Grand Canyon (AZ)
September
Weather in Grand Canyon, Arizona for September 2026
Your guide to Grand Canyon weather in September - trends and predictions
So far, September 2026 in Grand Canyon is slightly warmer than the historical average by 0.9 °F.
The forecast for the next days in Grand Canyon predicts temperatures to be around 23 °F, close to the historical average.
In general, the average temperature in Grand Canyon at the beginning of September is 27.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.6 °F by the end of September.
Grand Canyon experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 34.8 mm.
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Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
25°/14°
Temperatures
22 km/h
Avg max wind
39 %
Avg humidity
Grand Canyon Weather September
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Temperatures trend during September in Grand Canyon
See the weather trend as well as the moving average line
September weather in Grand Canyon day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 27° /17° | 1.7 mm | 8 | |
| Sept. 2 |  Sunny | 28° /17° | 0.1 mm | 8 | |
| Sept. 3 | Sunny | 28° /16° | 1.1 mm | 8 | |
| Sept. 4 | Sunny | 28° /16° | 0 mm | 8 | |
| Sept. 5 | Sunny | 27° /16° | 7 mm | 6 | |
| Sept. 6 | Sunny | 26° /16° | 0 mm | 5 | |
| Sept. 7 | Moderate rain at times | 28° /16° | 0.3 mm | 5 | |
| Sept. 8 | Moderate rain at times | 28° /16° | 0.4 mm | 7 | |
| Sept. 9 |  Partly cloudy | 28° /15° | 0 mm | 7 | |
| Sept. 10 | Partly cloudy | 28° /16° | 0 mm | 8 | |
| Sept. 11 |  Cloudy | 26° /16° | 2.1 mm | 6 | |
| Sept. 12 | Sunny | 25° /14° | 0.6 mm | 7 | |
| Sept. 13 | Sunny | 25° /13° | 2.2 mm | 7 | |
| Sept. 14 |  Patchy rain possible | 27° /14° | 0.6 mm | 6 | |
| Sept. 15 |  Overcast | 25° /13° | 2 mm | 5 | |
| Sept. 16 | Sunny | 24° /13° | 3.4 mm | 5 | |
| Sept. 17 | Sunny | 23° /12° | 0.7 mm | 7 | |
| Sept. 18 | Sunny | 24° /11° | 0 mm | 7 | |
| Sept. 19 | Sunny | 24° /12° | 0 mm | 7 | |
| Sept. 20 | Patchy rain possible | 24° /13° | 0.4 mm | 6 | |
| Sept. 21 | Moderate or heavy rain shower | 22° /12° | 2.6 mm | 4 | |
| Sept. 22 | Sunny | 23° /12° | 5.4 mm | 5 | |
| Sept. 23 | Sunny | 25° /12° | 0 mm | 5 | |
| Sept. 24 | Sunny | 25° /11° | 0 mm | 5 | |
| Sept. 25 | Cloudy | 25° /15° | 0 mm | 7.8 | |
| Sept. 26 | Overcast | 26° /15° | 0 mm | 7.7 | |
| Sept. 27 | Overcast | 21° /15° | 0.8 mm | 1.4 | |
| Sept. 28 | Patchy rain possible | 21° /12° | 5 mm | 6.4 | |
| Sept. 29 | Sunny | 18° /10° | 1.2 mm | 5 | |
| Sept. 30 | Sunny | 22° /11° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Grand Canyon 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 Grand Canyon forecast closer to your planned date for the most up-to-date weather information.
Change Month
Grand Canyon in September - FAQ
What are the expected maximum and minimum temperatures in Grand Canyon during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grand Canyon during September?
In September, Grand Canyon can expect light to moderate rainfall, totaling 34.8 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Grand Canyon during September?
The average wind speed in Grand Canyon during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Grand Canyon
Explore the daily rainfall trends and prepare for Grand Canyons September weather 💧
Typically, Grand Canyon has 6 rainy days in September with a total of 34.8 mm of rainfall.
UV exposure in Grand Canyon during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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