Weather in Tucson in September 2025
Average weather
Average temperature in Tucson in September
Going from a maximum of +108°F during the day to a minimum of +64°F during the night, the temperature in September averages around +99°F.
The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +100°F to +97°F.
Is Tucson warm or cold in September?
Tucson is typically hot in September.
Maximum temperatures go down compared to the previous month from +97°F to +93°F. The minimum temperature also goes down from +75°F to +70°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
Take a look at how September is compared to other months in Tucson:
Climate in Tucson in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +97°F | +93°F | +84°F | ||||
| Min. temperature | ||||||
| +63°F | +54°F | +36°F | ||||
| Max. temperature | ||||||
| +109°F | +109°F | +102°F | ||||
| Rainfall | ||||||
| 57 mm | 30 mm | 53 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 48% | 42% | 39% | ||||
| Air pressure | ||||||
| 1011 HPa | 1010 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 6 | 15 | 20 | ||||
| Cloudy days | ||||||
| 2 | 4 | 5 | ||||
| Rainy days | ||||||
| 13 | 8 | 5 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +97°F in the day, the average maximum temperature lowers to +93°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 57 mm to 30 mm. It feels drier, as humidity decreases from 48% to 42%. The average wind speed doesn’t change much during September, staying around 2 m/s. The good news is there are likely to be more sunny days in September, from 6 to 15.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Tucson is gradually increasing during September, going from 4 m/s to 5 m/s over the course of the month.
Rain
How was the weather last September in Tucson?
Climate Change Over the Years
The climate in Tucson in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1983 (+79°F) and the highest in 2017 (+88°F). The driest year was 2002 with only 96 mm of rainfall, and the wettest year was 2012 with 1690 mm.
FAQ
Is September a good time to visit Tucson?
Can you sunbathe in Tucson in September?
Is Tucson rainy in September?
Is it sunny in Tucson in September?
Other cities in USA
Monthly weather in Tucson
Source of the data
For this page, we’ve looked at the typical weather in Tucson, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.