July weather forecast
Upper Marlboro, MD

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Weather in July

July is a hot summer month in Upper Marlboro, Maryland, with an average temperature ranging between min 69.8°F (21°C) and max 86.7°F (30.4°C).

Temperature

July is Upper Marlboro's warmest month, registering average high temperatures of 86.7°F (30.4°C) and lows of 69.8°F (21°C).

Heat index

In July, the heat index is evaluated at a sweltering 98.6°F (37°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In July, the average relative humidity is 73%.

Rainfall

In Upper Marlboro, in July, during 17.8 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. In Upper Marlboro, Maryland, during the entire year, the rain falls for 164.8 days and collects up to 32.87" (835mm) of precipitation.

Snowfall

May through October are months without snowfall in Upper Marlboro.

Daylight

In Upper Marlboro, Maryland, the average length of the day in July is 14h and 34min.
On the first day of July, sunrise is at 5:45 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:18 pm EDT.

Sunshine

With an average of 11h of sunshine, July has the most sunshine of the year in Upper Marlboro.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: A maximum high UV index of 6 in July translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What month is the hottest in Upper Marlboro?

During the warmest month in Upper Marlboro, July, temperatures average a high of 86.7°F (30.4°C) and a low of 69.8°F (21°C).

How hot is it in Upper Marlboro in July?

During July, Upper Marlboro experiences an average high-temperature of 86.7°F (30.4°C) and a low-temperature of 69.8°F (21°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in July is evaluated at 98.6°F (37°C).

What is the average humidity in July in Upper Marlboro?

The average relative humidity in July in Upper Marlboro, Maryland, is 73%.

How many days does it rain in July in Upper Marlboro?

In July, in Upper Marlboro, Maryland, the rain falls for 17.8 days. Throughout July, 3.62" (92mm) of precipitation is accumulated.

When it does not snow in Upper Marlboro?

In Upper Marlboro, Maryland, snow does not fall in May through October.

How many hours of daylight does Upper Marlboro have in July?

The average day length in July in Upper Marlboro, Maryland, is 14h and 34min.

When are sunrise and sunset in July in Upper Marlboro?

In July, on the first day of the month, sunrise is at 5:45 am and sunset at 8:36 pm. On the last day of the month, in Upper Marlboro, Maryland, sunrise is at 6:07 am and sunset at 8:18 pm EDT.

What month has the most sunshine in Upper Marlboro?

The month with the most sunshine in Upper Marlboro, Maryland, is July, with an average of 11h of sunshine.

How long on average sun shines in July in Upper Marlboro?

The average sunshine duration in July is 11h.

When is the highest UV index in Upper Marlboro?

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

How high is the UV index in July in Upper Marlboro?

In July, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
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
Upper Marlboro, MD

Average temperature in July - Upper Marlboro, MD
  • Average high temperature in July: 86.7°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in July: 69.8°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

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Average pressure in July
Upper Marlboro, MD

Average pressure in July - Upper Marlboro, 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 (29.94"Hg).

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Average wind speed in July
Upper Marlboro, MD

Average wind speed in July - Upper Marlboro, MD
  • Average wind speed in July: 5.4mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).

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Average humidity in July
Upper Marlboro, MD

Average humidity in July - Upper Marlboro, MD
  • Average humidity in July: 73%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, March and April (72%).

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Average rainfall in July
Upper Marlboro, MD

Average rainfall in July - Upper Marlboro, MD
  • Average rainfall in July: 3.62"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in July
Upper Marlboro, MD

Average rainfall days in July - Upper Marlboro, MD
  • Average rainfall days in July: 17.8 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in July
Upper Marlboro, MD

Average snowfall in July - Upper Marlboro, MD
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Upper Marlboro, MD

Average snowfall days in July - Upper Marlboro, MD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Upper Marlboro, MD

Average daylight in July / Average sunshine in July - Upper Marlboro, MD
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 11h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in July
Upper Marlboro, MD

Average sunshine days in July - Upper Marlboro, MD
  • Average sunshine days in July: 10.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in July
Upper Marlboro, MD

Average UV index in July - Upper Marlboro, 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).

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Average cloud cover in July
Upper Marlboro, MD

Average cloud cover in July - Upper Marlboro, MD
  • Average cloud cover in July: 29

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in July
Upper Marlboro, MD

Average visibility in July - Upper Marlboro, 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).

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Upper Marlboro, Maryland, USA

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