July weather forecast
Waltonville, IL

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Weather in July

July is a hot summer month in Waltonville, Illinois, with an average temperature fluctuating between 68.5°F (20.3°C) and 87.1°F (30.6°C).

Temperature

July, marked by an average high-temperature of 87.1°F (30.6°C) and a low-temperature of 68.5°F (20.3°C), is the warmest month.

Heat index

The heat index for July is computed to be a very hot 102.2°F (39°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In July, the average relative humidity is 77%.

Rainfall

In Waltonville, in July, during 13.4 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 122.7 rainfall days, and 18.03" (458mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Waltonville, the average length of the day in July is 14h and 31min.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:23 pm. On the last day of July, sunrise is at 5:58 am and sunset at 8:06 pm CDT.

Sunshine

The month with the most sunshine is July, with an average of 10.5h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In July, a daily UV index of 6 turns into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

The highest temperatures are recorded in July, with averages reaching a high of 87.1°F (30.6°C) and a low of 68.5°F (20.3°C).

How hot is it in Waltonville in July?

July temperatures vary between a high-temperature of 87.1°F (30.6°C) and a low-temperature of 68.5°F (20.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 102.2°F (39°C).

What is the average humidity in July?

The average relative humidity in July is 77%.

How many days does it rain in July?

In Waltonville, in July, it is raining for 13.4 days, with typically 1.65" (42mm) of accumulated precipitation.

When it does not snow?

May through September are months without snowfall in Waltonville.

How many hours of daylight does Waltonville have in July?

In Waltonville, the average day length in July is 14h and 31min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:37 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:06 pm CDT.

What month has the most sunshine?

With an average of 10.5h of sunshine, July has the most sunshine of the year.

How long on average sun shines in July?

In Waltonville, the average sunshine duration in July is 10.5h.

When is the highest UV index?

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

How high is the UV index in July?

In July, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
Waltonville, IL

Average temperature in July - Waltonville, IL
  • Average high temperature in July: 87.1°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in July: 68.5°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in July
Waltonville, IL

Average pressure in July - Waltonville, 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 (29.93"Hg).

Average wind speed in July
Waltonville, IL

Average wind speed in July - Waltonville, IL
  • Average wind speed in July: 5.9mph

The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

Average humidity in July
Waltonville, IL

Average humidity in July - Waltonville, IL
  • Average humidity in July: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in July
Waltonville, IL

Average rainfall in July - Waltonville, IL
  • Average rainfall in July: 1.65"

The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is September (0.98").

Average rainfall days in July
Waltonville, IL

Average rainfall days in July - Waltonville, IL
  • Average rainfall days in July: 13.4 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in July
Waltonville, IL

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

The month with the highest snowfall is January (0.71").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Waltonville, IL

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

The month with the highest number of snowfall days is January (4.5 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
Waltonville, IL

Average daylight in July / Average sunshine in July - Waltonville, 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 36min).

  • Average sunshine in July: 10h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in July
Waltonville, IL

Average sunshine days in July - Waltonville, IL
  • Average sunshine days in July: 15.5 days

The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is May (13.8 days).

Average UV index in July
Waltonville, IL

Average UV index in July - Waltonville, 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
Waltonville, IL

Average cloud cover in July - Waltonville, IL
  • Average cloud cover in July: 29

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in July
Waltonville, IL

Average visibility in July - Waltonville, 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).

Waltonville, Illinois, USA

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