June weather forecastJefferson, MD

June

Weather in June

June, the first month of the summer in Jefferson, is also a moderately hot month, with an average temperature varying between 63.9°F (17.7°C) and 82.9°F (28.3°C).

Temperature

June's arrival brings a slight change in high-temperatures, adjusting from 74.8°F (23.8°C) in May to a still moderately hot 82.9°F (28.3°C). Jefferson anticipates an average minimum temperature of 63.9°F (17.7°C) in the month of June.

Heat index

For June, the heat index is evaluated at a hot 89.6°F (32°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

In June, the average relative humidity is 73%.

Rainfall

In June, the rain falls for 14.9 days. Throughout June, 2.6" (66mm) of precipitation is accumulated. In Jefferson, during the entire year, the rain falls for 161.2 days and collects up to 31.54" (801mm) of precipitation.

Snowfall

In Jefferson, snow does not fall in May through October.

Daylight

The month with the longest days is June, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:31 pm. On the last day of June, sunrise is at 5:46 am and sunset at 8:41 pm EDT.

Sunshine

In June, the average sunshine is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during June translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During June, Jefferson experiences an average high-temperature of 82.9°F (28.3°C) and a low-temperature of 63.9°F (17.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in June is evaluated at 89.6°F (32°C).

In Jefferson, the average relative humidity in June is 73%.

In Jefferson, during June, the rain falls for 14.9 days and regularly aggregates up to 2.6" (66mm) of precipitation.

May through October are months without snowfall.

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

In Jefferson, the average day length in June is 14h and 54min.

On the first day of June, sunrise is at 5:44 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:41 pm EDT.

In Jefferson, the average sunshine duration in June is 10.4h.

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

In June, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M June J A S O N D

May

June

Jul

Average high temperature

74.8°F

82.9°F

87.6°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.6mph

6.2mph

5.3mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

18.2

14.9

16.8

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.4

10.9

Average UV index

Average cloud cover

Average visibility

Average temperature in June
Jefferson, MD

Average high temperature in June: 82.9°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (40.5°F).

Average low temperature in June: 63.9°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in June
Jefferson, 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
Jefferson, MD

Average wind speed in June: 5.7mph

The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in June
Jefferson, MD

Average humidity in June: 73%

The month with the highest relative humidity is October (77%).
The months with the lowest relative humidity are April and July (71%).

Average rainfall in June
Jefferson, MD

Average rainfall in June: 2.6"

The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in June
Jefferson, MD

Average rainfall days in June: 14.9 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (8.9 days).

Average snowfall in June
Jefferson, MD

Average snowfall in June: 0"

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in June
Jefferson, MD

Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (4.9 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
Jefferson, MD

Average daylight in June: 14h and 54min

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 24min).

Average sunshine in June: 10h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).

Average sunshine days in June
Jefferson, MD

Average sunshine days in June: 13 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in June
Jefferson, 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
Jefferson, MD

Average cloud cover in June: 32

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in June
Jefferson, 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).