Scottsdale Weather in September
Scottsdale in September averages 37°C (99°F) during the day and 24°C (75°F) at night. Some rainfall is typical for this time of year.
Rainfall in Scottsdale in September
Records from the past 30 years suggest around 4 days of rain, with 23 mm (0.9 in) average for the month. Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.
Temperature in Scottsdale in September
Daytime highs in Scottsdale in September reach 37°C (99°F), with nights around 24°C (75°F). For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Scottsdale in September
The month enjoys around 328 hours of sunshine, creating mostly sunny days with good weather conditions.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Scottsdale. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Scottsdale's climate page.
Scottsdale Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
37°C (99°F)
Chance of Rain
13%
Precipitation
23 mm (0.9 in)
Rainy days
4 days
Sunshine
328 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Scottsdale typically drop from around 39°C (102°F) at the start of September to approximately 36°C (97°F) by the end. Nights are warm, with lows typically ranging from 23°C (73°F) to 28°C (82°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Scottsdale in September
Browse day-by-day weather records for Scottsdale spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Scottsdale historical weather extremes in September
The extremes listed below come from historical weather data collected in Scottsdale from 1976 through 2025.
- Scottsdale recorded its highest September temperature of 46°C (115°F) on September 28, 2024.
- Scottsdale experienced its chilliest September day on September 24, 1986, reaching only 23°C (73°F).
- Nighttime temperatures dropped to 13°C (55°F) on September 20, 1978, marking the coldest September night on record.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
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What to Wear in Scottsdale in September
Hot weather in September means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Pack a light rain jacket or compact umbrella for occasional showers. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Scottsdale in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Scottsdale's climate page.
See the full Scottsdale climate overview or explore weather in the United States of America.
