May weather forecast
Saint Johns, AZ

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Weather in May

The last month of the spring, May, is a moderately hot month in Saint Johns, Arizona, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 74.1°F (23.4°C).

Temperature

With the onset of May, Saint Johns's weather sees a minor temperature rise, transitioning from a comfortable 66.2°F (19°C) in April to a moderately hot 74.1°F (23.4°C). A steep decline to a fresh 50.2°F (10.1°C) characterizes the May nights in Saint Johns.

Humidity

In May, the average relative humidity is 25%.

Rainfall

May and June are months with the least rain when the rain falls for 4.3 days and typically aggregates up to 0.28" (7mm) of rain.

Snowfall

May through October are months without snowfall.

Daylight

In May, the average length of the day in Saint Johns is 13h and 59min.
On the first day of the month, sunrise is at 5:26 am and sunset at 7:02 pm. On the last day of May, sunrise is at 5:05 am and sunset at 7:24 pm MST.

Sunshine

In Saint Johns, the average sunshine in May is 11.8h.

UV index

In Saint Johns, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during May translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the usual temperature for Saint Johns in May?

In May, in Saint Johns, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 50.2°F (10.1°C).

What is the average humidity in May in Saint Johns?

The average relative humidity in May in Saint Johns, Arizona, is 25%.

What is the driest month in Saint Johns?

The months with the least rainfall in Saint Johns are May and June Rain falls for 4.3 days and accumulates 0.28" (7mm) of rain.

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

In Saint Johns, Arizona, in May, during 4.3 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

When it does not snow in Saint Johns?

In Saint Johns, Arizona, snow does not fall in May through October.

Does it snow in Saint Johns in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Saint Johns have in May?

In May, the average day length in Saint Johns, Arizona, is 13h and 59min.

What time are sunrise and sunset in May in Saint Johns?

In May, on the first day of the month, sunrise is at 5:26 am and sunset at 7:02 pm. On the last day of the month, in Saint Johns, Arizona, sunrise is at 5:05 am and sunset at 7:24 pm MST.

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

The average sunshine duration in May is 11.8h.

What is the UV index reading in May in Saint Johns?

The average daily maximum UV index in May in Saint Johns, Arizona, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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 May
Saint Johns, AZ

Average temperature in May - Saint Johns, AZ
  • Average high temperature in May: 74.1°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 May: 50.2°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 May
Saint Johns, AZ

Average pressure in May - Saint Johns, AZ
  • Average pressure in May: 29.89"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 May
Saint Johns, AZ

Average wind speed in May - Saint Johns, AZ
  • Average wind speed in May: 10.4mph

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 May
Saint Johns, AZ

Average humidity in May - Saint Johns, AZ
  • Average humidity in May: 25%

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 May
Saint Johns, AZ

Average rainfall in May - Saint Johns, AZ
  • Average rainfall in May: 0.28"

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 May
Saint Johns, AZ

Average rainfall days in May - Saint Johns, AZ
  • Average rainfall days in May: 4.3 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 May
Saint Johns, AZ

Average snowfall in May - Saint Johns, AZ
  • Average snowfall in May: 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 May
Saint Johns, AZ

Average snowfall days in May - Saint Johns, AZ
  • Average snowfall days in May: 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 May /
Average sunshine in May
Saint Johns, AZ

Average daylight in May / Average sunshine in May - Saint Johns, AZ
  • Average daylight in May: 14h and 0min

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 May: 11h and 5min

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 May
Saint Johns, AZ

Average sunshine days in May - Saint Johns, AZ
  • Average sunshine days in May: 25.3 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 May
Saint Johns, AZ

Average UV index in May - Saint Johns, AZ
  • Average UV index in May: 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 May
Saint Johns, AZ

Average cloud cover in May - Saint Johns, AZ
  • Average cloud cover in May: 11

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 May
Saint Johns, AZ

Average visibility in May - Saint Johns, AZ
  • Average visibility in May: 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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