July weather forecast
Dayton, WA

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Weather in July

July is a moderately hot summer month in Dayton, Washington, with an average temperature varying between 83.5°F (28.6°C) and 58.6°F (14.8°C).

Temperature

Dayton sees a rise in temperature during July, with average high-temperatures transitioning from a pleasant 72.1°F (22.3°C) in June to a warm 83.5°F (28.6°C). Dayton registers a pronounced decline from daytime peak temperatures, averaging a mild 58.6°F (14.8°C) lows in July.

Heat index

In July, the average heat index is estimated at 82.4°F (28°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The average relative humidity in July is 41%.

Rainfall

July and August are months with the least rain when the rain falls for 5.3 days and typically aggregates up to 0.35" (9mm) of rain.

Snowfall

June through August and October are months without snowfall.

Daylight

In July, the average length of the day is 15h and 22min.
On the first day of July, sunrise is at 5:04 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:23 pm PDT.

Sunshine

The months with the most sunshine are July and August, with an average of 12h of 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 vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 7 translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

How hot is it in July?

During July, Dayton experiences an average high-temperature of 83.5°F (28.6°C) and a low-temperature of 58.6°F (14.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in July is estimated at 82.4°F (28°C).

What is the average humidity in July?

The average relative humidity in July is 41%.

What is the driest month?

July and August are months with the least rain when the rain falls for 5.3 days and typically aggregates up to 0.35" (9mm) of rain.

How much does it rain in Dayton in July?

In Dayton, during July, the rain falls for 5.3 days and regularly aggregates up to 0.35" (9mm) of precipitation.

When it does not snow?

June through August and October are months without snowfall.

How many hours of daylight does Dayton have in July?

In July, the average day length is 15h and 22min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 5:04 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:23 pm PDT.

What is the month with the most sunshine?

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

How long on average sun shines in July?

The average sunshine duration in July is 12h.

When is the highest UV index?

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

What is the UV index reading in July?

The average daily maximum UV index in July is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe 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 July
Dayton, WA

Average temperature in July - Dayton, WA
  • Average high temperature in July: 83.5°F

The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in July: 58.6°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).

Average pressure in July
Dayton, WA

Average pressure in July - Dayton, 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 (29.9"Hg).

Average wind speed in July
Dayton, WA

Average wind speed in July - Dayton, WA
  • Average wind speed in July: 6.9mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).

Average humidity in July
Dayton, WA

Average humidity in July - Dayton, WA
  • Average humidity in July: 41%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).

Average rainfall in July
Dayton, WA

Average rainfall in July - Dayton, WA
  • Average rainfall in July: 0.35"

The wettest month (with the highest rainfall) is December (2.05").
The driest months (with the least rainfall) are July and August (0.35").

Average rainfall days in July
Dayton, WA

Average rainfall days in July - Dayton, WA
  • Average rainfall days in July: 5.3 days

The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is July (5.3 days).

Average snowfall in July
Dayton, WA

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

The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and October (0").

Average snowfall days in July
Dayton, WA

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

The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in July / Average sunshine in July - Dayton, WA
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in July: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in July
Dayton, WA

Average sunshine days in July - Dayton, WA
  • Average sunshine days in July: 24 days

The month with the most sunshine days is July (24 days).
The month with the least sunshine days is February (10 days).

Average UV index in July
Dayton, WA

Average UV index in July - Dayton, 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
Dayton, WA

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

The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).

Average visibility in July
Dayton, WA

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

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

Dayton, Washington, USA

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