August weather forecast
Saint Johns, AZ

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Weather in August

The last month of the summer, August, is another warm month in Saint Johns, Arizona, with an average temperature ranging between min 65.1°F (18.4°C) and max 84.7°F (29.3°C).

Temperature

The arrival of August coincides with an average high-temperature of a warm 84.7°F (29.3°C), indicating a minimal shift from July's 86.5°F (30.3°C). Saint Johns experiences an average low-temperature reading of 65.1°F (18.4°C) throughout August.

Humidity

The average relative humidity in August in Saint Johns is 38%.

Rainfall

In August, the rain falls for 9.2 days. Throughout August, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 67.8 rainfall days, and 6.34" (161mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Saint Johns.

Daylight

In Saint Johns, the average length of the day in August is 13h and 24min.
On the first day of August in Saint Johns, sunrise is at 5:28 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 6:44 pm MST.

Sunshine

With an average of 12.2h of sunshine, August has the most sunshine of the year in Saint Johns.

UV index

The average daily maximum UV index in August in Saint Johns is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

How hot does it get in Saint Johns in August?

Saint Johns in August has an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 65.1°F (18.4°C).

What is the average humidity in August in Saint Johns?

In Saint Johns, Arizona, the average relative humidity in August is 38%.

How many days does it rain in August in Saint Johns?

In Saint Johns, Arizona, in August, it is raining for 9.2 days, with typically 0.79" (20mm) of accumulated precipitation.

When it does not snow in Saint Johns?

May through October are months without snowfall in Saint Johns.

What is the average length of the day in August in Saint Johns?

The average day length in August is 13h and 24min.

When is the sunrise / sunset in August in Saint Johns?

In August, on the first day of the month, sunrise is at 5:28 am and sunset at 7:18 pm. On the last day of the month, in Saint Johns, sunrise is at 5:50 am and sunset at 6:44 pm MST.

What month has the most sunshine in Saint Johns?

August has the most sunshine of the year in Saint Johns, Arizona, with an average of 12.2h of sunshine.

How many hours of sunshine does Saint Johns have in August?

The average sunshine duration in August in Saint Johns is 12.2h.

How high is the UV index in August in Saint Johns?

In Saint Johns, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk 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 August
Saint Johns, AZ

Average temperature in August - Saint Johns, AZ
  • Average high temperature in August: 84.7°F

The warmest months (with the highest average high temperature) are June and July (86.5°F).
The month with the lowest average high temperature is January (45.5°F).

  • Average low temperature in August: 65.1°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

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Average pressure in August
Saint Johns, AZ

Average pressure in August - Saint Johns, AZ
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Saint Johns, AZ

Average wind speed in August - Saint Johns, AZ
  • Average wind speed in August: 7.1mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).

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Average humidity in August
Saint Johns, AZ

Average humidity in August - Saint Johns, AZ
  • Average humidity in August: 38%

The month with the highest relative humidity is January (61%).
The month with the lowest relative humidity is June (21%).

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Average rainfall in August
Saint Johns, AZ

Average rainfall in August - Saint Johns, AZ
  • Average rainfall in August: 0.79"

The wettest month (with the highest rainfall) is July (0.83").
The driest months (with the least rainfall) are May and June (0.28").

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Average rainfall days in August
Saint Johns, AZ

Average rainfall days in August - Saint Johns, AZ
  • Average rainfall days in August: 9.2 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is November (2.9 days).

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Average snowfall in August
Saint Johns, AZ

Average snowfall in August - Saint Johns, AZ
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.44").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Saint Johns, AZ

Average snowfall days in August - Saint Johns, AZ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Saint Johns, AZ

Average daylight in August / Average sunshine in August - Saint Johns, AZ
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 12h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in August
Saint Johns, AZ

Average sunshine days in August - Saint Johns, AZ
  • Average sunshine days in August: 19.7 days

The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is July (17.4 days).

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Average UV index in August
Saint Johns, AZ

Average UV index in August - Saint Johns, AZ
  • Average UV index in August: 6

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

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Average cloud cover in August
Saint Johns, AZ

Average cloud cover in August - Saint Johns, AZ
  • Average cloud cover in August: 14

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 9).

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Average visibility in August
Saint Johns, AZ

Average visibility in August - Saint Johns, AZ
  • Average visibility in August: 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).

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Saint Johns, Arizona, USA

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