Temperatures in September
It's hot in September in Arizona with an average temperature of 37°C. Temperatures this month range from a low of 35°C to a high of 40°C. At night, you can expect temperatures between 21°C and 28°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Arizona in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Arizona with hot temperatures, averaging around 39°C during the day and nights close to 28°C. There’s little chance of precipitation. The weather is mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature drops to around 38°C, with nights close to 26°C. Not much precipitation expected during this period. It’s mostly dry with sunshine. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of September
By the end of September, the average daytime temperature in Arizona will be around 36°C, with nights close to 23°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Precipitation in September
In September, there is an average of 22 mm of precipitation, spread over 3 days. The wind speed is around 4 Bft, mostly coming from the South.
The precipitation chance averages 11% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Arizona. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Arizona in September |
UK | ||
|---|---|---|---|
 Average Temperature |
37°C | 20°C | |
 High Temp |
40°C | 22°C | |
| Low Temp |
35°C | 17°C | |
 Total Precipitation |
22 mm | 44 mm | |
| Rainy Days |
3 days | 8 days | |
August
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Arizona?
September isn’t a good time to be in Arizona. The average temperature of 37°C this month is uncomfortably hot for a pleasant stay.
Temperature records for Arizona in September
With 45°C, Arizona hit the highest temperature in the last 10 years in September 2020. The lowest daytime temperature in this month was 27°C in 2022. The extreme night temperatures ranged from a low of 15°C to a high of 32°C.
Check out the climate of Arizona for all months and discover the best travel time
The climate of Arizona is based on weather data from . Other spots, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Arizona for a full picture of the climate.
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Daily Temperature in September in Arizona
This chart shows the average daily temperatures, both day and night, for each day in September in Arizona, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Arizona
The chart below shows the average daily precipitation in September for Arizona, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 3 days of rain in Arizona.
Daily UV Index in September in Arizona
This chart shows the average daily UV index in September in Arizona, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Arizona Over the Years
This chart shows the average temperature in September in Arizona, measured in degrees Celsius, over the past years.
Total Precipitation in September in Arizona Over the Years
This chart shows the average precipitation in September in Arizona, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Arizona
Click on a specific day in September for detailed info on the typical weather on that day in Arizona. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Arizona
Have you been to Arizona in September?
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Average Weather in Arizona by Month
Click on a month below to see detailed weather info for Arizona. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
