June weather forecast
Winthrop, WA

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A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington
A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington

Weather in June

June brings the shift towards warmer temperatures marking the onset of summer in Winthrop. Average temperatures range between a high of 64.6°F (18.1°C) and a low of 40.5°F (4.7°C). As summer steps in, so does abundant sunshine, with an average of 16.1 daylight hours and 11.4 hours of sunshine. Outdoor activities become more enjoyable, with clouds slowly retreating and the town basking under the clear sky. The mild weather of June soon gears up for the hotter days of July.

Temperature

The start of June signals a slight increase in the average high-temperature, moving from a mild 58.3°F (14.6°C) in May to a still refreshing 64.6°F (18.1°C). Nightly readings in June display a noticeable downturn from daily highs, with the average low-temperature registering an icy 40.5°F (4.7°C).

Humidity

The average relative humidity in June is 64%.

Rainfall

In Winthrop, during June, the rain falls for 12.5 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, in Winthrop, Washington, there are 142.6 rainfall days, and 17.91" (455mm) of precipitation is accumulated.

Snowfall

May through August are months without snowfall.

Daylight

The month with the longest days is June, with an average of 16h and 6min of daylight.
On the first day of the month, sunrise is at 5:02 am and sunset at 8:54 pm. On the last day of June, sunrise is at 5:03 am and sunset at 9:06 pm PDT.

Sunshine

In Winthrop, the average sunshine in June is 11.4h.

UV index

The average daily maximum UV index in June is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In June, the UV index of 4 transforms into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in June?

In June, in Winthrop, the average high-temperature is 64.6°F (18.1°C), and the average low-temperature is 40.5°F (4.7°C).

What is the average humidity in June?

In Winthrop, the average relative humidity in June is 64%.

How much does it rain in June?

In Winthrop, in June, it is raining for 12.5 days, with typically 1.18" (30mm) of accumulated precipitation.

When it does not snow?

In Winthrop, snow does not fall in May through August.

When are the longest days?

June has the longest days of the year, with an average of 16h and 6min of daylight.

What is the average length of the day in June?

In June, the average day length is 16h and 3min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 5:02 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 9:06 pm PDT.

How many hours of sunshine does Winthrop have in June?

In June, the average sunshine duration is 11.4h.

What is the UV index reading in June?

The average daily maximum UV index in June is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Winthrop, WA

Average temperature in June - Winthrop, WA
  • Average high temperature in June: 64.6°F

The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).

  • Average low temperature in June: 40.5°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).

Average pressure in June
Winthrop, WA

Average pressure in June - Winthrop, WA
  • Average pressure in June: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).

Average wind speed in June
Winthrop, WA

Average wind speed in June - Winthrop, WA
  • Average wind speed in June: 5mph

The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).

Average humidity in June
Winthrop, WA

Average humidity in June - Winthrop, WA
  • Average humidity in June: 64%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).

Average rainfall in June
Winthrop, WA

Average rainfall in June - Winthrop, WA
  • Average rainfall in June: 1.18"

The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in June
Winthrop, WA

Average rainfall days in June - Winthrop, WA
  • Average rainfall days in June: 12.5 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).

Average snowfall in June
Winthrop, WA

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

The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days in June
Winthrop, WA

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

The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in June / Average sunshine in June - Winthrop, WA
  • Average daylight in June: 16h and 1min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in June: 11h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in June
Winthrop, WA

Average sunshine days in June - Winthrop, WA
  • Average sunshine days in June: 13.9 days

The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).

Average UV index in June
Winthrop, WA

Average UV index in June - Winthrop, WA
  • Average UV index in June: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).

Average cloud cover in June
Winthrop, WA

Average cloud cover in June - Winthrop, WA
  • Average cloud cover in June: 28

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in June
Winthrop, WA

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

Winthrop, Washington, USA

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