July weather forecast
Adelphi, MD

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Weather in July

July in Adelphi, Maryland, is a hot summer month, with an average temperature varying between 87.4°F (30.8°C) and 69.6°F (20.9°C).

Temperature

July is the warmest month of the year, registering average temperatures as high as 87.4°F (30.8°C) and as low as 69.6°F (20.9°C).

Heat index

For most parts of July, the heat index is evaluated at a torrid 98.6°F (37°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. 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. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The least humid month in Adelphi is July, with an average relative humidity of 69%.

Rainfall

In July, in Adelphi, the rain falls for 15.8 days. Throughout July, 2.99" (76mm) of precipitation is accumulated. Throughout the year, in Adelphi, there are 154.8 rainfall days, and 30.28" (769mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Adelphi.

Daylight

In July, the average length of the day is 14h and 35min.
On the first day of July in Adelphi, sunrise is at 5:46 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:20 pm EDT.

Sunshine

July has the most sunshine of the year in Adelphi, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index in Adelphi, Maryland, are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 in July translates into these instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 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. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What month is the hottest in Adelphi?

July is the warmest month in Adelphi, Maryland, with the temperature often reaching an average high of 87.4°F (30.8°C) and an average low of 69.6°F (20.9°C).

Is it hot in Adelphi during July?

An average high-temperature, in July, in Adelphi, is 87.4°F (30.8°C) and the average low-temperature is 69.6°F (20.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in July is evaluated at 98.6°F (37°C).

What is the least humid month in Adelphi?

July is the least humid month in Adelphi, with an average relative humidity of 69%.

What is the average humidity in July in Adelphi?

The average relative humidity in July in Adelphi is 69%.

How much does it rain in Adelphi in July?

In Adelphi, Maryland, in July, during 15.8 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

When it does not snow in Adelphi?

May through October are months without snowfall in Adelphi.

What is the average length of the day in July in Adelphi?

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

When are sunrise and sunset in July in Adelphi?

On the first day of July in Adelphi, sunrise is at 5:46 am and sunset at 8:37 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 in Adelphi?

July has the most sunshine of the year in Adelphi, with an average of 10.6h of sunshine.

How long on average sun shines in July in Adelphi?

In Adelphi, Maryland, the average sunshine duration in July is 10.6h.

What is the month with the highest UV index in Adelphi?

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

How high is the UV index in July in Adelphi?

In Adelphi, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to 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
Adelphi, MD

Average temperature in July - Adelphi, MD
  • Average high temperature in July: 87.4°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in July: 69.6°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

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Average pressure in July
Adelphi, MD

Average pressure in July - Adelphi, 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).

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Average wind speed in July
Adelphi, MD

Average wind speed in July - Adelphi, MD
  • Average wind speed in July: 5.3mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in July
Adelphi, MD

Average humidity in July - Adelphi, MD
  • Average humidity in July: 69%

The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in July
Adelphi, MD

Average rainfall in July - Adelphi, MD
  • Average rainfall in July: 2.99"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days in July
Adelphi, MD

Average rainfall days in July - Adelphi, MD
  • Average rainfall days in July: 15.8 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in July
Adelphi, MD

Average snowfall in July - Adelphi, MD
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Adelphi, MD

Average snowfall days in July - Adelphi, 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
Adelphi, MD

Average daylight in July / Average sunshine in July - Adelphi, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in July
Adelphi, MD

Average sunshine days in July - Adelphi, MD
  • Average sunshine days in July: 13.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).

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Average UV index in July
Adelphi, MD

Average UV index in July - Adelphi, 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
Adelphi, MD

Average cloud cover in July - Adelphi, MD
  • Average cloud cover in July: 32

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in July
Adelphi, MD

Average visibility in July - Adelphi, 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).

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Adelphi, Maryland, USA

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