July weather forecast
Rosemary Hills, MD

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Weather in July

July in Rosemary Hills, Maryland, is a hot summer month, with temperature in the range of an average low of 69.6°F (20.9°C) and an average high of 87.4°F (30.8°C).

Temperature

Rosemary Hills's warmest temperatures are experienced in July, with average high temperatures of 87.4°F (30.8°C) and lows of 69.6°F (20.9°C).

Heat index

For most parts of July, the heat index is estimated at a sweltering 98.6°F (37°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture 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. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

With an average relative humidity of 69%, July is the least humid month in Rosemary Hills.

Rainfall

In Rosemary Hills, in July, during 15.8 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. Throughout the year, there are 154.8 rainfall days, and 30.28" (769mm) of precipitation is accumulated.

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 July, 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, with an average of 10.6h 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 health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 6 in July transforms into this advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

What time of the year is the hottest in Rosemary Hills?

Rosemary Hills's warmest weather arrives in July, when temperatures average a high of 87.4°F (30.8°C) and a low of 69.6°F (20.9°C).

How hot is it in Rosemary Hills in July?

In July, in Rosemary Hills, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 69.6°F (20.9°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 98.6°F (37°C).

What is the least humid month in Rosemary Hills?

With an average relative humidity of 69%, July is the least humid month in Rosemary Hills, Maryland.

What is the average humidity in July in Rosemary Hills?

In Rosemary Hills, Maryland, the average relative humidity in July is 69%.

How many days does it rain in July in Rosemary Hills?

In Rosemary Hills, Maryland, during July, the rain falls for 15.8 days and regularly aggregates up to 2.99" (76mm) of precipitation.

When it does not snow in Rosemary Hills?

May through October are months without snowfall in Rosemary Hills, Maryland.

How many hours of daylight does Rosemary Hills have in July?

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

When is the sunrise / sunset in July in Rosemary Hills?

In July, on the first day of the month, sunrise is at 5:46 am and sunset at 8:37 pm. On the last day of the month, in Rosemary Hills, sunrise is at 6:08 am and sunset at 8:20 pm EDT.

What month has the most sunshine in Rosemary Hills?

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

How long on average sun shines in July in Rosemary Hills?

The average sunshine duration in July in Rosemary Hills is 10.6h.

What is the month with the highest UV index in Rosemary Hills?

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 Rosemary Hills?

In July, the average daily maximum UV index in Rosemary Hills, Maryland, is 6. A UV Index 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
Rosemary Hills, MD

Average temperature in July - Rosemary Hills, 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
Rosemary Hills, MD

Average pressure in July - Rosemary Hills, 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
Rosemary Hills, MD

Average wind speed in July - Rosemary Hills, 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
Rosemary Hills, MD

Average humidity in July - Rosemary Hills, 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
Rosemary Hills, MD

Average rainfall in July - Rosemary Hills, 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
Rosemary Hills, MD

Average rainfall days in July - Rosemary Hills, 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
Rosemary Hills, MD

Average snowfall in July - Rosemary Hills, 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
Rosemary Hills, MD

Average snowfall days in July - Rosemary Hills, 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
Rosemary Hills, MD

Average daylight in July / Average sunshine in July - Rosemary Hills, 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
Rosemary Hills, MD

Average sunshine days in July - Rosemary Hills, 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
Rosemary Hills, MD

Average UV index in July - Rosemary Hills, 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
Rosemary Hills, MD

Average cloud cover in July - Rosemary Hills, 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
Rosemary Hills, MD

Average visibility in July - Rosemary Hills, 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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Rosemary Hills, Maryland, USA

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