Arizona, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Gilbert, AZ

Gilbert experiences a tropical and subtropical, hot desert type of climate (Köppen climate classification BWh) with very hot and dry summers, mild to warm winters and a little amount of rainfall. It lies in the Maricopa County of Arizona, southeast of Phoenix, in the southwestern United States. The town lies in the Sonoran Desert, which significantly influences its climate and is a part of the sunniest region in the world.

The topography of Gilbert is mostly flat with desert lands and shrubs, while the average elevation of the town stands at 375 meters above sea level. Gilbert registers 3800 hours of annual sunshine that lasts for 80% of the daylight hours. The town is one of the driest and hottest in the United States with annual precipitation of barely 9.2" (233.7mm). The scarce rainfall occurs throughout the year, and the area is prone to thunderstorms and flash floods - the latter due to its flat topography and arid landscape that is unable to retain water. Snow is mostly absent, except for a cold wave that makes its way to the far south.

Summers are blistering in Gilbert with the high temperatures 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), and most of the days are clear and dry. Winters are cold, with the average low temperatures of 39.9°F (4.4°C) in the coldest month of December. Winter days are usually in the 60.1°F (15.6°C) to 70°F (21.1°C) zone and nights rarely drop below freezing of 32°F (0°C). Spring and autumn are short and mild, as the weather remains predominantly hot for a major part of the year. The skies are mostly clear due to the lack of humidity in the air.

The highest recorded temperature in Gilbert is 118.9°F (48.3°C) in July 1995.
The best time to visit Gilbert is during the relatively cold winter and the short periods of spring and autumn between November to March when the temperatures are comfortable. The low temperatures in winter are mostly above 35.1°F (1.7°C), while the highs rarely go past 80.1°F (26.7°C). The sunshine region is pleasant during the winter, and the small amount of rainfall during the period ensures that the town is mostly dry.
Tourists visit Gilbert from all over America during the cold continental winters.

The period from June to September is the worst time to visit Gilbert as the sun is scorching and unbearable most of the time. Additionally, summer is prone to thunderstorms and flash floods due to the nature of the soil, which is unable to hold even small quantities of water. The days cross 100°F (37.8°C) for a significant portion of the summer and the nights exhibit a difference of 30°F (-1.1°C) from the day. The dryness in the air is exasperating and only serves to raise the effect of heat.

Gilbert experiences thunderstorms with lightning and flash floods, typical of the dry and hot Sonoran Desert during the summer. July to September is prone to storms in the desert and the entire Phoenix Metropolitan Area, of which Gilbert is a part. The sparse vegetation in the form of shrubs in the region cannot absorb rainfall even in small quantities, and dry streambeds quickly turn into raging water torrents.

The average temperatures in Gilbert are in the 41°F (5°C) to 66.9°F (19.4°C) range, and most of the days remain sunny and dry. Weather in January »

February sees mild temperatures in the average range of 45°F (7.2°C) to 71.1°F (21.7°C) in Gilbert. The days are warm with 11 hours of daylight. Weather in February »

March is the wettest month in Gilbert with 1.2" (30.5mm) of rain and starts the short spring season with warm temperatures. Weather in March »

The average temperatures are in the zone of 54°F (12.2°C) to 84.9°F (29.4°C) as the fishing season attracts crowds to Gilbert with its parks and reserves. Weather in April »

May raises the heat with the end of the short spring season - the average high temperature touches 93.9°F (34.4°C), while the average low is at a comfortable 61°F (16.1°C). Weather in May »

The average temperatures are in the hot 70°F (21.1°C) to 104°F (40°C) range and most days are above 105.1°F (40.6°C). Weather in June »

July is usually the hottest month of the year in Gilbert with the average temperatures in the 77°F (25°C) to 106°F (41.1°C) zone. Weather in July »

The average temperatures register in the range of 75.9°F (24.4°C) to 104°F (40°C) as most days touch 105.1°F (40.6°C) and a few even 109.9°F (43.3°C). Weather in August »

The temperatures are low compared to the peak of the summer, but it is still sweltering as most of the days cross 100°F (37.8°C). Weather in September »

The nights start to cool down with the advent of the fall season as the average low-temperature drops to 59°F (15°C). Weather in October »

November is the peak of the autumn season in Gilbert with mild temperatures in the range of 46.9°F (8.3°C) to 75°F (23.9°C). The days are mostly below 80.1°F (26.7°C). Weather in November »

The average low temperatures are in the 39.9°F (4.4°C) to 66.9°F (19.4°C) range but the nights rarely drop below the freezing mark of 32°F (0°C). Weather in December »

What is the coldest month in Gilbert?

The coldest months in Gilbert, Arizona, are January and December, with an average high-temperature of 66.9°F (19.4°C).

How much does it rain in Gilbert?

Throughout the year, in Gilbert, 9.2" (234.1mm) of rain is accumulated.

What is the wettest month in Gilbert?

The month with the most rainfall is March when 1.2" (30.2mm) of precipitation is typically aggregated.

What is the driest month in Gilbert?

The month with the least rainfall in Gilbert is June when 0" (1mm) of precipitation is typically aggregated.

When are the longest days in Gilbert?

With an average of 14.3h of daylight, June has the longest days of the year.

What is the warmest month in Gilbert?

July is the warmest month in Gilbert, with an average high-temperature of 107.1°F (41.7°C) and an average low-temperature of 77°F (25°C).

What is the month with the shortest days in Gilbert?

The month with the shortest days is December, with an average of 10h of daylight.
Average daylight - Gilbert, AZ