Climate and monthly weather forecast
Gilbert, AZ

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The climate of Gilbert

Falling under the BWh classification of the Köppen climate system, Gilbert, Arizona, specifically typifies a subtropical desert climate. The geographical positioning of the town in the Sonoran Desert significantly contributes to its weather conditions, which see little annual rainfall but high temperatures.

Gilbert experiences a broad fluctuation in temperature over the course of the year. The town witnesses the highest temperature averaging at about 101.8°F (38.8°C) in July, while the lowest mean value is at approximately 46.4°F (8°C) in January. Temperatures in this area generally follow a pattern, starting from 46.4°F (8°C) in January, gradually rising to the peak in July, then decreasing back to 46.4°F (8°C) by December.

A noteworthy feature in the climate of Gilbert is the extreme low humidity, especially during summer. From May to July, Gilbert sees the lowest relative humidity dipping down to around 17 to 19%. The months displaying the highest humidity, January and December, reflect a 43 to 44%, unquestionably low compared to global standards.

Talking about rainfall, Gilbert experiences the most amount of rainfall in July, 1.1" (28mm) to be precise, displaying a significant leap from the 0.08" (2mm) in June, the driest month. December and February are the subsequent months that see a reasonably heavy downpour, both recording nearly 0.94" (24mm) of rainfall.

The best time to visit Gilbert

Opting for the perfect timing to visit Gilbert largely depends on the visitor's interest in a particular season. Nevertheless, the most hospitable period in terms of weather must be the milder months of fall from September to November. During this period, temperatures start to recede from the scorching summer highs falling between 95.4°F (35.2°C) in September to 62.4°F (16.9°C) by December. Also, the amount of daily sunshine during these months varies from 9.7 hours in September to a decent six hours in December.

The worst time to visit Gilbert

The most unfavorable time to visit Gilbert would be amidst the sweltering summer months from May to August. During this period, the average high temperature ranges from 90.1°F (32.3°C) to an intense 101.8°F (38.8°C) in July. Moreover, accompanying these high temperatures, the months from May to July witness the least humidity, dropping to as low as 17 to 19%, hence soaring the discomfort level in the heat.

Spring weather in Gilbert

Spring in Gilbert, lasting from March to May, experiences moderately high temperatures that continue to rise during this period. Starting from March, the average high temperatures range from 74.8°F (23.8°C) to an intense 90.1°F (32.3°C) in May. On the other hand, the low temperatures linger between 54.9°F (12.7°C) and 66.6°F (19.2°C). The amount of rainfall is fairly distributed, ranging from 0.2" (5mm) to 0.71" (18mm) in March and May, respectively.

Summer weather in Gilbert

Summers in Gilbert, stretching from June to August, are dominated by intense heat, with temperatures soaring to an average high of 100.9°F (38.3°C) in both June and August, reaching 101.8°F (38.8°C) in July. Correspondingly, the night temperatures do not offer sufficient relief, remaining as high as 75.2°F (24°C) in June to 83.8°F (28.8°C) in August. Concurrently, the summer months are arid, as June receives 0.08" (2mm) of rainfall, which spikes to 1.1" (28mm) in July.

Autumn weather in Gilbert

Autumn in Gilbert, from September to November, signals a much-needed relief from the sweltering summer highs. The average high temperature marks a steady descent from 95.4°F (35.2°C) in September to 73°F (22.8°C) in November. Consistently, the low temperatures follow a similar trend starting at 77.4°F (25.2°C) and gradually easing down to 55.2°F (12.9°C) by November.

Winter weather in Gilbert

Winter in Gilbert, running from December to February, is bearably cool compared to other regions in the USA. The temperatures during this period fluctuate from a high of 66.7°F (19.3°C) in February to a low of 46.4°F (8°C) in January. Also, rainfall during winter ranges from 0.71" (18mm) in January to approximately 0.94" (24mm) in both December and February.

Weather in January

January in Gilbert, Arizona, boasts cool but comfortable weather, with plenty of daylight hours for residents and visitors to enjoy outdoor activities. The climate ushers in the New Year with mild temperatures, decent relative humidity, and a lower chance of rainfall. Weather in January »

Weather in February

Transitions in weather begin to emerge around February in Gilbert, Arizona, with a slightly warmer trend compared to January. This month experiences an increase in sunlight hours, coupled with a decrease in cloud cover which improves overall visibility in this Southwestern city. Weather in February »

Weather in March

March warms up further in Gilbert, Arizona, as spring approaches. Residents and visitors start experiencing early signs of this season, with the weather being rather dry and conducive for plethora outdoor activities. The relative humidity is the lowest throughout the year, which adds to the comfort of the air in Gilbert. Weather in March »

Weather in April

The heart of spring, April in Gilbert, Arizona presents a marked contrast in weather patterns. As the desert city shifts into a drier and warmer climate, it considers its residents with the promise of milder evenings and extended daylight hours. Weather in April »

Weather in May

May ushers in a preliminary phase of summer in Gilbert, Arizona, with a considerable daily sunshine amounting to a staggering 11.9 hours. The very high temperatures, coupled with relatively stable weather conditions, favour numerous outdoor festivities and events. Weather in May »

Weather in June

June is the driest month of the year in Gilbert, Arizona, bringing in the high-heat phase of summer. Citizens often adapt to the parched atmosphere this month brings, by partaking in indoor or water-based activities. In this month, the city has about 14.3 hours of daylight, setting the stage for extended days and seemingly shorter nights. The beginning of June in Gilbert, Arizona, signals a rise in the average high-temperature, moving from a tropical 90.1°F (32.3°C) in May to a fiery hot 100.9°F (38.3°C). Weather in June »

Weather in July

Heading deeper into summer, July becomes the hottest month of the year for Gilbert, Arizona. Against the backdrop of scorching temperatures, residents seek respite indoors while tourists capitalize on the acme of desert summer. A worth noting fact in July is the maximum recorded temperature reaching up to 101.8°F (38.8°C). The warmest month is July, 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 in Gilbert, Arizona, scales down the summer heat slightly, signaling the forthcoming fall. Yet, the month still brims with high heat and bright sunshine hours, extending desert adventures or pool-side relaxations for the dwellers. Weather in August »

Weather in September

September brings signs of relief from the intense sun in Gilbert, Arizona. The city begins its transition towards much awaited autumn, with temperatures beginning to recede and the weather patterns evincing promising changes. Weather in September »

Weather in October

Come October and Gilbert, Arizona prepares for the pleasingly mild weather conditions. The city welcomes a favorable shift in temperature patterns, with less intense heat than the summer months and a considerably low percentage of clouds covering the clear sky. Weather in October »

Weather in November

Novel changes arrive in November as Gilbert, Arizona commences the phase of seasonal shift towards cooler weather. It’s a perfect time for visitors seeking to escape from the early onset of winter elsewhere, as the city provides moderately warm days. Weather in November »

Weather in December

December is decidedly one of the coldest months of the year in Gilbert, Arizona. Evident declines in maximum temperatures create a setting for winter-falls, while the dwindling sunshine hours announce the short winter daytime. Weather in December »
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Frequently asked questions

How much does it rain in Gilbert?

Throughout the year, in Gilbert, there are 60.2 rainfall days, and 7.91" (201mm) of precipitation is accumulated.

What is the least humid month in Gilbert?

June is the least humid month in Gilbert, Arizona, with an average relative humidity of 17%.

What is the driest month in Gilbert?

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

When are the longest days in Gilbert?

With an average of 14h and 18min of daylight, June has the longest days of the year in Gilbert, Arizona.

What month has the most sunshine in Gilbert?

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

What are the months with the highest UV index in Gilbert?

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

What is the warmest month in Gilbert?

Gilbert's warmest temperatures are experienced in July, with average high temperatures of 101.8°F (38.8°C) and lows of 82.9°F (28.3°C).

What is the wettest month in Gilbert?

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

What are the coldest months in Gilbert?

Gilbert's December weather, with an average high temperature of 62.4°F (16.9°C) and an average low temperature of 46.6°F (8.1°C), tends to be the coldest of the year.

What is the most humid month in Gilbert?

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

What is the month with the shortest days in Gilbert?

With an average of 10h and 0min of daylight, December has the shortest days of the year in Gilbert.

Is there Daylight Saving Time (DST) in Gilbert?

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

What is the month with the least sunshine in Gilbert?

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

What is the month with the lowest UV index in Gilbert?

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

Average temperature
Gilbert, AZ

Average temperature - Gilbert, 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
Gilbert, AZ

Average pressure - Gilbert, 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
Gilbert, AZ

Average wind speed - Gilbert, 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
Gilbert, AZ

Average rainfall - Gilbert, 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
Gilbert, AZ

Average rainfall days - Gilbert, 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
Gilbert, AZ

Average daylight / Average sunshine - Gilbert, AZ

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

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
Gilbert, AZ

Average sunshine days - Gilbert, 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
Gilbert, AZ

Average visibility - Gilbert, 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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Gilbert, Arizona, USA

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