Grand Canyon (AZ)
September
Weather in Grand Canyon, Arizona for September 2025
Your guide to Grand Canyon weather in September - trends and predictions
Expect cooler weather in first days of September 2025 in Grand Canyon with the forecast suggesting a temperature of 27.4 °F, lower than the historical average.
In general, the average temperature in Grand Canyon at the beginning of September is 28.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.3 °F by the end of September.
With an average of 5 rainy days, Grand Canyon experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
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25
Dry days
5
Rainy days
0
Snow days
26°/15°
Temperatures
21 km/h
Avg max wind
32 %
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 |  Sunny | 29° /19° | 0 mm | 6 | |
| Sept. 2 | Sunny | 27° /22° | 0 mm | 6 | |
| Sept. 3 | Sunny | 29° /20° | 0 mm | 6 | |
| Sept. 4 |  Patchy rain possible | 29° /20° | 0.2 mm | 5 | |
| Sept. 5 | Patchy rain possible | 28° /19° | 0.4 mm | 5 | |
| Sept. 6 | Sunny | 28° /19° | 0 mm | 6 | |
| Sept. 7 | Sunny | 29° /20° | 0 mm | 6 | |
| Sept. 8 |  Moderate rain at times | 27° /16° | 1.2 mm | 6 | |
| Sept. 9 |  Overcast | 27° /16° | 0 mm | 6 | |
| Sept. 10 |  Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 11 |  Cloudy | 28° /17° | 0 mm | 6 | |
| Sept. 12 | Sunny | 25° /15° | 0 mm | 7 | |
| Sept. 13 | Sunny | 25° /14° | 0 mm | 7 | |
| Sept. 14 | Patchy rain possible | 26° /14° | 0.1 mm | 6 | |
| Sept. 15 | Overcast | 25° /14° | 0 mm | 6 | |
| Sept. 16 | Sunny | 22° /12° | 0 mm | 6 | |
| Sept. 17 | Sunny | 19° /9° | 0 mm | 5 | |
| Sept. 18 | Sunny | 20° /7° | 0 mm | 6 | |
| Sept. 19 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 20 | Patchy rain possible | 22° /11° | 1.3 mm | 5 | |
| Sept. 21 | Moderate or heavy rain shower | 18° /9° | 4 mm | 4 | |
| Sept. 22 | Sunny | 22° /11° | 0 mm | 6 | |
| Sept. 23 | Sunny | 24° /12° | 0 mm | 6 | |
| Sept. 24 | Sunny | 26° /13° | 0 mm | 7 | |
| Sept. 25 | Sunny | 27° /14° | 0 mm | 7 | |
| Sept. 26 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 27 | Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 28 | Partly cloudy | 29° /19° | 0 mm | 7 | |
| Sept. 29 | Patchy rain possible | 27° /19° | 0.2 mm | 6 | |
| Sept. 30 | Partly cloudy | 27° /18° | 0 mm | 7 | |
| 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.
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Grand Canyon in September - FAQ
What are the expected maximum and minimum temperatures in Grand Canyon during September?
During September, expect a variety of temperatures with highs around 26° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grand Canyon during September?
Expect minimal rainfall in Grand Canyon during September, with a total of 12.3 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Grand Canyon during September?
The average wind speed in Grand Canyon during September is 21 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 💧
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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