Region in Arizona, United States
Grand Canyon weather by month and the best time to visit
When to go to Grand Canyon
Apr–May and Sep–Oct are mild. Summer is crowded, with 40°C+ inside the canyon; Dec–Feb brings snow and icy trails but few visitors.
Grand Canyon weather by month
Average daily high, rainfall and conditions.
- Jan4°31 mm
- Feb7°28 mm
- Mar12°21 mm
- Apr17°15 mm
- May23°13 mm
- Jun30°7 mm
- Jul31°45 mm
- Aug29°50 mm
- Sep25°29 mm
- Oct18°26 mm
- Nov11°20 mm
- Dec4°29 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 4°C40°F | -7°C20°F | 31 mm | 61% | Cold |
| February | 7°C45°F | -6°C22°F | 28 mm | 56% | Cold |
| March | 12°C54°F | -2°C28°F | 21 mm | 47% | Cool |
| April | 17°C62°F | 1°C33°F | 15 mm | 40% | Cool |
| May | 23°C73°F | 6°C43°F | 13 mm | 34% | Pleasant |
| June | 30°C85°F | 12°C54°F | 7 mm | 23% | Pleasant |
| July | 31°C87°F | 16°C61°F | 45 mm | 38% | Pleasant |
| August | 29°C84°F | 15°C58°F | 50 mm | 42% | Pleasant |
| September | 25°C78°F | 10°C51°F | 29 mm | 39% | Pleasant |
| October | 18°C64°F | 3°C38°F | 26 mm | 43% | Pleasant |
| November | 11°C51°F | -3°C27°F | 20 mm | 49% | Cold |
| December | 4°C40°F | -7°C20°F | 29 mm | 60% | Cold |
Best months across United States
| Place | Best months | Warmest month |
|---|---|---|
| New York City | Apr–Jun, Sep–Oct | Jul (26°C) |
| Las Vegas | Mar–May, Oct–Nov | Jul (42°C) |
| Los Angeles | Mar–May, Sep–Nov | Aug (32°C) |
| Orlando | Feb–Apr, Nov | May (31°C) |
| Miami | Nov–Apr | Aug (30°C) |
| San Francisco | Apr–May, Sep–Oct | Sep (24°C) |
| Honolulu | Apr–Jun, Sep–Oct | Sep (28°C) |
| Washington, D.C. | Mar–May, Sep–Oct | Jul (31°C) |
| Chicago | May–Jun, Sep–Oct | Jul (25°C) |
| Boston | May–Jun, Sep–Oct | Jul (28°C) |
| New Orleans | Feb–Apr, Oct–Nov | Jul (30°C) |
| San Diego | Apr–May, Sep–Nov | Aug (32°C) |
| Seattle | Jun–Sep | Aug (24°C) |
| Maui | Apr–May, Sep–Oct | Sep (22°C) |
| Nashville | Apr–May, Sep–Oct | Aug (32°C) |
| Austin | Mar–May, Oct–Nov | Aug (36°C) |
| Miami Beach | Nov–Apr | Aug (30°C) |
| Key West | Dec–Apr | Aug (30°C) |
| Denver | May–Jun, Sep–Oct | Jul (33°C) |
| Philadelphia | Apr–May, Sep–Oct | Jul (30°C) |
| Portland | Jun–Sep | Aug (29°C) |
| Atlanta | Mar–May, Oct–Nov | Jul (32°C) |
| San Antonio | Mar–May, Oct–Nov | Aug (36°C) |
| Charleston | Mar–May, Oct–Nov | Jul (32°C) |
| Savannah | Mar–May, Oct–Nov | Jul (33°C) |
| Fort Lauderdale | Dec–Apr | Aug (30°C) |
| Kauai | Apr–Jun, Sep–Oct | Sep (27°C) |
| Big Island | Apr–Jun, Sep–Oct | Aug (26°C) |
| Sedona | Mar–May, Sep–Nov | Jul (35°C) |
| Grand Canyon | Apr–May, Sep–Oct | Jul (31°C) |
Quick answers
What is the best month to visit Grand Canyon?
Apr–May, Sep–Oct. Apr–May and Sep–Oct are mild. Summer is crowded, with 40°C+ inside the canyon; Dec–Feb brings snow and icy trails but few visitors.
When is the rainy season in Grand Canyon?
Rain peaks in August with about 50 mm. No month averages 150 mm or more.
What is the hottest month in Grand Canyon?
July, with average highs of 31°C (87°F).
How cold does Grand Canyon get?
The coolest nights are in December, averaging -7°C (20°F).
More about Grand Canyon
Going to Grand Canyon solo?
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Sources
- NASA POWER climatology (2001–2020)
- Grand Canyon National Park, NPS
- Grand Canyon Railway
- Grand Canyon South Rim shuttle buses, NPS
- Grand Canyon medical services, NPS
- Northern Arizona Healthcare
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 1.4°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.