Monthly weather forecast and climate
Saint Johns, AZ

Weather in January

January, like December, is a frosty winter month in Saint Johns, Arizona, with average temperature varying between 28.2°F (-2.1°C) and 45.5°F (7.5°C). January is the coldest month, with an average high-temperature of 45.5°F (7.5°C) and an average low-temperature of 28.2°F (-2.1°C). Weather in January »

Weather in February

February, the last month of the winter, in Saint Johns, is a cool month, with average temperature ranging between max 50.7°F (10.4°C) and min 31.5°F (-0.3°C). In Saint Johns, Arizona, the average high-temperature is essentially the same as in January - a fresh 50.7°F (10.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a moderate month in Saint Johns, Arizona, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 59.5°F (15.3°C). In March, the average high-temperature marginally rises, from a fresh 50.7°F (10.4°C) in February, to a moderate 59.5°F (15.3°C). Weather in March »

Weather in April

April in Saint Johns, Arizona, is a comfortable spring month, with average temperature varying between 43°F (6.1°C) and 66.2°F (19°C). In Saint Johns, Arizona, the average high-temperature in April marginally rises, from a moderate 59.5°F (15.3°C) in March, to an enjoyable 66.2°F (19°C). Weather in April »

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 high of 74.1°F (23.4°C) and an average low of 50.2°F (10.1°C). In Saint Johns, the average high-temperature marginally rises, from an enjoyable 66.2°F (19°C) in April, to a moderately hot 74.1°F (23.4°C). Weather in May »

Weather in June

June, the first month of the summer, in Saint Johns, is a tropical month, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 61.2°F (16.2°C). June and July, with an average high-temperature of 86.5°F (30.3°C), are the warmest months. Weather in June »

Weather in July

July, like June, is another hot summer month in Saint Johns, Arizona, with average temperature ranging between min 66.6°F (19.2°C) and max 86.5°F (30.3°C). June and July, with an average high-temperature of 86.5°F (30.3°C), are the warmest months. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Saint Johns, Arizona, with average temperature fluctuating between 65.1°F (18.4°C) and 84.7°F (29.3°C). In Saint Johns, the average high-temperature is practically the same as in July - a moderately hot 84.7°F (29.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Saint Johns, Arizona, with average temperature varying between 79.5°F (26.4°C) and 59.2°F (15.1°C). In September, the average high-temperature is practically the same as in August - a still warm 79.5°F (26.4°C). Weather in September »

Weather in October

October, the same as September, in Saint Johns, Arizona, is an agreeable autumn month, with average temperature fluctuating between 68.2°F (20.1°C) and 46.9°F (8.3°C). In October, the average high-temperature decreases, from a moderately hot 79.5°F (26.4°C) in September, to a pleasant 68.2°F (20.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Saint Johns, Arizona, with average temperature varying between 57.4°F (14.1°C) and 36.3°F (2.4°C). In November, the average high-temperature drops, from an agreeable 68.2°F (20.1°C) in October, to a mild 57.4°F (14.1°C). Weather in November »

Weather in December

December, the first month of the winter, in Saint Johns, is still a chilly month, with average temperature varying between 46.6°F (8.1°C) and 29.1°F (-1.6°C). In December, the average high-temperature drops, from a moderate 57.4°F (14.1°C) in November, to a frosty 46.6°F (8.1°C). Weather in December »
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FAQ

What is the coldest month in Saint Johns?

January is the coldest month in Saint Johns, Arizona, with an average high-temperature of 45.5°F (7.5°C) and an average low-temperature of 28.2°F (-2.1°C).

What is the most humid month in Saint Johns?

January is the most humid month in Saint Johns, with an average relative humidity of 61%.

How many days does it rain in Saint Johns?

Throughout the year, there are 67.8 rainfall days, and 6.34" (161mm) of precipitation is accumulated.

When does it snow in Saint Johns?

Months with snowfall in Saint Johns are January through April, November and December.

How much does it snow in Saint Johns?

In Saint Johns, during the entire year, snow falls for 14.9 days, and aggregates up to 7.87" (200mm) of snow.

When is the lowest UV index in Saint Johns?

Months with the lowest UV index in Saint Johns, Arizona, are January, November and December, with an average maximum UV index of 2.

What is the snowiest month in Saint Johns?

February is the month with the most snowfall. Snow falls for 3.1 days and accumulates 2.44" (62mm) of snow.

What is the driest month in Saint Johns?

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.

When it does not snow in Saint Johns?

May through October are months without snowfall in Saint Johns, Arizona.

What is the warmest month in Saint Johns?

June and July, with an average high-temperature of 86.5°F (30.3°C), are warmest months.

What is the least humid month in Saint Johns?

With an average relative humidity of 21%, June is the least humid month in Saint Johns.

When are the longest days in Saint Johns?

With an average of 14.4h of daylight, June has the longest days of the year.

When is the highest UV index in Saint Johns?

With an average maximum UV index of 7, June is the month with the highest UV index in Saint Johns, Arizona.

What is the rainiest month in Saint Johns?

The month with the most rainfall is July when the rain falls for 10.2 days and typically aggregates up to 0.83" (21mm) of precipitation.

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.

What is the month with the shortest days in Saint Johns?

December has the shortest days of the year, with an average of 9.9h of daylight.

What is the month with the least sunshine in Saint Johns?

The month with the least sunshine in Saint Johns is December, with an average of 7h of sunshine.

Average temperature
Saint Johns, AZ

Average temperature - Saint Johns, AZ

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).

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
Saint Johns, AZ

Average pressure - Saint Johns, AZ

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

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Average wind speed
Saint Johns, AZ

Average wind speed - Saint Johns, AZ

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 rainfall
Saint Johns, AZ

Average rainfall - Saint Johns, AZ

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
Saint Johns, AZ

Average rainfall days - Saint Johns, AZ

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
Saint Johns, AZ

Average snowfall - Saint Johns, AZ

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

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Average snowfall days
Saint Johns, AZ

Average snowfall days - Saint Johns, AZ

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

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Average daylight / Average sunshine
Saint Johns, AZ

Average daylight / Average sunshine - Saint Johns, AZ

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

The month with the most sunshine is August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days
Saint Johns, AZ

Average sunshine days - Saint Johns, AZ

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 visibility
Saint Johns, AZ

Average visibility - Saint Johns, AZ

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

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