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
Saint David's July weather, with an average high temperature of 82.8°F (28.2°C) and an average low temperature of 65.8°F (18.8°C), tends to be the warmest of the year.Heat index
During July, the heat index is computed to be a hot 91.4°F (33°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
July is the most humid month in Saint David, with an average relative humidity of 83%.Rainfall
In Saint David, in July, during 15.8 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Saint David, during the entire year, the rain falls for 131.7 days and collects up to 22.48" (571mm) of precipitation.Snowfall
In Saint David, snow does not fall in May through September.Daylight
The average length of the day in July is 14h and 44min.On the first day of July, sunrise is at 5:33 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 8:15 pm CDT.
Sunshine
June and July, with an average of 10.1h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 6 in July translates into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the hottest time of year in Saint David?
How hot does it get in Saint David in July?
What is the most humid month in Saint David?
What is the average humidity in July in Saint David?
How many days does it rain in July in Saint David?
When it does not snow in Saint David?
What is the average length of the day in July in Saint David?
When are sunrise and sunset in July in Saint David?
What is the month with the most sunshine in Saint David?
How long on average sun shines in July in Saint David?
When is the highest UV index in Saint David?
How high is the UV index in July in Saint David?
Average temperature in July
Saint David, IL
- Average high temperature in July: 82.8°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in July: 65.8°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in July
Saint David, IL
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Saint David, IL
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in July
Saint David, IL
- Average humidity in July: 83%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in July
Saint David, IL
- Average rainfall in July: 2.17"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.94").
Average rainfall days in July
Saint David, IL
- Average rainfall days in July: 15.8 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in July
Saint David, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Saint David, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (9.4 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 David, 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 18min).
- Average sunshine in July: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in July
Saint David, IL
- Average sunshine days in July: 11.7 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in July
Saint David, 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
Saint David, IL
- Average cloud cover in July: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in July
Saint David, 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).
Saint David, Illinois, USA
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