July weather forecast
Selby Grove, MD

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Weather in July

July, like June, in Selby Grove, Maryland, is another warm summer month, with an average temperature fluctuating between 85.6°F (29.8°C) and 70.7°F (21.5°C).

Temperature

With an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 70.7°F (21.5°C), July is the warmest month.

Heat index

Throughout July, the heat index is calculated to be a fiery hot 95°F (35°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in July is 73%.

Rainfall

In July, the rain falls for 15.5 days. Throughout July, 3.23" (82mm) of precipitation is accumulated. In Selby Grove, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Selby Grove, the average length of the day in July is 14h and 36min.
On the first day of July in Selby Grove, sunrise is at 5:44 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:18 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.9h 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 estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

The warmest period is July, when temperatures fluctuate between an average high of 85.6°F (29.8°C) and a low of 70.7°F (21.5°C).

How hot does it get in July?

During July, Selby Grove experiences an average high-temperature of 85.6°F (29.8°C) and a low-temperature of 70.7°F (21.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 95°F (35°C).

What is the average humidity in July?

In July, the average relative humidity is 73%.

How much does it rain in July?

In Selby Grove, in July, it is raining for 15.5 days, with typically 3.23" (82mm) of accumulated precipitation.

When it does not snow?

In Selby Grove, snow does not fall in May through October.

How many hours of daylight does Selby Grove have in July?

In Selby Grove, the average day length in July is 14h and 36min.

When are sunrise and sunset in July in Selby Grove?

In July, on the first day of the month, sunrise is at 5:44 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:18 pm EDT.

What month has the most sunshine in Selby Grove?

The month with the most sunshine is July, with an average of 10.9h of sunshine.

How long on average sun shines in July?

In Selby Grove, the average sunshine duration in July is 10.9h.

What are the months with the highest UV index in Selby Grove?

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

How high is the UV index in July?

In Selby Grove, Maryland, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from 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
Selby Grove, MD

Average temperature in July - Selby Grove, MD
  • Average high temperature in July: 85.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in July: 70.7°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in July
Selby Grove, MD

Average pressure in July - Selby Grove, 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).

Average wind speed in July
Selby Grove, MD

Average wind speed in July - Selby Grove, MD
  • Average wind speed in July: 6mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in July
Selby Grove, MD

Average humidity in July - Selby Grove, MD
  • Average humidity in July: 73%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

Average rainfall in July
Selby Grove, MD

Average rainfall in July - Selby Grove, MD
  • Average rainfall in July: 3.23"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in July
Selby Grove, MD

Average rainfall days in July - Selby Grove, MD
  • Average rainfall days in July: 15.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in July
Selby Grove, MD

Average snowfall in July - Selby Grove, MD
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Selby Grove, MD

Average snowfall days in July - Selby Grove, MD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.4 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
Selby Grove, MD

Average daylight in July / Average sunshine in July - Selby Grove, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in July
Selby Grove, MD

Average sunshine days in July - Selby Grove, MD
  • Average sunshine days in July: 13.8 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in July
Selby Grove, MD

Average UV index in July - Selby Grove, 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
Selby Grove, MD

Average cloud cover in July - Selby Grove, MD
  • Average cloud cover in July: 28

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in July
Selby Grove, MD

Average visibility in July - Selby Grove, 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).

Selby Grove, Maryland, USA

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