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 registers as the month with the highest average temperatures, reaching 85.5°F (29.7°C) at its peak and 67.5°F (19.7°C) at the lowest.Heat index
The heat index in July is estimated at a fiery hot 96.8°F (36°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
The months with the highest humidity are May and July, with an average relative humidity of 79%.Rainfall
In Vandalia, in July, it is raining for 15.2 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, there are 142.4 rainfall days, and 28.98" (736mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Vandalia, the average length of the day in July is 14h and 37min.On the first day of July in Vandalia, sunrise is at 5:43 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 8:18 pm CDT.
Sunshine
In Vandalia, the average sunshine in July is 10.3h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 6 during July translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest?
How hot is it in July?
What are the most humid months?
What is the average humidity in July?
How much does it rain in July?
When it does not snow in Vandalia?
What is the average length of the day in July?
When is the sunrise / sunset in July?
How long on average sun shines in July?
What are the months with the highest UV index?
What is the UV index reading in July?
Average temperature in July
Vandalia, MO
- Average high temperature in July: 85.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (35.2°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 (21.9°F).
Average pressure in July
Vandalia, MO
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Vandalia, MO
- Average wind speed in July: 6.2mph
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 (6.2mph).
Average humidity in July
Vandalia, MO
- Average humidity in July: 79%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in July
Vandalia, MO
- Average rainfall in July: 2.76"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in July
Vandalia, MO
- Average rainfall days in July: 15.2 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in July
Vandalia, MO
- Average snowfall in July: 0"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Vandalia, MO
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.5 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
Vandalia, MO
- Average daylight in July: 14h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in July
Vandalia, MO
- Average sunshine days in July: 12.3 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in July
Vandalia, MO
- 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
Vandalia, MO
- Average cloud cover in July: 29
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in July
Vandalia, MO
- 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).
Vandalia, Missouri, USA
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