July 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 July

July is recognized as the hottest month in Winthrop, with temperatures soaring to a monthly high of 75.6°F (24.2°C) and not dipping below 46.9°F (8.3°C). The heat makes its presence in the sunshine hours as well, which hover around 11.8 hours. Distinctly lower rainfall and humidity build a dry atmosphere, adding to the heat of the summer days. Spacious landscapes under the clear blue sky make for a striking sight, a trend which continues into August.

Temperature

In Winthrop, stepping into July brings a temperature increase, moving up from June's comfortable 64.6°F (18.1°C) to a warm 75.6°F (24.2°C). The significant decline in Winthrop's temperature, from day to night, averages of 46.9°F (8.3°C) in July.

Humidity

July and August, with an average relative humidity of 53%, are the least humid months.

Rainfall

The month with the least rainfall is July, when the rain falls for 6.8 days and typically collects 0.31" (8mm) of precipitation.

Snowfall

May through August are months without snowfall.

Daylight

The average length of the day in July is 15h and 38min.
On the first day of the month, sunrise is at 5:03 am and sunset at 9:05 pm. On the last day of July, sunrise is at 5:35 am and sunset at 8:38 pm PDT.

Sunshine

In Winthrop, the average sunshine in July is 11.8h.

UV index

The month with the highest UV index is July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during July leads to these advisories:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in July?

In Winthrop, 75.6°F (24.2°C) is the average high-temperature and 46.9°F (8.3°C) is the average low-temperature during July.

What are the least humid months?

The months with the lowest humidity are July and August, with an average relative humidity of 53%.

What is the average humidity in July?

The average relative humidity in July is 53%.

What is the driest month?

The month with the least rainfall in Winthrop, Washington, is July, when the rain falls for 6.8 days and typically collects 0.31" (8mm) of precipitation.

How many days does it rain in July in Winthrop?

In Winthrop, during July, the rain falls for 6.8 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow in Winthrop?

May through August are months without snowfall.

How many hours of daylight does Winthrop have in July?

In July, the average day length is 15h and 38min.

When is the sunrise / sunset in July in Winthrop?

In July, on the first day of the month, sunrise is at 5:03 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:38 pm PDT.

How long on average sun shines in July?

In July, the average sunshine duration in Winthrop is 11.8h.

When is the highest UV index in Winthrop?

July is the month with the highest UV index, with an average maximum UV index of 6.

What is the UV index intensity in July?

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to 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 July
Winthrop, WA

Average temperature in July - Winthrop, WA
  • Average high temperature in July: 75.6°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 July: 46.9°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 July
Winthrop, WA

Average pressure in July - Winthrop, WA
  • Average pressure in July: 29.97"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 July
Winthrop, WA

Average wind speed in July - Winthrop, WA
  • Average wind speed in July: 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 July
Winthrop, WA

Average humidity in July - Winthrop, WA
  • Average humidity in July: 53%

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 July
Winthrop, WA

Average rainfall in July - Winthrop, WA
  • Average rainfall in July: 0.31"

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 July
Winthrop, WA

Average rainfall days in July - Winthrop, WA
  • Average rainfall days in July: 6.8 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 July
Winthrop, WA

Average snowfall in July - Winthrop, WA
  • Average snowfall in July: 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 July
Winthrop, WA

Average snowfall days in July - Winthrop, WA
  • Average snowfall days in July: 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 July /
Average sunshine in July
Winthrop, WA

Average daylight in July / Average sunshine in July - Winthrop, WA
  • Average daylight in July: 15h and 4min

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 July: 11h and 5min

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 July
Winthrop, WA

Average sunshine days in July - Winthrop, WA
  • Average sunshine days in July: 22 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 July
Winthrop, WA

Average UV index in July - Winthrop, WA
  • Average UV index in July: 6

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 July
Winthrop, WA

Average cloud cover in July - Winthrop, WA
  • Average cloud cover in July: 16

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 July
Winthrop, WA

Average visibility in July - Winthrop, WA
  • Average visibility in July: 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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