June weather forecast
Sammamish, WA

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Dense pine tree cover and houses in the town of Sammamish, Washington, in the Pine Lake area
Dense pine tree cover and houses in the town of Sammamish, Washington, in the Pine Lake area

Weather in June

Weather in June defines the commencement of summer in Sammamish, with temperatures reaching an average high of 69.3°F (20.7°C). The city welcomes its longest days in June, with daylight lasting approximately 15.9 hours providing plenty of time for outdoor activities. The absence of any snowfall, continuing from May, is a distinct summer attribute. Verse in June's weather is its relative low rainfall of just 0.75" (19mm), marking it as one of the driest months of the year. Meanwhile, the UV index reaching a high of 5 serves as a reminder to stress on sun protection while venturing outdoors.

Temperature

Sammamish's shift into June is marked by a subtle change to an agreeable 69.3°F (20.7°C) from May's 64.4°F (18°C) in temperature. A marked difference from the daytime temperatures, Sammamish's nighttime temperature falls to an average low of 46.4°F (8°C) in June.

Humidity

In Sammamish, Washington, the average relative humidity in June is 74%.

Rainfall

In Sammamish, during June, the rain falls for 10 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 136.7 rainfall days, and 13.39" (340mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Sammamish.

Daylight

With an average of 15h and 54min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 5:13 am and sunset at 8:58 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 9:09 pm PDT.

Sunshine

The average sunshine in June is 9.3h.

UV index

The months with the highest UV index in Sammamish are June and July, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 5 during June morphs into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What are the temperatures in Sammamish in June?

During June, Sammamish experiences an average high-temperature of 69.3°F (20.7°C) and a low-temperature of 46.4°F (8°C).

What is the average humidity in June in Sammamish?

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

How much does it rain in Sammamish in June?

In Sammamish, in June, during 10 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When it does not snow in Sammamish?

May through October are months without snowfall in Sammamish.

When are the longest days in Sammamish?

June has the longest days of the year in Sammamish, with an average of 15h and 54min of daylight.

What is the average length of the day in June in Sammamish?

The average day length in June in Sammamish, Washington, is 15h and 55min.

When are sunrise and sunset in June in Sammamish?

In June, on the first day of the month, sunrise is at 5:13 am and sunset at 8:58 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 9:09 pm PDT.

How long on average sun shines in June in Sammamish?

In Sammamish, the average sunshine duration in June is 9.3h.

When is the highest UV index in Sammamish?

The months with the highest UV index in Sammamish, Washington, are June and July, with an average maximum UV index of 5.

What is the UV index intensity in June in Sammamish?

In Sammamish, Washington, the average daily maximum UV index in June is 5. A UV Index value of 3 to 5 symbolizes a moderate 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 June
Sammamish, WA

Average temperature in June - Sammamish, WA
  • Average high temperature in June: 69.3°F

The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.3°F).

  • Average low temperature in June: 46.4°F

The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).

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Average pressure in June
Sammamish, WA

Average pressure in June - Sammamish, WA
  • Average pressure in June: 30.01"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in June
Sammamish, WA

Average wind speed in June - Sammamish, WA
  • Average wind speed in June: 3.6mph

The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).

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Average humidity in June
Sammamish, WA

Average humidity in June - Sammamish, WA
  • Average humidity in June: 74%

The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in June
Sammamish, WA

Average rainfall in June - Sammamish, WA
  • Average rainfall in June: 0.75"

The wettest month (with the highest rainfall) is December (1.85").
The driest months (with the least rainfall) are July and August (0.35").

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Average rainfall days in June
Sammamish, WA

Average rainfall days in June - Sammamish, WA
  • Average rainfall days in June: 10 days

The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is August (5.2 days).

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Average snowfall in June
Sammamish, WA

Average snowfall in June - Sammamish, WA
  • Average snowfall in June: 0"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in June
Sammamish, WA

Average snowfall days in June - Sammamish, WA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

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Average daylight in June /
Average sunshine in June
Sammamish, WA

Average daylight in June / Average sunshine in June - Sammamish, WA
  • Average daylight in June: 15h and 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in June: 9h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).

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Average sunshine days in June
Sammamish, WA

Average sunshine days in June - Sammamish, WA
  • Average sunshine days in June: 16.3 days

The month with the most sunshine days is August (24 days).
The month with the least sunshine days is November (13.5 days).

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Average UV index in June
Sammamish, WA

Average UV index in June - Sammamish, WA
  • Average UV index in June: 5

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in June
Sammamish, WA

Average cloud cover in June - Sammamish, WA
  • Average cloud cover in June: 44

The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in June
Sammamish, WA

Average visibility in June - Sammamish, WA
  • Average visibility in June: 6mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (5mi).

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Sammamish, Washington, USA

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