Maricopa County (Phoenix)
September
Weather in Maricopa County, Arizona for September 2027
Your guide to Maricopa County weather in September - trends and predictions
In general, the average temperature in Maricopa County at the beginning of September is 39.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 36.2 °C by the end of September.
With an average of 5 rainy days, Maricopa County experiences minimal rainfall in September.
Is September a good time to visit Maricopa County? check out the best time to travel to Maricopa County page.
✨ Is September a good time to visit Maricopa County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
25
Dry days
5
Rainy days
0
Snow days
38°/26°
Temperatures
17 km/h
Avg max wind
30 %
Avg humidity
Maricopa County Weather September
Move between months or click on a day
Temperatures trend during September in Maricopa County
See the weather trend as well as the moving average line
September weather in Maricopa County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 39° /28° | 7.8 mm | 9 | |
| Sept. 2 |  Patchy rain possible | 39° /29° | 1.1 mm | 9 | |
| Sept. 3 | Light rain | 40° /28° | 6.9 mm | 9.6 | |
| Sept. 4 |  Sunny | 40° /29° | 0.7 mm | 9 | |
| Sept. 5 | Sunny | 39° /29° | 0 mm | 9 | |
| Sept. 6 | Sunny | 41° /29° | 0 mm | 9 | |
| Sept. 7 | Sunny | 41° /29° | 0 mm | 9.2 | |
| Sept. 8 | Sunny | 41° /29° | 0 mm | 9.2 | |
| Sept. 9 | Sunny | 41° /29° | 0.4 mm | 9.1 | |
| Sept. 10 | Patchy rain possible | 40° /29° | 1.5 mm | 9 | |
| Sept. 11 | Sunny | 39° /29° | 0.5 mm | 8.9 | |
| Sept. 12 | Sunny | 38° /28° | 0.9 mm | 8.8 | |
| Sept. 13 | Patchy rain possible | 38° /27° | 2.3 mm | 8.7 | |
| Sept. 14 | Sunny | 38° /27° | 0.2 mm | 8.6 | |
| Sept. 15 | Patchy rain possible | 38° /27° | 1.6 mm | 8 | |
| Sept. 16 | Light rain | 38° /25° | 5.9 mm | 8 | |
| Sept. 17 | Sunny | 36° /26° | 0.5 mm | 8 | |
| Sept. 18 | Sunny | 37° /25° | 0.1 mm | 8 | |
| Sept. 19 | Sunny | 38° /26° | 0 mm | 8.2 | |
| Sept. 20 | Sunny | 37° /26° | 0 mm | 8 | |
| Sept. 21 | Patchy rain possible | 35° /25° | 1.8 mm | 8 | |
| Sept. 22 | Patchy rain possible | 36° /25° | 1.8 mm | 7.9 | |
| Sept. 23 | Sunny | 37° /26° | 0.2 mm | 7.8 | |
| Sept. 24 | Light rain | 37° /24° | 4.1 mm | 7.7 | |
| Sept. 25 | Sunny | 38° /25° | 0.1 mm | 7.7 | |
| Sept. 26 | Light rain | 37° /25° | 4.5 mm | 7.6 | |
| Sept. 27 | Sunny | 37° /25° | 0.5 mm | 7 | |
| Sept. 28 | Light rain | 36° /24° | 5.3 mm | 7 | |
| Sept. 29 | Light rain | 34° /23° | 3.3 mm | 7.3 | |
| Sept. 30 | Sunny | 35° /23° | 0.2 mm | 7.2 | |
| Next | |||||
Important Notice
Our weather forecast for Maricopa County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Maricopa County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Maricopa County in September - FAQ
What are the expected maximum and minimum temperatures in Maricopa County during September?
With daytime temperatures soaring above 38° and not dropping much below 26° at night, September in Maricopa County is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Maricopa County during September?
Moderate rainfall is anticipated in Maricopa County during September, with a total of 52.1 mm spread over approximately 5 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Maricopa County during September?
The average wind speed in Maricopa County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Maricopa County
Explore the daily rainfall trends and prepare for Maricopa Countys September weather 💧
Typically, Maricopa County has 5 rainy days in September with a total of 52.1 mm of rainfall.
UV exposure in Maricopa County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Maricopa County
Select a location for an accurate weather forecast
More Locations Quick links
More Maricopa County weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.