June weather forecastUpper Marlboro, MD
June
Weather in June
The first month of the summer, June, is still a warm month in Upper Marlboro, Maryland, with an average temperature varying between 81.5°F (27.5°C) and 64.9°F (18.3°C).Temperature
A soft shift in the average high-temperature is noticeable in June, transitioning from 73.6°F (23.1°C) in May to a still moderately hot 81.5°F (27.5°C). During the month of June, the temperature falls to an average of 64.9°F (18.3°C).Heat index
The heat index value for June is appraised at a tropical 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
The average relative humidity in June is 75%.Rainfall
In June, the rain falls for 15.8 days. Throughout June, 2.91" (74mm) of precipitation is accumulated. In Upper Marlboro, 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.Daylight
With an average of 14h and 48min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:43 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:36 pm EDT.
Sunshine
The average sunshine in June is 10.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 6 in June translates into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Upper Marlboro, MD
- Average high temperature in June: 81.5°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 June: 64.9°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).
Average pressure in June
Upper Marlboro, MD
- Average pressure in June: 29.94"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 June
Upper Marlboro, MD
- Average wind speed in June: 6.2mph
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).
Average humidity in June
Upper Marlboro, MD
- Average humidity in June: 75%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, March and April (72%).
Average rainfall in June
Upper Marlboro, MD
- Average rainfall in June: 2.91"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in June
Upper Marlboro, MD
- Average rainfall days in June: 15.8 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).
Average snowfall in June
Upper Marlboro, MD
- Average snowfall in June: 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").
Average snowfall days in June
Upper Marlboro, 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
Upper Marlboro, MD
- Average daylight in June: 14h and 48min
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 June: 10h and 24min
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).
Average sunshine days in June
Upper Marlboro, MD
- Average sunshine days in June: 11.6 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).
Average UV index in June
Upper Marlboro, 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
Upper Marlboro, MD
- Average cloud cover in June: 31
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in June
Upper Marlboro, MD
- Average visibility in June: 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).
