Click on a day for an hourly weather forecast
The temperatures in Grand Canyon in August are comfortable with low of 19°C and and high up to 28°C.
You can expect a few rainy days in Grand Canyon during August, but usually the weather is comfortable in August.
Our weather forecast can give you a great sense of what weather to expect in Grand Canyon in August 2025.
If you’re planning to visit Grand Canyon in the near future, we highly recommend that you review the 14 day weather forecast for Grand Canyon before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / -1° | 3 | 21 | 7 | 27 mm | Awful | Grand Canyon in January |
| February | 8° / 0° | 3 | 19 | 7 | 26 mm | Bad | Grand Canyon in February |
| March | 12° / 3° | 2 | 24 | 5 | 24 mm | Bad | Grand Canyon in March |
| April | 16° / 6° | 2 | 25 | 3 | 14 mm | Ok | Grand Canyon in April |
| May | 21° / 10° | 2 | 28 | 1 | 18 mm | Good | Grand Canyon in May |
| June | 28° / 16° | 1 | 29 | 0 | 7 mm | Perfect | Grand Canyon in June |
| July | 29° / 20° | 2 | 30 | 0 | 42 mm | Good | Grand Canyon in July |
| August | 28° / 19° | 2 | 29 | 0 | 39 mm | Perfect | Grand Canyon in August |
| September | 25° / 16° | 1 | 29 | 0 | 18 mm | Perfect | Grand Canyon in September |
| October | 18° / 9° | 2 | 28 | 1 | 21 mm | Good | Grand Canyon in October |
| November | 12° / 3° | 1 | 26 | 3 | 14 mm | Bad | Grand Canyon in November |
| December | 6° / -1° | 2 | 21 | 8 | 25 mm | Awful | Grand Canyon in December |