Climate and monthly weather forecast
Mesa, AZ

The scenic city of Mesa in Arizona, with a view of the famous well-manicured golf course near the Red Mountain range
The scenic city of Mesa in Arizona, with a view of the famous well-manicured golf course near the Red Mountain range

The climate of Mesa, AZ

Mesa has a tropical and subtropical, hot desert type of climate (Köppen climate classification BWh) with scorching summers and mild winters, and a meager amount of rainfall. It is a suburban city in the Maricopa County of Arizona, east of Phoenix, in the southwestern United States. Mesa lies in the Sonoran Desert, which significantly influences its climate and is a part of the sunniest region in the world.

Mesa's topography is mostly flat with desertlands, shrublands, and mesas. The average elevation stands at 375 meters above sea level. Mesa registers 3800 hours of annual sunshine that lasts for 80% of the daylight hours. The town lies in one of the driest and hottest regions in the United States with annual precipitation of barely 9.3" (236mm). The rainfall occurs in small quantities throughout the year, but the area is prone to thunderstorms and flash floods. The flatlands and arid landscape are unable to hold water, and a sudden burst of rain causes flooding. Snow is mostly absent in the far southern desert areas of the United States.

The summer sun is merciless in Mesa, and the high temperatures are mostly between 100°F (37.8°C) and 109.9°F (43.3°C). The average high temperature at the peak of July is 106°F (41.1°C) with mostly clear skies. Winters are mild, with an average low temperature of 39.9°F (4.4°C) in the coldest month of December. Winter days are usually bright and lie in the 60.1°F (15.6°C) to 70°F (21.1°C) zone, while the mild nights rarely drop below freezing. Spring and autumn are brief and mild, as the weather remains predominantly hot for a significant part of the year. The skies are mostly clear, and the conditions are dry due to low humidity.

The highest recorded temperature in Mesa is 118.9°F (48.3°C) in July 1995, while the record for the lowest temperature is 15.1°F (-9.4°C).

The best time to visit Mesa, AZ

The best time to visit Mesa is between November to March during the relatively cold winter and the short seasons of spring and autumn when the temperatures are agreeable. The winter nights are mostly above 35.1°F (1.7°C), while the days are warm and rarely cross 80.1°F (26.7°C). The sun's intensity is on the mild side during the winter, the rainfall is low, and there are no thunderstorms. Mesa receives visitors from all over America and typically the north where the winters are severely cold.

The worst time to visit Mesa, AZ

The worst time to visit Mesa is during the period from June to September when the sun is scorching, and the blistering heat is unbearable most of the time. Summer is prone to thunderstorms, and moderate rainfall causes flash floods, as the landscape is unable to hold even small quantities of water due to lack of vegetation. The dry and sunny days register 100°F (37.8°C) for the majority of the summer, and the extreme conditions mean that nights differ by 30 degrees Fahrenheit from the day. The apparent temperature is a few degrees higher than the registered one.

Weather hazards

Mesa lies in the hot Sonoran Desert, which experiences thunderstorms with lightning and flash floods during the summer. The city is a part of the Phoenix Metropolitan Area that is prone to thunder and dust storms from July to September. Dry streambeds quickly turn into raging water torrents as the sparse vegetation of the arid shrublands in the region cannot absorb rainfall even in small quantities.

Weather in January

January, like December, in Mesa, Arizona, is another comfortable winter month, with an average temperature varying between 46.4°F (8°C) and 63.9°F (17.7°C). In Mesa, Arizona, the average high-temperature in January is practically the same as in December - a still enjoyable 63.9°F (17.7°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Mesa, Arizona, with an average temperature varying between 66.7°F (19.3°C) and 48.7°F (9.3°C). In February, the average high-temperature is essentially the same as in January - a still enjoyable 66.7°F (19.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a warm month in Mesa, Arizona, with an average temperature ranging between max 74.8°F (23.8°C) and min 54.9°F (12.7°C). In Mesa, the average high-temperature in March slightly increases from an enjoyable 66.7°F (19.3°C) in February to a moderately hot 74.8°F (23.8°C). Weather in March »

Weather in April

April, like March, in Mesa, Arizona, is a moderately hot spring month, with an average temperature fluctuating between 82°F (27.8°C) and 59.7°F (15.4°C). In Mesa, the average high-temperature in April marginally rises from 74.8°F (23.8°C) in March to a still moderately hot 82°F (27.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a hot month in Mesa, Arizona, with an average temperature varying between 66.6°F (19.2°C) and 90.1°F (32.3°C). In May, the average high-temperature slightly increases from a warm 82°F (27.8°C) in April to a tropical 90.1°F (32.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a sweltering month in Mesa, Arizona, with an average temperature ranging between min 75.2°F (24°C) and max 100.9°F (38.3°C). In June, the average high-temperature increases from a hot 90.1°F (32.3°C) in May to a torrid 100.9°F (38.3°C). Weather in June »

Weather in July

July, like June, in Mesa, Arizona, is another torrid summer month, with temperature in the range of an average high of 101.8°F (38.8°C) and an average low of 82.9°F (28.3°C). July is the warmest month, with an average high-temperature of 101.8°F (38.8°C) and an average low-temperature of 82.9°F (28.3°C). Weather in July »

Weather in August

August, the last month of the summer in Mesa, is also a sweltering month, with an average temperature fluctuating between 100.9°F (38.3°C) and 83.8°F (28.8°C). In Mesa, the average high-temperature in August is practically the same as in July - a still very hot 100.9°F (38.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Mesa, is still a torrid month, with an average temperature ranging between max 95.4°F (35.2°C) and min 77.4°F (25.2°C). In Mesa, Arizona, the average high-temperature in September marginally drops from a sweltering 100.9°F (38.3°C) in August to a still very hot 95.4°F (35.2°C). Weather in September »

Weather in October

October, like September, in Mesa, Arizona, is a moderately hot autumn month, with an average temperature varying between 66°F (18.9°C) and 83.8°F (28.8°C). In October, the average high-temperature decreases from a very hot 95.4°F (35.2°C) in September to a moderately hot 83.8°F (28.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Mesa, Arizona, with an average temperature fluctuating between 73°F (22.8°C) and 55.2°F (12.9°C). In November, the average high-temperature drops from a moderately hot 83.8°F (28.8°C) in October to an agreeable 73°F (22.8°C). Weather in November »

Weather in December

The first month of the winter, December, is still a comfortable month in Mesa, Arizona, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 46.6°F (8.1°C). The coldest month is December, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 46.6°F (8.1°C). Weather in December »
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FAQ

How much does it rain in Mesa?

In Mesa, during the entire year, the rain falls for 60.2 days and collects up to 7.91" (201mm) of precipitation.

What is the least humid month in Mesa?

The least humid month is June, with an average relative humidity of 17%.

What is the driest month in Mesa?

June is the month with the least rainfall in Mesa, Arizona. Rain falls for 1.2 days and accumulates 0.08" (2mm) of precipitation.

When are the longest days in Mesa?

The month with the longest days in Mesa is June, with an average of 14h and 20min of daylight.

What month has the most sunshine in Mesa?

June has the most sunshine of the year, with an average of 12.2h of sunshine.

What is the month with the highest UV index in Mesa?

June through August, with an average maximum UV index of 8, are months with the highest UV index in Mesa, Arizona.

What is the warmest month in Mesa?

July is the warmest month in Mesa, Arizona, with an average high-temperature of 101.8°F (38.8°C) and an average low-temperature of 82.9°F (28.3°C).

What is the wettest month in Mesa?

The month with the most rainfall in Mesa, Arizona, is July, when the rain falls for 10.6 days and typically aggregates up to 1.1" (28mm) of precipitation.

What is the coldest month in Mesa?

With an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 46.6°F (8.1°C), December is the coldest month.

What is the most humid month in Mesa?

The most humid month in Mesa is December, with an average relative humidity of 44%.

What is the month with the shortest days in Mesa?

The month with the shortest days in Mesa is December, with an average of 9h and 59min of daylight.

Is there Daylight Saving Time (DST) in Mesa?

Mesa does not observe Daylight Saving Time (DST). MST timezone is used over the entire year.

What is the month with the least sunshine in Mesa?

With an average of 6.8h of sunshine, December has the least sunshine of the year in Mesa, Arizona.

When is the lowest UV index in Mesa?

With an average maximum UV index of 3, December is the month with the lowest UV index in Mesa.

Average temperature
Mesa, AZ

Average temperature - Mesa, AZ

The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (62.4°F).

The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).

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Average pressure
Mesa, AZ

Average pressure - Mesa, AZ

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

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Average wind speed
Mesa, AZ

Average wind speed - Mesa, AZ

The windiest months (with the highest average wind speed) are April and May (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).

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Average rainfall
Mesa, AZ

Average rainfall - Mesa, AZ

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days
Mesa, AZ

Average rainfall days - Mesa, AZ

The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is June (1.2 days).

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Average daylight / Average sunshine
Mesa, AZ

Average daylight / Average sunshine - Mesa, AZ

The month with the longest days is June (Average daylight: 14h and 20min).
The month with the shortest days is December (Average daylight: 9h and 59min).

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days
Mesa, AZ

Average sunshine days - Mesa, AZ

The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.6 days).

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Average visibility
Mesa, AZ

Average visibility - Mesa, AZ

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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