May Weather in Scottsdale, United States

Last updated: February 24, 2025

In Scottsdale, United States, the weather in May is characterized by a striking blend of warmth and aridity. With a maximum temperature soaring to 43°C (109°F), residents and visitors can expect warm days filled with sunshine, while the average temperature settles at a comfortable 28°C (82°F). Nights bring a cool respite, with minimum temperatures dropping to a refreshing 13°C (55°F). Remarkably, May experiences no precipitation, recording only 2 mm (0.1 in) over the month, complemented by a low humidity level of 40%. This dry but delightful weather makes Scottsdale an appealing destination for outdoor activities and exploration!

May Temperature in Scottsdale

In Scottsdale, May ushers in the peak of warmth as temperatures start to rise dramatically. With a minimum of 13°C (55°F) and an average of 28°C (82°F), the city begins to transition from moderate spring to the sweltering summer heat. Max temperatures reach a sizzling 43°C (109°F), laying the groundwork for the hotter months ahead. This trend is evident as May's figures reflect a notable increase from April's milder max of 39°C (103°F), showcasing Scottsdale's characteristic dry heat. As residents and visitors bask in sunny days, May offers a perfect blend of warmth, making it an ideal time for outdoor activities before the scorching summer fully sets in.

May Weather in Scottsdale: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Scottsdale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec545764758292959489756555
Data source: Temperature data for Scottsdale generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Scottsdale

May in Scottsdale is characterized by an almost drought-like dry spell, with only 2 mm of precipitation (approximately 0.1 inches), marking it as one of the driest months of the year alongside April and June. Historically, this month sees zero rainy days, continuing the trend of minimal precipitation after the wetter months of winter and early spring. This lack of rain sets the stage for the warm summer ahead, as Scottsdale transitions into its hotter months. The stark drop from the rainfall of the preceding months highlights a significant shift, steering residents and visitors alike toward enjoying the abundant sunshine that the desert climate is known for.

May Precipitation Trends in Scottsdale

The chart displays monthly precipitation patterns in Scottsdale, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec253729122373927262123
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Scottsdale

As spring transitions into summer, May in Scottsdale, United States, showcases a notable decline in humidity, dropping to a comfortable 40%. This lower humidity level marks a significant shift from the preceding months, where January and February experience much higher moisture levels at 76% and 79% respectively. Following April's 55%, May sets the stage for the arid conditions that characterize the approaching summer months, evident as June and July see humidity levels plummet to 33% and 34%. Overall, the trend reveals a steady decrease in humidity from the start of the year, creating an inviting atmosphere for outdoor activities as the desert heat begins to intensify.

May Average Humidity in Scottsdale

This chart illustrates the average monthly humidity levels in Scottsdale, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Scottsdale

As the sun shines ever brighter in Scottsdale, Arizona, May is a month where the UV Index reaches a staggering 11, falling into the extreme exposure category. This indicates a significant jump from April's already high levels, emphasizing the increasing intensity of the sun as the season progresses. With a burn time of just 10 minutes, it's crucial for residents and visitors alike to take precautions against harmful UV radiation. Observing the trend, the UV Index remains elevated during these spring and summer months, peaking in June before slightly dropping in September. For those planning outdoor activities, staying informed is key to safeguarding your skin; for a complete understanding of daily conditions, check out the Scottsdale UV Index.

Maximum UV Index Levels in Scottsdale for May

The chart shows the monthly maximum UV Index (UVI) for Scottsdale in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec469101112111110754
Data source: Scottsdale May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Scottsdale

May in Scottsdale, United States, shines brightly with 373 hours of glorious sunshine, making it one of the sunniest months of the year. Following a steady climb from 195 hours in January to 331 hours in April, May's generous daylight marks a peak just before the summer heat intensifies. With sunshine hours continuing to hover just above this month's total into June, visitors can bask in the warmth and vibrant atmosphere that sets the stage for outdoor activities. As the skies remain predominantly clear, May not only showcases the beauty of Scottsdale but also hints at the increasing trend of sunshine that characterizes the region as it transitions into the hotter months. Enjoying the outdoors during this month offers the perfect balance of pleasant weather and ample warmth, making it a prime time for exploration and relaxation.

Monthly Sunshine Duration in Scottsdale: May Highlighted

The May sunshine duration represents the total number of hours Scottsdale experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec195h241h309h331h373h375h361h346h315h297h258h240h
Data source: Scottsdale May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Scottsdale During May

As summer approaches, Scottsdale experiences a remarkable shift in weather patterns. By May, the chances of sunny days soar to an impressive 90%, making it one of the sunniest months of the year. This upward trend begins in the earlier months, with January kicking off at 60% and gradually increasing through the spring, reaching 76% in April. Interestingly, after May, the chances dip slightly during the hotter months of June and July, indicating a seasonal cycle where residents and visitors can fully embrace the abundant sunshine before the intense summer heat sets in. Thus, May stands out as the perfect time to enjoy the outdoors in Scottsdale, where sunny weather reigns supreme.

Percentage of Sunny Days in May in Scottsdale

The chart illustrates the percentage of sunny days in Scottsdale throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Scottsdale experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec60%73%73%76%90%72%36%59%70%76%71%55%
Data source: Scottsdale May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Scottsdale in May

In Scottsdale, United States, the onset of May brings with it an energizing continuation of longer daylight hours, matching April's 13 hours of sunlight. This trend indicates a steady increase from the earlier months, where January and February both offered a modest 10 hours. As the days stretch longer into June, reaching a peak of 14 hours, the gradual movement is clear: spring transitions seamlessly into summer, inviting outdoor activities and vibrant evenings. While the daylight begins to taper off again in the latter half of the year, with September seeing 12 hours followed by a decline into colder months, May stands out as a pivotal point, celebrating the beauty of spring before the summer solstice takes the stage.

Average Daylight Hours in Scottsdale for May

The chart illustrates the variation in daylight duration in Scottsdale throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 12m10h 59m11h 59m13h 1m13h 53m14h 19m14h 5m13h 19m12h 19m11h 18m10h 24m9h 57m
Data source: Scottsdale daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Scottsdale

In Scottsdale, May experiences a gentle breeze with an average wind speed of 2.6 m/s (6 mph), slightly dipping from April's 2.8 m/s. This month typically signifies a transition, as the winds begin to soften before the hotter summer months, where winds peak again at 2.8 m/s in June. Notably, the overall wind patterns show a gradual increase from January through April, peaking in spring and then tapering down through the summer and into the fall. As temperatures rise, the wind speeds often settle into a more tranquil rhythm, making May a pleasant time for outdoor activities in the sunny Southwest. This gentle climatic shift encourages both residents and visitors to enjoy the soothing breezes before the heat settles in for the season.

Average May Wind Speed in Scottsdale

The chart displays monthly wind speed patterns in Scottsdale, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.42.72.82.6 m/s2.82.11.91.82.42.11.9
Data source: Scottsdale May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Scottsdale Compares to Other Months

The weather in Scottsdale changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Scottsdale and find detailed weather information for every month.

May and January present contrasting weather experiences. In May, temperatures soar with a minimum of 13°C (55°F) and a blistering average of 28°C (82°F), reaching peaks of 43°C (109°F). The month boasts negligible precipitation, averaging just 2 mm (0.1 in), and a low humidity level of 40%. In stark contrast, January experiences cooler conditions with a minimum of -1°C (30°F) and an average of 12°C (54°F), peaking at 29°C (84°F). Additionally, January sees more precipitation, totaling 25 mm (1.0 in) over four days, accompanied by a significantly higher humidity of 76%. For a deeper dive into January weather specifics, check out Scottsdale weather in January.

May and February present stark contrasts in weather patterns. In May, temperatures soar with a minimum of 13°C (55°F) and an average high of 28°C (82°F), peaking at a scorching 43°C (109°F). This warm month enjoys minimal precipitation, averaging just 2 mm (0.1 in) and experiencing no rainy days, alongside a comfortable humidity level of 40%. Conversely, February offers a cooler climate, with temperatures ranging from a chilly minimum of 1°C (33°F) to a maximum of 29°C (84°F) and an average of 14°C (57°F). This month sees more rainfall, with 37 mm (1.4 in) over three days and significantly higher humidity at 79%. For more details on February weather, you can check Scottsdale weather in February.

In comparing the weather of May and March, it's evident that May is significantly warmer and drier. May boasts a minimum temperature of 13°C (55°F) and averages a high of 28°C (82°F), reaching peaks of up to 43°C (109°F), while enjoying almost no precipitation. In contrast, March has cooler temperatures, with a minimum of 4°C (39°F) and an average of 18°C (65°F), where it can reach a maximum of 35°C (95°F). Additionally, March experiences more precipitation, with 29 mm (1.2 in) over three days, and higher humidity at 67%. For more detailed insights, you can visit Scottsdale weather in March.

In comparing the weather between April and May, May brings significantly warmer temperatures, with minimums of 13°C (55°F) compared to April's 8°C (47°F) and average highs reaching 28°C (82°F) versus April's 24°C (75°F). Notably, May also sees a peak maximum temperature of 43°C (109°F), while April's highest temperature is 39°C (103°F). Both months experience minimal precipitation, with May recording 2 mm (0.1 in) and April only 1 mm (0.1 in), and both months have zero rainy days. However, humidity is lower in May at 40%, compared to 55% in April, which contributes to a drier feel in the air. For more detailed information, check out Scottsdale weather in April.

May and June both feature minimal precipitation and dry conditions, with no recorded rainy days. However, June experiences a notable increase in temperature, with average highs reaching 34°C (93°F) compared to May's 28°C (82°F). The minimum temperatures also rise significantly, from 13°C (55°F) in May to 19°C (66°F) in June. Despite the higher temperatures in June, the humidity slightly decreases from 40% in May to 33% in June, contributing to a drier feel. For more detailed information about June weather specifically, you can check Scottsdale weather in June.

In May, temperatures in Scottsdale range from a mild minimum of 13°C (55°F) to an average of 28°C (82°F), with occasional peaks reaching up to 43°C (109°F). This month boasts minimal precipitation, averaging just 2 mm (0.1 in) and experiencing no rainy days, alongside a relatively comfortable humidity level of 40%.

In contrast, July heat intensifies, with minimum temperatures starting at 23°C (74°F) and soaring to an average of 35°C (95°F), and maximum temperatures occasionally hitting 47°C (118°F). Unlike May, July sees more precipitation, totaling 37 mm (1.4 in) across about 6 days, while maintaining a lower humidity level at 34%. For more detailed information on Scottsdale weather in July, check the link.

When comparing the weather in May and August, notable differences emerge in temperature and humidity levels. May experiences a wide temperature range, with minimums around 13°C (55°F) and maximums reaching 43°C (109°F), while averaging 28°C (82°F). This month is characterized by very little precipitation, with no rainy days and a humidity level of 40%. In contrast, August sees higher temperatures, with minimums around 22°C (73°F), averages peaking at 35°C (95°F), and maximums soaring to 47°C (116°F). Additionally, August is marked by increased humidity at 48% and more frequent rainfall, with 39 mm (1.5 in) of precipitation spread over 5 days. For a more detailed look at summer weather, visit Scottsdale weather in August.

In May, the weather in Scottsdale features pleasant temperatures, ranging from a minimum of 13°C (55°F) to a maximum of 43°C (109°F), with an average temperature of 28°C (82°F). The month is notably dry, with only 2 mm (0.1 in) of precipitation recorded over no rainy days, maintaining a humidity level of 40%.

In contrast, September brings slightly cooler minimum temperatures at 13°C (56°F) and higher average temperatures, reaching 32°C (89°F), with extreme highs of 45°C (113°F). This month experiences more humidity, at 64%, and sees an increase in precipitation, totaling 27 mm (1.1 in) over three days. For more insights, check out Scottsdale weather in September.

May and October present contrasting weather conditions. In May, temperatures range from a minimum of 13°C (55°F) to a scorching maximum of 43°C (109°F), with an average of 28°C (82°F) and virtually no rainfall. The humidity is relatively low at 40%, resulting in dry heat perfect for outdoor activities. In comparison, October features cooler temperatures, with a minimum of 7°C (45°F), an average of 24°C (76°F), and a maximum of 41°C (105°F). This month experiences higher humidity at 67% and some precipitation, with about 26 mm (1.0 in) over 2 days. For more details on the climate specifics, you can check Scottsdale weather in October.

In May, the weather is typically warm and dry, with temperatures ranging from a minimum of 13°C (55°F) to a scorching maximum of 43°C (109°F) and an average of 28°C (82°F). The month boasts minimal precipitation, with just 2 mm (0.1 in) and no rainy days, alongside moderate humidity at 40%. In contrast, November presents a much cooler climate, with temperatures dipping to a minimum of 5°C (41°F), averaging 18°C (66°F), and reaching a high of 36°C (97°F). The month also experiences more precipitation, amounting to 21 mm (0.8 in), with rain occurring on one day, coupled with higher humidity at 77%. For more detailed information on November weather patterns, you can visit Scottsdale weather in November.

May and December present strikingly different weather patterns. In May, the temperatures soar, with a minimum of 13°C (55°F), an average of 28°C (82°F), and a maximum reaching up to 43°C (109°F). The month is characterized by minimal precipitation, with just 2 mm and no rainy days, accompanied by a lower humidity level of 40%. In contrast, December experiences much cooler temperatures, with a minimum of 0°C (32°F), an average of 13°C (55°F), and a maximum of 28°C (83°F). This month includes more precipitation, totaling 23 mm over four days, and significantly higher humidity at 82%. For a detailed look at December’s conditions, check out Scottsdale weather in December.

Compare Scottsdale's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Scottsdale

As spring gracefully transitions into summer, Scottsdale's May weather brings a delightful blend of warmth and low humidity, setting it apart from earlier months. With average temperatures pushing towards 28°C (82°F), residents and visitors alike can bask in the sun without the oppressive heat that July often brings. Moreover, May is a remarkably dry month, boasting virtually no precipitation, creating perfect conditions for outdoor activities and events. This unique weather pattern makes May an ideal time to explore all that Scottsdale has to offer. For more insights on the city's climate, visit Scottsdale Climate.