July weather forecast
Glenallen, MD

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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.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

Glenallen's July weather reaches an average high of 87.3°F (30.7°C) and an average low of 68.7°F (20.4°C), making it the warmest month.

How hot is it in July?

An average high-temperature, in July, in Glenallen, is 87.3°F (30.7°C) and the average low-temperature is 68.7°F (20.4°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 98.6°F (37°C).

What is the least humid month?

July is the least humid month, with an average relative humidity of 70%.

What is the average humidity in July?

The average relative humidity in July is 70%.

How many days does it rain in July?

In Glenallen, in July, during 17.5 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Glenallen have in July?

In July, the average day length is 14h and 35min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:46 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:20 pm EDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.8h of sunshine.

How long on average sun shines in July in Glenallen?

In July, the average sunshine duration is 10.8h.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Glenallen.

What is the UV index reading in July?

In Glenallen, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Glenallen, MD

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in July - Glenallen, MD
  • 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 month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in July
Glenallen, MD

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 - 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 - 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 - 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).

Glenallen, Maryland, USA

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