July weather forecastCentreville, MD
July
Weather in July
July, like June, in Centreville, Maryland, is a moderately hot summer month, with an average temperature varying between 70°F (21.1°C) and 84.4°F (29.1°C).Temperature
The average temperatures reach their apex in July, averaging 84.4°F (29.1°C) at the high end and 70°F (21.1°C) at the low end.Heat index
For most parts of July, the heat index is estimated at a tropical 93.2°F (34°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
The average relative humidity in July is 77%.Rainfall
In July, the rain falls for 17.3 days. Throughout July, 3.74" (95mm) of precipitation is accumulated. Throughout the year, there are 154.8 rainfall days, and 30.59" (777mm) of precipitation is accumulated.Snowfall
In Centreville, snow does not fall in May through October.Daylight
In July, the average length of the day is 14h and 35min.On the first day of the month, sunrise is at 5:42 am and sunset at 8:34 pm. On the last day of July, sunrise is at 6:04 am and sunset at 8:16 pm EDT.
Sunshine
The month with the most sunshine is July, with an average of 10.7h 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 health hazard from unsafe exposure to UV radiation for average individuals.Note: In July, the maximum UV index of 6 transforms into these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Centreville, MD
- Average high temperature in July: 84.4°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in July: 70°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in July
Centreville, MD
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in July
Centreville, MD
- Average wind speed in July: 6.2mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in July
Centreville, MD
- Average humidity in July: 77%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are April and November (73%).
Average rainfall in July
Centreville, MD
- Average rainfall in July: 3.74"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in July
Centreville, MD
- Average rainfall days in July: 17.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in July
Centreville, MD
- Average snowfall in July: 0"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Centreville, MD
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Centreville, MD
- Average daylight in July: 14h and 36min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in July
Centreville, MD
- Average sunshine days in July: 10.6 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in July
Centreville, MD
- 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 and December (UV index 2).
Average cloud cover in July
Centreville, MD
- Average cloud cover in July: 30
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in July
Centreville, MD
- 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).
