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
With an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 65.5°F (18.6°C), July is the warmest month.Heat index
The heat index value for July is appraised at a fiery hot 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The least humid month in Saint Louis, Virginia, is July, with an average relative humidity of 73%.Rainfall
In Saint Louis, in July, during 16.8 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. In Saint Louis, during the entire year, the rain falls for 162.2 days and collects up to 31.1" (790mm) of precipitation.Snowfall
May through September are months without snowfall in Saint Louis.Daylight
In Saint Louis, Virginia, the average length of the day in July is 14h and 35min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:40 pm. On the last day of July, in Saint Louis, Virginia, sunrise is at 6:11 am and sunset at 8:23 pm EDT.
Sunshine
July has the most sunshine of the year in Saint Louis, with an average of 10.8h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Saint Louis. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not 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 Saint Louis?
Is it hot in Saint Louis during July?
What is the least humid month in Saint Louis?
What is the average humidity in July in Saint Louis?
How many days does it rain in July in Saint Louis?
When it does not snow in Saint Louis?
What is the average length of the day in July in Saint Louis?
What time are sunrise and sunset in July in Saint Louis?
What month has the most sunshine in Saint Louis?
How many hours of sunshine does Saint Louis have in July?
What are the months with the highest UV index in Saint Louis?
What is the UV index reading in July in Saint Louis?
Average temperature in July
Saint Louis, VA
- Average high temperature in July: 86.5°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in July: 65.5°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in July
Saint Louis, VA
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in July
Saint Louis, VA
- Average wind speed in July: 4.5mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in July
Saint Louis, VA
- Average humidity in July: 73%
The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in July
Saint Louis, VA
- Average rainfall in July: 2.99"
The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in July
Saint Louis, VA
- Average rainfall days in July: 16.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).
Average snowfall in July
Saint Louis, VA
- Average snowfall in July: 0"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Saint Louis, VA
- 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 and September (0 days).
Average daylight in July /
Average sunshine in July
Saint Louis, VA
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in July
Saint Louis, VA
- Average sunshine days in July: 11.8 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in July
Saint Louis, VA
- 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
Saint Louis, VA
- Average cloud cover in July: 30
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in July
Saint Louis, VA
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, May, September, October and December (5mi).
Saint Louis, Virginia, USA
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