Grand Canyon National Park 2, Arizona climate: Climate normals at a NOAA weather station
Grand Canyon National Park 2's normal year runs from 18°F December nights to 85°F July afternoons, with 15.4 inches of precipitation and 43 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.9°C, December lows of −8°C, July highs of 29°C, 390 mm of precipitation a year.
- NOAA stationGrand Canyon National Park 2
- Station IDUSC00023596
- Location36.05°N 112.15°W
- Elevation6,785 ft (2,068 m)
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Grand Canyon National Park 2.
- Jan 44° 19°
- Feb 46° 21°
- Mar 54° 25°
- Apr 61° 29°
- May 70° 36°
- Jun 82° 43°
- Jul 85° 50°
- Aug 82° 50°
- Sep 76° 44°
- Oct 65° 33°
- Nov 53° 25°
- Dec 43° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Grand Canyon National Park 2 each month?
July is the warmest month, with normal highs of 85°F; December the coldest, with normal lows of 18°F. The most precipitation falls in July (2.33 in), the least in June (0.22 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 44°F | 19°F | 31.7°F | 1.76 | 12.9 | 6 | <1 | 30 | 10 h |
| February | 46°F | 21°F | 33.7°F | 1.23 | 7.8 | 6 | <1 | 27 | 10 h 50 min |
| March | 54°F | 25°F | 39.3°F | 1.85 | 8.1 | 6 | <1 | 28 | 11 h 50 min |
| April | 61°F | 29°F | 44.9°F | 0.64 | 2.8 | 4 | <1 | 22 | 13 h |
| May | 70°F | 36°F | 52.8°F | 0.40 | 0.1 | 3 | 1 | 9 | 14 h |
| June | 82°F | 43°F | 62.5°F | 0.22 | 0.0 | 2 | 5 | 1 | 14 h 40 min |
| July | 85°F | 50°F | 67.7°F | 2.33 | 0.0 | 7 | 10 | <1 | 14 h 20 min |
| August | 82°F | 50°F | 65.9°F | 2.19 | 0.0 | 10 | 3 | <1 | 13 h 30 min |
| September | 76°F | 44°F | 59.8°F | 1.50 | 0.0 | 6 | <1 | 1 | 12 h 30 min |
| October | 65°F | 33°F | 49.0°F | 1.23 | 1.1 | 5 | <1 | 13 | 11 h 20 min |
| November | 53°F | 25°F | 39.0°F | 0.77 | 2.2 | 4 | <1 | 26 | 10 h 20 min |
| December | 43°F | 18°F | 30.6°F | 1.25 | 8.0 | 6 | <1 | 31 | 9 h 40 min |
| Year (annual) | 63°F | 33°F | 48.1°F | 15.37 | 43.0 | 64 | 19 | 189 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | −7°C | −0.2°C | 45 mm | 33 cm |
| February | 8°C | −6°C | 0.9°C | 31 mm | 20 cm |
| March | 12°C | −4°C | 4.1°C | 47 mm | 21 cm |
| April | 16°C | −2°C | 7.2°C | 16 mm | 7 cm |
| May | 21°C | 2°C | 11.6°C | 10 mm | 0 cm |
| June | 28°C | 6°C | 16.9°C | 6 mm | 0 cm |
| July | 29°C | 10°C | 19.8°C | 59 mm | 0 cm |
| August | 28°C | 10°C | 18.8°C | 56 mm | 0 cm |
| September | 24°C | 7°C | 15.4°C | 38 mm | 0 cm |
| October | 18°C | 1°C | 9.4°C | 31 mm | 3 cm |
| November | 12°C | −4°C | 3.9°C | 20 mm | 6 cm |
| December | 6°C | −8°C | −0.8°C | 32 mm | 20 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00023596; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Grand Canyon National Park 2?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, June has the fewest days with rain (2).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00023596.
When is the last frost at Grand Canyon National Park 2?
In Grand Canyon National Park 2, the last spring frost (32°F) comes after June 1 in half of years and after June 17 in one year in ten; the first autumn frost comes before October 3 in half of years and before September 22 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- June 11 year in 10 after June 17; 9 in 10 after May 12
- First autumn frost, half of years before
- October 31 year in 10 before September 22; 9 in 10 before October 15
NOAA puts the median frost-free season at 123 days, and the season without a hard freeze (28°F) at 149 days.
A hard freeze (28°F) comes after May 15 in half of springs and before October 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Grand Canyon National Park 2 in zone 7a in ZIP code 86023, the nearest ZIP area.
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00023596; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Grand Canyon National Park 2?
In a normal year in Grand Canyon National Park 2, 19 days a year reach 90°F, 189 nights fall to 32°F or colder and 64 days bring measurable precipitation.
- Days at 90°F or more
- 19a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 189a normal year
- Days that stay below freezing
- 6high of 32°F or less
- Days with 0.01 inch of precipitation
- 64a normal year
- Days with 1 inch of snow or more
- 14a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00023596.
How sunny is it at Grand Canyon National Park 2?
Over a year 86% of the sunlight that would reach the ground under clear skies gets through the clouds at Grand Canyon National Park 2, 5.4 kWh per square metre a day. June is the sunniest month (93%) and December the cloudiest (78%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 81% | 3.0 |
| February | 79% | 3.9 |
| March | 84% | 5.4 |
| April | 86% | 6.8 |
| May | 88% | 7.7 |
| June | 93% | 8.4 |
| July | 84% | 7.1 |
| August | 85% | 6.6 |
| September | 90% | 5.9 |
| October | 89% | 4.6 |
| November | 86% | 3.4 |
| December | 78% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Grand Canyon National Park 2 record?
A normal year at Grand Canyon National Park 2 brings 6,366 heating degree days, 18% more than the median U.S. place (5,373), and 212 cooling degree days, 77% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,957 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,031 | 0 |
| February | 876 | 0 |
| March | 797 | 0 |
| April | 605 | 0 |
| May | 383 | 3 |
| June | 110 | 35 |
| July | 21 | 103 |
| August | 32 | 61 |
| September | 167 | 10 |
| October | 498 | 0 |
| November | 782 | 0 |
| December | 1,066 | 0 |
| Year (annual) | 6,366 | 212 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00023596. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Grand Canyon National Park 2's climate compare?
Grand Canyon National Park 2 is warmer than 6 of the 97 places with their own NOAA record in Arizona, and wetter than 65. Across the 7,247 U.S. stations with normals, its annual mean of 48.1°F is warmer than 32%.
In the Köppen classification computed from these normals, Grand Canyon National Park 2 is Dsb: continental, dry-summer, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Grand Canyon National Park 2 share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Grand Canyon Village, AZ1,667 people · 1 mi NW
- Supai, AZ0 people · 33 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Grand Canyon National Park 2's climate
What is the coldest month at Grand Canyon National Park 2?
December, with a normal high of 43°F and a normal low of 18°F. The warmest is July (85°F by day, 50°F at night).
Does it snow at Grand Canyon National Park 2?
Yes: 43 inches in a normal year, falling on 17 days with 0.1 inch or more, the most in January (12.9 inches).
What is the rainiest month at Grand Canyon National Park 2?
July, with 2.33 in of precipitation in a normal year; the driest is June with 0.22 in.
What plant hardiness zone is Grand Canyon National Park 2 in?
The USDA's 2023 map puts Grand Canyon National Park 2 in zone 7a in ZIP code 86023, the nearest ZIP area.
How late can frost come at Grand Canyon National Park 2?
In half of years the last 32°F night comes after June 1; in one year in ten it comes after June 17. Waiting until June 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Grand Canyon Visitor Center, AZ2 miles from this station, 51.1°F a year
- Phantom Ranch, AZ5 miles from this station, 67.6°F a year
- Grand Canyon National Park Airport, AZ7 miles from this station, 46.7°F a year
- Bright Angel Ranger Station, AZ12 miles from this station, 43.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made