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 experiences a minor change to a pleasant 69.3°F (20.7°C) in average high-temperature during June, closely reflecting May. A marked drop from daytime peak temperatures to an average low-temperature of 46.4°F (8°C) is observed during the nights in June.

Humidity

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

Rainfall

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

Snowfall

May through October are months without snowfall.

Daylight

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

Sunshine

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

UV index

June and July, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 5 during June translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

What is the temperature in June?

In June, the average high-temperature and low-temperature are 69.3°F (20.7°C) and 46.4°F (8°C) respectively.

What is the average humidity in June?

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

How much does it rain in June?

In Sammamish, in June, it is raining for 10 days, with typically 0.75" (19mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 15h and 54min of daylight.

How many hours of daylight does Sammamish have in June?

In June, the average day length is 15h and 55min.

When is the sunrise / sunset in June?

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.

How many hours of sunshine does Sammamish have in June?

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

What is the month with the highest UV index?

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

What is the UV index intensity in June?

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 the Sun's UV radiation.
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Sammamish, Washington, USA

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