July weather forecast and climate
Saint John, WA

Weather in July

July is a warm summer month in Saint John, Washington, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 58.6°F (14.8°C).

Temperature

July is the warmest month, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 58.6°F (14.8°C).

Heat index

In July, the average heat index is estimated at 83.7°F (28.7°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, metabolic differences, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Saint John, the average relative humidity in July is 40%.

Rainfall

The month with the least rainfall is July when the rain falls for 3.5 days and typically collects 0.16" (4mm) of precipitation.

Snowfall

June through August and October are months without snowfall.

Daylight

In July, the average length of the day is 15.4h.

Sunshine

In Saint John, the average sunshine is 12h.

UV index

July is the month with the highest UV index in Saint John, Washington, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in July interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in Saint John?

July is the warmest month in Saint John, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 58.6°F (14.8°C).

What is the temperature in July in Saint John?

The average high-temperature, in July, in Saint John, is 84.4°F (29.1°C), while the average low-temperature is 58.6°F (14.8°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 83.7°F (28.7°C).

What is the average humidity in July in Saint John?

In Saint John, Washington, the average relative humidity in July is 40%.

What is the driest month in Saint John?

The month with the least rainfall is July when the rain falls for 3.5 days and typically collects 0.16" (4mm) of precipitation.

How many days does it rain in July in Saint John?

In July, in Saint John, Washington, the rain falls for 3.5 days. Throughout July, 0.16" (4mm) of precipitation is accumulated.

When it does not snow in Saint John?

In Saint John snow does not fall in June through August and October.

What is the average length of the day in July in Saint John?

In July, the average length of the day is 15.4h.

How many hours of sunshine does Saint John have in July?

In July, the average sunshine is 12h.

When is the highest UV index in Saint John?

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

How high is the UV index in July in Saint John?

In July, the average daily maximum UV index in Saint John, Washington, is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in July
Saint John, WA

Average temperature in July - Saint John, WA
  • Average high temperature in July: 84.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (33.1°F).

  • Average low temperature in July: 58.6°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

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Average pressure in July
Saint John, WA

Average pressure in July - Saint John, WA
  • Average pressure in July: 29.92"

The month with the highest atmospheric pressure is January (30.19").
The month with the lowest atmospheric pressure is August (29.9").

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Average wind speed in July
Saint John, WA

Average wind speed in July - Saint John, WA
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in July
Saint John, WA

Average humidity in July - Saint John, WA
  • Average humidity in July: 40%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (36%).

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Average rainfall in July
Saint John, WA

Average rainfall in July - Saint John, WA
  • Average rainfall in July: 0.16"

The wettest months (with the highest rainfall) are January and May (0.91").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in July
Saint John, WA

Average rainfall days in July - Saint John, WA
  • Average rainfall days in July: 3.5 days

The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is July (3.5 days).

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Average snowfall in July
Saint John, WA

Average snowfall in July - Saint John, WA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (3.82").
Months with the least snowfall are June, July, August and October (0").

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Average snowfall days in July
Saint John, WA

Average snowfall days in July - Saint John, WA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is December (9.3 days).
Months with the least snowfall days are June, July, August and October (0 days).

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Average daylight in July /
Average sunshine in July
Saint John, WA

Average daylight in July / Average sunshine in July - Saint John, WA
  • Average daylight in July: 15.4h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in July: 12h

The month with the most sunshine is August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 4.3h).

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Average sunshine days in July
Saint John, WA

Average sunshine days in July - Saint John, WA
  • Average sunshine days in July: 26.6 days

The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is February (15.9 days).

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Average UV index in July
Saint John, WA

Average UV index in July - Saint John, WA
  • Average UV index in July: 7

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

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Average cloud cover in July
Saint John, WA

Average cloud cover in July - Saint John, WA
  • Average cloud cover in July: 11

Months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in July
Saint John, WA

Average visibility in July - Saint John, WA
  • Average visibility in July: 6mi

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

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