July weather forecastGlenallen, MD
July
Weather in July
July is a tropical summer month in Glenallen, Maryland, with an average temperature fluctuating between 87.3°F (30.7°C) and 68.7°F (20.4°C).Temperature
With average high and low temperatures of 87.3°F (30.7°C) and 68.7°F (20.4°C) respectively, July is Glenallen's warmest month.Heat index
During July, the heat index is appraised at a torrid 98.6°F (37°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
With an average relative humidity of 70%, July is the least humid month.Rainfall
In Glenallen, Maryland, in July, it is raining for 17.5 days, with typically 3.23" (82mm) of accumulated precipitation. In Glenallen, during the entire year, the rain falls for 160.9 days and collects up to 32.99" (838mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In July, the average length of the day is 14h and 35min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:38 pm. On the last day of July, sunrise is at 6:08 am and sunset at 8:20 pm EDT.
Sunshine
July has the most sunshine of the year, with an average of 10.8h 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 value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 6 during July translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Glenallen, MD
- Average high temperature in July: 87.3°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in July: 68.7°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in July
Glenallen, MD
- 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
Glenallen, MD
- Average wind speed in July: 5.2mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in July
Glenallen, MD
- Average humidity in July: 70%
The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in July
Glenallen, MD
- Average rainfall in July: 3.23"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in July
Glenallen, MD
- Average rainfall days in July: 17.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in July
Glenallen, MD
- Average snowfall in July: 0"
The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Glenallen, MD
- Average snowfall days in July: 0 days
The months with the highest number of snowfall days are January and February (5.1 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
Glenallen, 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 48min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in July
Glenallen, MD
- Average sunshine days in July: 11 days
The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).
Average UV index in July
Glenallen, 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, November and December (UV index 2).
Average cloud cover in July
Glenallen, MD
- Average cloud cover in July: 31
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in July
Glenallen, MD
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
