June weather forecast
Mount Rainier, MD

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Weather in June

June introduces the first flush of summer in Mount Rainier, marked by an increase in maximum temperature to 81.9°F (27.7°C). The usual weather in June revolves around longer daylight hours and high amounts of sunshine. Unlike the heavier rainfall in May, June usually has drier conditions. The decrease in rain during June leads to lower pressure in the atmosphere compared to that of May. Moving forward, July's weather will likely be drier and hotter, which also corresponds with the trend seen from June to July.

Temperature

Mount Rainier in June denotes a subtle temperature transition, adjusting from an average high of 73.9°F (23.3°C) in May to a still moderately hot 81.9°F (27.7°C). The average temperature during June nights in Mount Rainier is registered at a refreshing 64.6°F (18.1°C).

Heat index

During June, the heat index is evaluated at a hot 87.8°F (31°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. 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 particularly meaningful for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

The average relative humidity in June in Mount Rainier is 74%.

Rainfall

In Mount Rainier, during June, the rain falls for 15.5 days and regularly aggregates up to 2.8" (71mm) of precipitation. In Mount Rainier, during the entire year, the rain falls for 157.9 days and collects up to 31.14" (791mm) of precipitation.

Snowfall

May through November are months without snowfall.

Daylight

With an average of 14h and 54min of daylight, June has the longest days of the year in Mount Rainier.
On the first day of June in Mount Rainier, sunrise is at 5:43 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:37 pm EDT.

Sunshine

In June, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In June, an average UV index of 6 transforms into the following instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the temperature in June in Mount Rainier?

The high-temperature, in June, in Mount Rainier, records 81.9°F (27.7°C), while the low-temperature is 64.6°F (18.1°C). In June, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in June in Mount Rainier?

In June, the average relative humidity in Mount Rainier is 74%.

How many days does it rain in June in Mount Rainier?

In Mount Rainier, in June, during 15.5 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow in Mount Rainier?

May through November are months without snowfall.

When are the longest days in Mount Rainier?

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

How many hours of daylight does Mount Rainier have in June?

In June, the average day length is 14h and 52min.

What time are sunrise and sunset in June in Mount Rainier?

In June, on the first day of the month, sunrise is at 5:43 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:37 pm EDT.

How long on average sun shines in June in Mount Rainier?

The average sunshine duration in June is 10.3h.

What are the months with the highest UV index in Mount Rainier?

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

What is the UV index reading in June in Mount Rainier?

In Mount Rainier, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health threat 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 June
Mount Rainier, MD

Average temperature in June - Mount Rainier, MD
  • Average high temperature in June: 81.9°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 (39.9°F).

  • Average low temperature in June: 64.6°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in June
Mount Rainier, MD

Average pressure in June - Mount Rainier, 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).

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Average wind speed in June
Mount Rainier, MD

Average wind speed in June - Mount Rainier, MD
  • Average wind speed in June: 6.2mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in June
Mount Rainier, MD

Average humidity in June - Mount Rainier, MD
  • Average humidity in June: 74%

The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).

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Average rainfall in June
Mount Rainier, MD

Average rainfall in June - Mount Rainier, MD
  • Average rainfall in June: 2.8"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").

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Average rainfall days in June
Mount Rainier, MD

Average rainfall days in June - Mount Rainier, MD
  • Average rainfall days in June: 15.5 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in June
Mount Rainier, MD

Average snowfall in June - Mount Rainier, MD
  • Average snowfall in June: 0"

The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in June
Mount Rainier, MD

Average snowfall days in June - Mount Rainier, MD
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (4.1 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 June /
Average sunshine in June
Mount Rainier, MD

Average daylight in June / Average sunshine in June - Mount Rainier, 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 2min

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 0min).

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Average sunshine days in June
Mount Rainier, MD

Average sunshine days in June - Mount Rainier, MD
  • Average sunshine days in June: 13 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in June
Mount Rainier, MD

Average UV index in June - Mount Rainier, 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 and December (UV index 2).

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Average cloud cover in June
Mount Rainier, MD

Average cloud cover in June - Mount Rainier, MD
  • Average cloud cover in June: 33

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in June
Mount Rainier, MD

Average visibility in June - Mount Rainier, 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).

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Mount Rainier, Maryland, USA

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