June weather forecast
Adelphi, MD

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Weather in June

June, the first month of the summer in Adelphi, is still a warm month, with an average temperature fluctuating between 64.4°F (18°C) and 82.2°F (27.9°C).

Temperature

The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's 74.3°F (23.5°C) to a still moderately hot 82.2°F (27.9°C). Throughout June, an average low-temperature of 64.4°F (18°C) is experienced.

Heat index

In June, the average heat index is computed to be a hot 87.8°F (31°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'apparent temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In Adelphi, the average relative humidity in June is 72%.

Rainfall

In Adelphi, in June, it is raining for 15.2 days, with typically 2.48" (63mm) of accumulated precipitation. In Adelphi, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

June has the longest days of the year, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:43 am and sunset at 8:28 pm. On the last day of June, in Adelphi, sunrise is at 5:45 am and sunset at 8:37 pm EDT.

Sunshine

In Adelphi, the average sunshine in June is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 during June translates into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What are June temperatures in Adelphi?

During June, Adelphi experiences an average high-temperature of 82.2°F (27.9°C) and a low-temperature of 64.4°F (18°C). In June, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in June?

The average relative humidity in June is 72%.

How many days does it rain in June?

In Adelphi, in June, it is raining for 15.2 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

When are the longest days in Adelphi?

June has the longest days of the year, with an average of 14h and 54min of daylight.

How many hours of daylight does Adelphi have in June?

The average day length in June in Adelphi is 14h and 52min.

What time are sunrise and sunset in June?

In June, on the first day of the month, sunrise is at 5:43 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:37 pm EDT.

How many hours of sunshine does Adelphi have in June?

In Adelphi, the average sunshine duration in June is 10h.

What is the month with the highest UV index?

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 June?

In June, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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 June
Adelphi, MD

Average temperature in June - Adelphi, MD
  • Average high temperature in June: 82.2°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 June: 64.4°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).

Average pressure in June
Adelphi, MD

Average pressure in June - Adelphi, MD
  • Average pressure in June: 29.95"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 June
Adelphi, MD

Average wind speed in June - Adelphi, MD
  • Average wind speed in June: 6mph

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).

Average humidity in June
Adelphi, MD

Average humidity in June - Adelphi, MD
  • Average humidity in June: 72%

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

Average rainfall in June
Adelphi, MD

Average rainfall in June - Adelphi, MD
  • Average rainfall in June: 2.48"

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

Average rainfall days in June
Adelphi, MD

Average rainfall days in June - Adelphi, MD
  • Average rainfall days in June: 15.2 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).

Average snowfall in June
Adelphi, MD

Average snowfall in June - Adelphi, MD
  • Average snowfall in June: 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").

Average snowfall days in June
Adelphi, MD

Average snowfall days in June - Adelphi, MD
  • Average snowfall days in June: 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).

Average daylight in June /
Average sunshine in June
Adelphi, MD

Average daylight in June / Average sunshine in June - Adelphi, MD
  • Average daylight in June: 14h and 5min

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 June: 10h and 0min

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).

Average sunshine days in June
Adelphi, MD

Average sunshine days in June - Adelphi, MD
  • Average sunshine days in June: 13.3 days

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

Average UV index in June
Adelphi, MD

Average UV index in June - Adelphi, MD
  • Average UV index in June: 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 June
Adelphi, MD

Average cloud cover in June - Adelphi, MD
  • Average cloud cover in June: 34

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

Average visibility in June
Adelphi, MD

Average visibility in June - Adelphi, MD
  • Average visibility in June: 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).

Adelphi, Maryland, USA

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