Climate and monthly weather forecastYuma, AZ

The climate of Yuma

Yuma, Arizona nestles in the BWh zone according to the Köppen climate classification, fitting the subtropical desert criteria. The subtropical desert zone characteristically exhibits not only high temperatures but also scant rainfall throughout the year.

Turning attention to the desert locality in Yuma, striking shifts in temperatures are evident from month to month. It reaches highs of 105.3°F (40.7°C) in July and drops to lows of 50.9°F (10.5°C) in January, offering a vast temperature range. Sunshine hours are abundant with a peak of 14.3 hours in June. Conversely, UV radiation is at its most intense in the summer months, from June to August, rising to an index of 8.

A key characteristic of desert biomes, such as Yuma, is minimal precipitation. Precipitation is sparse, with the peak rainfall only reaching 0.39" (10mm) in July, September, and November. However, it is worth noting that these figures are dwarfed by the massive amount of sun in the month of May, with recorded sunshine days of up to 30.2 days. Humidity levels are relatively low year-round, maintaining between 22% and 38%, reflecting the arid conditions of the area.

Regarding wind conditions, they maintain a fairly stable pattern, with the wind's speed varying slightly, from 6.8mph (10.9km/h) in February to 8.5mph (13.7km/h) in April and July.

The best time to visit Yuma

Taking all climate parameters into account, the optimal time to visit Yuma is during the spring, more specifically from March to May. During this period, the temperatures are mild with highs fluctuating from 72.1°F (22.3°C) to 91.6°F (33.1°C) and the weather conditions are more amicable, with rainfall averaging at about 0.17" (4mm). In addition, the daylight hours start to increase, providing tourists ample time to enjoy their outdoor activities.

The worst time to visit Yuma

The relentless heat in Yuma from June to August often proves to be too much for visitors. With temperature highs soaring to between 102.6°F (39.2°C) and 105.3°F (40.7°C) and UV index readings reaching up to 8, the scorching summer months may be best avoided. While the rainfall slightly increases to an average of 0.24" (6mm) during these months, it does very little to relieve the sweltering heat.

Spring weather in Yuma

The spring season in Yuma, Arizona, characteristically has more moderate weather, well-suited to outdoor explorations. During these months, the temperatures rise steadily from 68°F (20°C) in March to 91.6°F (33.1°C) in May. Due to its desert climate, rainfall remains low throughout the spring, with precipitation increasing just slightly from 0.2" (5mm) in March to 0.04" (1mm) in May. The hours of daylight increase steadily during these months, offering optimal conditions for sightseeing and exploring the desert terrain.

Summer weather in Yuma

Summers in Yuma are characteristically unforgiving, often culminating in sweltering high temperatures. These summer months witness average highs reaching between 102.6°F (39.2°C) and 105.3°F (40.7°C), making it the hottest period of the year. This period also sees a slight increase in rainfall, peaking at 0.39" (10mm) in July. However, the scorching temperatures and intense UV index, which rises to 8, often make outdoor activities during the day challenging.

Autumn weather in Yuma

Following the intense summer heat, autumn emerges as a transition period in Yuma. During these months, temperatures begin to cool down, decreasing from 99.5°F (37.5°C) in September to a more comfortable 76.6°F (24.8°C) in November. Rainfall remains stable, oscillating around 0.28" (7mm), while daylight hours start to decrease, signaling the onset of the cooler season.

Winter weather in Yuma

Despite being situated in a subtropical desert zone, Yuma experiences relatively mild winters. From December to February, high temperatures fluctuate between 66°F (18.9°C) and 68°F (20°C), while lows range from 50.5°F (10.3°C) to 53.2°F (11.8°C). Rainfall remains minimal during this period, averaging at 0.24" (6mm), while daylight and sunshine hours decrease to their lowest levels. In these cooler months, visitors can thoroughly enjoy exploring Yuma without the discomfort of extreme heat.

Weather in January

Despite the chill of winter, Yuma, Arizona doesn't see the snowy scenes typical of many locations across the United States. The arid desert climate leads to a distinct winter season, where the sun often remains present in the sky for the vast majority of the available daylight. Weather in January »

Weather in February

The transition from January to February brings mild changes in Yuma's weather condition, an incremental increase in temperature and sunlight hours is observable. February signals the last full month of winter, but without the wet or snowy conditions many might associate with this period. Weather in February »

Weather in March

As spring begins to make its appearance, March in Yuma heralds a subtle transition in climatic conditions. An increase in average weekday sunshine hours to 9.5 hours coupled with the budding warmth and notable dryness all add up to create an appealing time for outdoor activities. Weather in March »

Weather in April

April ushers in some significant changes, with temperatures climbing and the days lengthening further, edging towards the peak daylight duration seen in summer. Increased heat necessitates hydration and sunscreen, especially for those venturing outdoors. Weather in April »

Weather in May

As the gateway to summer, May in Yuma sees another jump in temperatures, but the city’s low humidity helps keep conditions from becoming unbearable. This month sees an unusual decrease in cloud cover percentage to 6%, making the sky nearly always clear of clouds. Weather in May »

Weather in June

A peak in several meteorological aspects characterizes the typical June weather in Yuma. This is the time when summer announces its presence in no uncertain terms, with the longest days of the year and temperatures that can soar. June boasts the highest average daylight hours at 14.3, offering ample time to explore the city. Weather in June »

Weather in July

In July, the desert city of Yuma experiences average high temperatures reaching 105.3°F (40.7°C), the zenith of summer's onslaught of heat. Despite the high temperatures, rainfall increases slightly, offering temporary relief from the searing heat. Weather in July »

Weather in August

Following the peak in July, August sees a minute reduction in both temperatures and daylight hours in Yuma. However, even with this slight reprieve, people should be mindful of the heat and remember to drink plenty of fluids. This month has one of the highest average low temperatures at 86.4°F (30.2°C), sustaining the warm summer nights. Weather in August »

Weather in September

The arrival of September heralds a transition from the scorching Arizona as temperatures start their descent from the summer highs. The grip of extreme heat starts to loosen with the arrival of early autumn, but still ample sun ensures daytime remains warm. Weather in September »

Weather in October

October brings a marked change in Yuma's weather, with conditions becoming notably more comfortable. The incrementally cooling temperatures and reduced daylight hours signal the undeniable approach of winter. Yuma in mid-autumn is a beautiful mix of warm sunny days and cool, pleasurable evenings. Weather in October »

Weather in November

November, as part of late autumn in Yuma, sees another drop in temperature but maintains a pleasant and mild climate. Days are still significantly sunny, offset effectively by the cool wind and less heat. The visible decrease in temperature and sunlight hours signals to the inhabitants that winter is nearing. Weather in November »

Weather in December

December sees the complete transition to winter, the temperature dropping to an average of 66°F (18.9°C). But even in this coldest month, Yuma’s desert location ensures a far cry from the blizzards and extreme cold experienced elsewhere in the USA. Weather in December »