Scottsdale is one of many cities located in what is called the Valley of the Sun where there are more than 330 days of sunshine per year. The long summer from May through September is divided into the dry summer and the wet summer. The dry summer sees very high temperatures, low humidity, and no precipitation.
The wet summer or the monsoon season lasts from July through mid-September with short late-day thunderstorms and high winds. You can stay at one of the Arizona resorts with a water park during the hottest season. In the fall the precipitation ends and temperatures start to drop. Winter is cooler with occasional frost warnings but no snow. The best time to visit Scottsdale is in the spring when temperatures are pleasant for outdoor activities and sightseeing.
Weather by Month:
January measures at the second coldest month of the year in Scottsdale as the average high temperature hovers at 66°F (19°C), and the average low temperature settles at 43°F (6°C). January receives the highest precipitation rate of the year, too, with an expected rainfall of 1 inch (32 mm).
Scottsdale Weather in February: Temperatures in February rise a few degrees to an average high temperature of 69°F (20°C) and an average low temperature of 46°F (8°C).
In March, spring brings warmer temperatures and sunny days as the average high temperature rises to 75°F (24°C). The low temperature average is 50°F (10°C).
Scottsdale Weather in April: The heat is on in Scottsdale during April with a considerable increase in the average high and average low temperatures. The average high temperature measures at 83°F (28°C) while the average low temperature is 57°F (14°C).
May sees nearly 0 inches (5 mm) of precipitation, the lowest out of the entire year, coupled with one of the warmer months of the year. May’s average high temperature is 92°F (34°C) while it’s low temperature is 66°F (19°C).
| Month | Average High (°F) | Average Low (°F) | Average Precipitation (inches) |
|---|---|---|---|
| January | 67 | 45 | 1.0 |
| February | 72 | 49 | 1.0 |
| March | 78 | 55 | 0.9 |
| April | 86 | 62 | 0.3 |
| May | 95 | 70 | 0.2 |
| June | 104 | 79 | 0.1 |
| July | 107 | 85 | 0.9 |
| August | 105 | 83 | 1.1 |
| September | 99 | 76 | 0.7 |
| October | 88 | 64 | 0.6 |
| November | 76 | 53 | 0.9 |
| December | 68 | 47 | 1.1 |
In June, the average high temperature measures at 101°F (38°C). Average low temperatures also climb to 75°F (24°C).
July tops the year’s charts as the hottest month of the year. The average high temperature is a boiling 104°F (40°C). Meanwhile, the average low temperature also comes in at the hottest of the year at 81°F (27°C).
Scottsdale Weather in August: The second hottest month of the year is August where the average high temperature is 102°F (39°C). Low temperatures decrease by a single degree when compared to July.
September marks the beginning of autumn. The average high and average low temperatures range between 98°F (36°C) and 74°F (23°C).
In October, both average high and average low temperatures drop by over 10 degrees to 87°F (30°C) and 62°F (17°C) respectively. By this time, tourists start to dwindle making it a great time to visit for those who prefer to avoid crowds.
November sees a further decrease in temperature, this time falling by almost 15 degrees. The average high temperature is 74°F (24°C) and the average low temperature is 49°F (10°C).
December is the coldest month in Scottsdale with an average high temperature of 65°F (18°C). The average low temperature decreases further to 42°F (6°C).
There’s no doubt that Arizona is a gorgeous state to visit. Arguably the best time to visit Arizona’s most popular destination, the Grand Canyon, is during the winter months of December through February. During this time, the weather is mild and quite sunny. September through April, on the other hand, is the most ideal time to pay a visit to the southern cities of Arizona such as Phoenix and Tucson. Festival goers should plan their trip to Arizona in April or May, as this largely festival season. If your main desire to avoid the tourist crowds, however, plan your visit anywhere between early May and late October.
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