July, like June, in Quincy, Illinois, is another warm summer month, with an average temperature varying between 66.6°F (19.2°C) and 83.8°F (28.8°C).

Temperature

Quincy witnesses the warmest weather in July, with temperatures averaging a high of 83.8°F (28.8°C) and a low of 66.6°F (19.2°C).

Heat index

July's mean heat index is estimated at a tropical 93.2°F (34°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

June and July, with an average relative humidity of 81%, are the most humid months in Quincy.

Rainfall

In Quincy, in July, during 15.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Quincy, during the entire year, the rain falls for 134.2 days and collects up to 23.15" (588mm) of precipitation.

Snowfall

May through September are months without snowfall in Quincy.

Daylight

In Quincy, the average length of the day in July is 14h and 40min.
On the first day of July, sunrise is at 5:41 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:19 pm CDT.

Sunshine

With an average of 10.3h of sunshine, July has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Quincy. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month in Quincy?

Quincy's July weather, marked by an average high temperature of 83.8°F (28.8°C) and an average low temperature of 66.6°F (19.2°C), is the warmest in the year.

How hot does it get in Quincy in July?

July temperatures in Quincy, Illinois, vary between a high-temperature of 83.8°F (28.8°C) and a low-temperature of 66.6°F (19.2°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in July is estimated at 93.2°F (34°C).

What are the most humid months in Quincy?

The months with the highest humidity in Quincy, Illinois, are June and July, with an average relative humidity of 81%.

What is the average humidity in July in Quincy?

In Quincy, the average relative humidity in July is 81%.

How many days does it rain in July in Quincy?

In Quincy, Illinois, during July, the rain falls for 15.3 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow in Quincy?

In Quincy, snow does not fall in May through September.

How many hours of daylight does Quincy have in July?

In July, the average day length in Quincy is 14h and 40min.

When is the sunrise / sunset in July in Quincy?

On the first day of July in Quincy, sunrise is at 5:41 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:19 pm CDT.

What month has the most sunshine in Quincy?

July has the most sunshine of the year, with an average of 10.3h of sunshine.

How long on average sun shines in July in Quincy?

The average sunshine duration in July is 10.3h.

What is the month with the highest UV index in Quincy?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

How high is the UV index in July in Quincy?

The average daily maximum UV index in July in Quincy is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Quincy, IL

Average temperature in July - Quincy, IL
  • Average high temperature in July: 83.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in July: 66.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in July
Quincy, IL

Average pressure in July - Quincy, IL
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Quincy, IL

Average wind speed in July - Quincy, IL
  • Average wind speed in July: 6.4mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in July
Quincy, IL

Average humidity in July - Quincy, IL
  • Average humidity in July: 81%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Quincy, IL

Average rainfall in July - Quincy, IL
  • Average rainfall in July: 2.01"

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are January and December (1.02").

Average rainfall days in July
Quincy, IL

Average rainfall days in July - Quincy, IL
  • Average rainfall days in July: 15.3 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (5 days).

Average snowfall in July
Quincy, IL

Average snowfall in July - Quincy, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Quincy, IL

Average snowfall days in July - Quincy, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (8.8 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
Quincy, IL

Average daylight in July / Average sunshine in July - Quincy, IL
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in July
Quincy, IL

Average sunshine days in July - Quincy, IL
  • Average sunshine days in July: 13.2 days

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (11.1 days).

Average UV index in July
Quincy, IL

Average UV index in July - Quincy, IL
  • Average UV index in July: 6

The months with the highest UV index are 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
Quincy, IL

Average cloud cover in July - Quincy, IL
  • Average cloud cover in July: 28

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in July
Quincy, IL

Average visibility in July - Quincy, 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).

Quincy, Illinois, USA

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