Monthly weather forecast and climate
Alto, AZ

Weather in January

January, the same as December, in Alto, Arizona, is a moderate winter month, with average temperature varying between 60.4°F (15.8°C) and 40.5°F (4.7°C). In Alto, the average high-temperature is practically the same as in December - a still mild 60.4°F (15.8°C). Weather in January »

Weather in February

February, the last month of the winter, in Alto, is an enjoyable month, with average temperature ranging between min 41.7°F (5.4°C) and max 61.5°F (16.4°C). In February, the average high-temperature is essentially the same as in January - an enjoyable 61.5°F (16.4°C). Weather in February »

Weather in March

The first month of the spring, March, is an agreeable month in Alto, Arizona, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 46.9°F (8.3°C). In March, the average high-temperature marginally rises, from an enjoyable 61.5°F (16.4°C) in February, to a pleasant 68.5°F (20.3°C). Weather in March »

Weather in April

April in Alto, Arizona, is a warm spring month, with average temperature ranging between min 50.4°F (10.2°C) and max 74.3°F (23.5°C). In Alto, the average high-temperature slightly increases, from an agreeable 68.5°F (20.3°C) in March, to a moderately hot 74.3°F (23.5°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Alto, Arizona, with temperature in the range of an average low of 55.2°F (12.9°C) and an average high of 81.3°F (27.4°C). In May, the average high-temperature slightly increases, from a moderately hot 74.3°F (23.5°C) in April, to a still warm 81.3°F (27.4°C). Weather in May »

Weather in June

June, the first month of the summer, in Alto, is a hot month, with temperature in the range of an average high of 91°F (32.8°C) and an average low of 65.3°F (18.5°C). June is the warmest month, with an average high-temperature of 91°F (32.8°C) and an average low-temperature of 65.3°F (18.5°C). Weather in June »

Weather in July

July, the same as June, in Alto, Arizona, is another hot summer month, with average temperature fluctuating between 70.2°F (21.2°C) and 87.4°F (30.8°C). In Alto, the average high-temperature is essentially the same as in June - a still tropical 87.4°F (30.8°C). Weather in July »

Weather in August

August, the last month of the summer, in Alto, is also a hot month, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 68.4°F (20.2°C). In Alto, the average high-temperature is practically the same as in July - a still hot 87.1°F (30.6°C). Weather in August »

Weather in September

September, the first month of the autumn, in Alto, is still a warm month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 83.7°F (28.7°C). In Alto, the average high-temperature in September is almost the same as in August - a moderately hot 83.7°F (28.7°C). Weather in September »

Weather in October

October, like September, in Alto, Arizona, is another warm autumn month, with average temperature ranging between min 55.4°F (13°C) and max 77.2°F (25.1°C). In Alto, the average high-temperature in October slightly decreases, from 83.7°F (28.7°C) in September, to a still moderately hot 77.2°F (25.1°C). Weather in October »

Weather in November

November, the last month of the autumn, in Alto, is also an enjoyable month, with average temperature ranging between min 46.6°F (8.1°C) and max 67.6°F (19.8°C). In Alto, the average high-temperature decreases, from a moderately hot 77.2°F (25.1°C) in October, to an enjoyable 67.6°F (19.8°C). Weather in November »

Weather in December

December, the first month of the winter, in Alto, is still a mild month, with average temperature ranging between max 59.2°F (15.1°C) and min 39.9°F (4.4°C). The coldest month is December, with an average high-temperature of 59.2°F (15.1°C) and an average low-temperature of 39.9°F (4.4°C). Weather in December »
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FAQ

How many days does it rain in Alto?

Throughout the year, in Alto, Arizona, there are 87.8 rainfall days, and 15.43" (392mm) of precipitation is accumulated.

When does it snow in Alto?

January through March and December are months with snowfall in Alto.

How many days does it snow in Alto?

Throughout the year, there are 2.1 snowfall days, and 2.32" (59mm) of snow is accumulated.

What are the months with the lowest UV index in Alto?

January, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Alto, Arizona.

When it does not snow in Alto?

April through November are months without snowfall in Alto.

What are the least humid months in Alto?

May and June, with an average relative humidity of 24%, are the least humid months in Alto, Arizona.

What is the driest month in Alto?

May is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.16" (4mm) of precipitation.

What is the warmest month in Alto?

June is the warmest month, with an average high-temperature of 91°F (32.8°C) and an average low-temperature of 65.3°F (18.5°C).

When are the longest days in Alto?

The month with the longest days in Alto is June, with an average of 14.2h of daylight.

What month has the most sunshine in Alto?

The month with the most sunshine is June, with an average of 12h of sunshine.

When is the highest UV index in Alto?

Months with the highest UV index in Alto are June and August, with an average maximum UV index of 7.

What is the rainiest month in Alto?

July is the month with the most rainfall in Alto. Rain falls for 21.9 days and accumulates 4.53" (115mm) of precipitation.

What is the most humid month in Alto?

The most humid month in Alto is August, with an average relative humidity of 51%.

What is the coldest month in Alto?

With an average high-temperature of 59.2°F (15.1°C) and an average low-temperature of 39.9°F (4.4°C), December is the coldest month in Alto, Arizona.

When does it snow the most in Alto?

December is the month with the most snowfall in Alto. Snow falls for 0.7 days and accumulates 1.06" (27mm) of snow.

What is the month with the shortest days in Alto?

December has the shortest days of the year in Alto, Arizona, with an average of 10.1h of daylight.

What is the month with the least sunshine in Alto?

The month with the least sunshine is December, with an average of 6.9h of sunshine.

Average temperature
Alto, AZ

Average temperature - Alto, AZ

The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (59.2°F).

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).

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Average pressure
Alto, AZ

Average pressure - Alto, AZ

The month with the highest atmospheric pressure is January (30.06").
The month with the lowest atmospheric pressure is June (29.82").

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Average wind speed
Alto, AZ

Average wind speed - Alto, AZ

The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average rainfall
Alto, AZ

Average rainfall - Alto, AZ

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (0.16").

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Average rainfall days
Alto, AZ

Average rainfall days - Alto, AZ

The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is May (1.8 days).

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Average snowfall
Alto, AZ

Average snowfall - Alto, AZ

The month with the highest snowfall is December (1.06").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days
Alto, AZ

Average snowfall days - Alto, AZ

The month with the highest number of snowfall days is February (0.8 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Alto, AZ

Average daylight / Average sunshine - Alto, AZ

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

The month with the most sunshine is June (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days
Alto, AZ

Average sunshine days - Alto, AZ

The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is July (6.6 days).

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Average visibility
Alto, AZ

Average visibility - Alto, 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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