July weather forecast
Mendon, IL

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Weather in July

July, the same as June, is another warm summer month in Mendon, Illinois, with an average temperature fluctuating between 83.8°F (28.8°C) and 66.6°F (19.2°C).

Temperature

Mendon notes the warmest temperatures in July, with a high average of 83.8°F (28.8°C) and a low of 66.6°F (19.2°C).

Heat index

The heat index value for July is evaluated at a hot 93.2°F (34°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
The metrics for the heat index are tailored for both shady environments and light winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

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

Rainfall

In Mendon, during July, the rain falls for 15.3 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Mendon, during the entire year, the rain falls for 134.2 days and collects up to 23.15" (588mm) of precipitation.

Snowfall

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

Daylight

In Mendon, the average length of the day in July is 14h and 41min.
On the first day of July, sunrise is at 5:40 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:03 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. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: In July, the maximum UV index of 6 suggests these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

July temperatures tend to peak at an average high of 83.8°F (28.8°C) and dip to a low of 66.6°F (19.2°C).

How hot is it in July?

In July, the average high-temperature and low-temperature are 83.8°F (28.8°C) and 66.6°F (19.2°C) respectively. In July, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 93.2°F (34°C).

What is the most humid month?

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

What is the average humidity in July in Mendon?

The average relative humidity in July is 81%.

How much does it rain in Mendon in July?

In July, the rain falls for 15.3 days. Throughout July, 2.01" (51mm) of precipitation is accumulated.

When it does not snow?

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

What is the average length of the day in July?

The average day length in July is 14h and 41min.

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 5:40 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:19 pm CDT.

What month has the most sunshine?

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

How long on average sun shines in July?

The average sunshine duration in July is 10.3h.

When is the highest UV index?

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 Mendon, Illinois, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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
Mendon, IL

Average temperature in July - Mendon, 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
Mendon, IL

Average pressure in July - Mendon, 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
Mendon, IL

Average wind speed in July - Mendon, 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
Mendon, IL

Average humidity in July - Mendon, 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
Mendon, IL

Average rainfall in July - Mendon, 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
Mendon, IL

Average rainfall days in July - Mendon, 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
Mendon, IL

Average snowfall in July - Mendon, 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
Mendon, IL

Average snowfall days in July - Mendon, 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
Mendon, IL

Average daylight in July / Average sunshine in July - Mendon, 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
Mendon, IL

Average sunshine days in July - Mendon, 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
Mendon, IL

Average UV index in July - Mendon, 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
Mendon, IL

Average cloud cover in July - Mendon, 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
Mendon, IL

Average visibility in July - Mendon, 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).

Mendon, Illinois, USA

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