July weather forecast
Thornton, WA

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Weather in July

July in Thornton, Washington, is a warm summer month, with an average temperature fluctuating between 83.3°F (28.5°C) and 57°F (13.9°C).

Temperature

As Thornton, Washington, welcomes July, the average high-temperature sees a rise, transitioning from a pleasant 71.1°F (21.7°C) in June to a moderately hot 83.3°F (28.5°C). Thornton witnesses a consistent, sharp contrast from the daytime highs, with an average low-temperature of 57°F (13.9°C) throughout July.

Heat index

For July, the heat index is appraised at 82.4°F (28°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

The average relative humidity in July is 42%.

Rainfall

The month with the least rainfall is July, when the rain falls for 4.5 days and typically collects 0.28" (7mm) of precipitation.

Snowfall

June through August are months without snowfall.

Daylight

In July, the average length of the day is 15h and 28min.
On the first day of the month, sunrise is at 4:58 am and sunset at 8:48 pm. On the last day of July, sunrise is at 5:28 am and sunset at 8:23 pm PDT.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine.

UV index

July is the month with the highest UV index, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In July, the maximum UV index of 7 suggests these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. 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. Opt for tightly woven and loose clothing to enhance protection from the Sun.

Frequently asked questions

Is it hot during July?

In Thornton, 83.3°F (28.5°C) is the average high-temperature and 57°F (13.9°C) is the average low-temperature during July. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in July is appraised at 82.4°F (28°C).

What is the average humidity in July?

In Thornton, the average relative humidity in July is 42%.

What is the driest month?

July is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.28" (7mm) of precipitation.

How many days does it rain in July?

In Thornton, during July, the rain falls for 4.5 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When it does not snow?

In Thornton, snow does not fall in June through August.

How many hours of daylight does Thornton have in July?

In Thornton, the average day length in July is 15h and 28min.

When is the sunrise / sunset in July?

On the first day of July in Thornton, sunrise is at 4:58 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:23 pm PDT.

What is the month with the most sunshine?

July and August, with an average of 12h of sunshine, are months with the most sunshine.

How long on average sun shines in July?

In Thornton, the average sunshine duration in July is 12h.

What is the month with the highest UV index?

With an average maximum UV index of 7, July is the month with the highest UV index.

What is the UV index reading in July?

In July, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high hazard to health 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 July
Thornton, WA

Average temperature in July - Thornton, WA
  • Average high temperature in July: 83.3°F

The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in July: 57°F

The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).

Average pressure in July
Thornton, WA

Average pressure in July - Thornton, WA
  • Average pressure in July: 29.92"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in July
Thornton, WA

Average wind speed in July - Thornton, WA
  • Average wind speed in July: 6mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in July
Thornton, WA

Average humidity in July - Thornton, WA
  • Average humidity in July: 42%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (37%).

Average rainfall in July
Thornton, WA

Average rainfall in July - Thornton, WA
  • Average rainfall in July: 0.28"

The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is July (0.28").

Average rainfall days in July
Thornton, WA

Average rainfall days in July - Thornton, WA
  • Average rainfall days in July: 4.5 days

The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is July (4.5 days).

Average snowfall in July
Thornton, WA

Average snowfall in July - Thornton, WA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (6.69").
The months with the least snowfall are June, July and August (0").

Average snowfall days in July
Thornton, WA

Average snowfall days in July - Thornton, WA
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are February and December (9.6 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in July /
Average sunshine in July
Thornton, WA

Average daylight in July / Average sunshine in July - Thornton, WA
  • Average daylight in July: 15h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in July: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).

Average sunshine days in July
Thornton, WA

Average sunshine days in July - Thornton, WA
  • Average sunshine days in July: 24.6 days

The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is February (12.2 days).

Average UV index in July
Thornton, WA

Average UV index in July - Thornton, WA
  • Average UV index in July: 7

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in July
Thornton, WA

Average cloud cover in July - Thornton, WA
  • Average cloud cover in July: 11

The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 11).

Average visibility in July
Thornton, WA

Average visibility in July - Thornton, WA
  • Average visibility in July: 6mi

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

Thornton, Washington, USA

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