August weather forecast
Saint John, UT

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Weather in August

August, the last month of the summer in Saint John, is also a moderately hot month, with an average temperature varying between 61.9°F (16.6°C) and 84.4°F (29.1°C).

Temperature

The introduction of August notes a subtle temperature variation to a moderately hot 84.4°F (29.1°C) from July's 86.5°F (30.3°C). Saint John, in the heat of August, registers a significant plunge to a mean of 61.9°F (16.6°C) during the nights.

Humidity

In August, the average relative humidity is 35%.

Rainfall

In Saint John, in August, during 11.9 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Saint John, Utah, during the entire year, the rain falls for 120.7 days and collects up to 18.39" (467mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:44 pm. On the last day of August, sunrise is at 6:57 am and sunset at 8:02 pm MDT.

Sunshine

August has the most sunshine of the year, with an average of 11.9h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Saint John?

During August, Saint John experiences an average high-temperature of 84.4°F (29.1°C) and a low-temperature of 61.9°F (16.6°C).

What is the average humidity in August?

The average relative humidity in August is 35%.

How many days does it rain in August?

In Saint John, in August, it is raining for 11.9 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow?

In Saint John, Utah, snow does not fall in June through August.

Does it snow in August?

In Saint John, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August?

The average day length in August is 13h and 43min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:28 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 8:02 pm MDT.

What month has the most sunshine in Saint John?

The month with the most sunshine is August, with an average of 11.9h of sunshine.

How long on average sun shines in August?

In Saint John, the average sunshine duration in August is 11.9h.

What is the month with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

How high is the UV index in August?

In Saint John, the average daily maximum UV index in August is 6. A UV Index reading 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 August
Saint John, UT

Average temperature in August - Saint John, UT
  • Average high temperature in August: 84.4°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in August: 61.9°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in August
Saint John, UT

Average pressure in August - Saint John, UT
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Saint John, UT

Average wind speed in August - Saint John, UT
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is January (5.3mph).

Average humidity in August
Saint John, UT

Average humidity in August - Saint John, UT
  • Average humidity in August: 35%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (33%).

Average rainfall in August
Saint John, UT

Average rainfall in August - Saint John, UT
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is April (2.09").
The driest month (with the least rainfall) is June (0.79").

Average rainfall days in August
Saint John, UT

Average rainfall days in August - Saint John, UT
  • Average rainfall days in August: 11.9 days

The month with the highest number of rainy days is May (13.3 days).
The month with the least rainy days is November (6.5 days).

Average snowfall in August
Saint John, UT

Average snowfall in August - Saint John, UT
  • Average snowfall in August: 0"

The months with the highest snowfall are January and December (12.99").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Saint John, UT

Average snowfall days in August - Saint John, UT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Saint John, UT

Average daylight in August / Average sunshine in August - Saint John, UT
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 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: 5h and 12min).

Average sunshine days in August
Saint John, UT

Average sunshine days in August - Saint John, UT
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is February (11.6 days).

Average UV index in August
Saint John, UT

Average UV index in August - Saint John, UT
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Saint John, UT

Average cloud cover in August - Saint John, UT
  • Average cloud cover in August: 12

The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in August
Saint John, UT

Average visibility in August - Saint John, UT
  • Average visibility in August: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Saint John, Utah, USA

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