Grand Canyon National Park, AZ Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Grand Canyon National Park's primary NOAA station, GRAND CANYON NP AP - 2 stations mapped to the area.
The climate verdict for Grand Canyon National Park
Dryness leads the climate profile for Grand Canyon National Park, Arizona, with 13.4 inches of precipitation a year. NOAA records an annual average of 47°F. At 52/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 24% of scores.
- 47°F
- annual average temperature (NOAA normal)
- 52/100
- comfort score, above 24% of station-mapped location scores
- 13.4"
- precipitation, annual total
- 99 days
- frost-free days per growing season
Grand Canyon National Park: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00003195 · Grand Canyon National Park, AZ 47°F mean · 13.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-MULTI · BOOK-FULL
- TEMP-COOL 47°F
- RANK-COOL #1,784
- PHOTO-FINISH ≈ Glenwood
- PRCP-DRY 13.4"
- SWING-MID 38°F
- COMF-LOW 52/100
- LOAD-HEAT 6,799 HDD
- STN-MULTI USW00003195
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Glenwood, WA (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every AZ station list.
- Grand Canyon Na… (this station) 47°F
- Cold Elkins, WV 47°F
- Hot Potlatch, ID 47°F
- Near Glenwood, WA 47°F
- Near Portola, CA 47°F
Climate Living Index · Grand Canyon National Park
Grand Canyon National Park: 19/100 · grade F
Grand Canyon National Park publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 1 missing weight rescale to 100.
PlainClimate-derived for Grand Canyon National Park, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Summer moisture balance | 40.3°F mean dew point | 37/100 · F |
| Annual temperature balance | 46.7°F · 20.8° from 67.5°F | 26/100 · F |
| Precipitation balance | 13.4 in · 21.6 from 35 in | 23/100 · F |
| Normal heat + freeze calendar | 221 calendar days | 5/100 · F |
| Frost-free season | 99 days/year | 0/100 · F |
Grand Canyon National Park · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Grand Canyon National Park is a continental Köppen climate: Dsb
Coldest-month mean 29.2°F and warmest-month mean 67.0°F place this station in continental, dry-summer, warm summer climates (Dsb). Class Dsb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, dry-summer, warm summer.
- Köppen code
- Dsb
- Group
- Continental
- Warmest month
- 67.0°F
- Coldest month
- 29.2°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Grand Canyon National Park sits across the climate record
Three NOAA fields for Grand Canyon National Park's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 74%
- Among 6,861 stations, Grand Canyon National Park sits in the cooler third of annual means.
- Annual precipitation
- Drier than 87%
- Grand Canyon National Park's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 74%
- Warmest-to-coldest month gap for Grand Canyon National Park is compact versus 6,861 complete station-years.
How Grand Canyon National Park compares across U.S. station-mapped locations
Grand Canyon National Park's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
52 24th percentile score exceeds 24% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). This entry sits in this band.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 44°F (7°C) | 16°F (-9°C) | 30°F (-1°C) | 1.2" | N/A | 29.9 | 0.0 |
| February | 47°F (8°C) | 17°F (-8°C) | 32°F (0°C) | 1.2" | N/A | 27.3 | 0.0 |
| March | 55°F (13°C) | 22°F (-6°C) | 38°F (3°C) | 1.2" | N/A | 29.8 | 0.0 |
| April | 61°F (16°C) | 25°F (-4°C) | 43°F (6°C) | 0.7" | N/A | 27.1 | 0.0 |
| May | 71°F (22°C) | 32°F (0°C) | 51°F (11°C) | 0.6" | N/A | 20.0 | 0.2 |
| June | 83°F (28°C) | 38°F (3°C) | 60°F (16°C) | 0.4" | N/A | 5.7 | 4.7 |
| July | 85°F (29°C) | 49°F (9°C) | 67°F (19°C) | 1.7" | N/A | 0.3 | 8.5 |
| August | 83°F (28°C) | 49°F (10°C) | 66°F (19°C) | 2.1" | N/A | 0.1 | 3.0 |
| September | 77°F (25°C) | 40°F (5°C) | 59°F (15°C) | 1.4" | N/A | 4.4 | 0.2 |
| October | 66°F (19°C) | 30°F (-1°C) | 48°F (9°C) | 1.3" | N/A | 22.5 | 0.0 |
| November | 54°F (12°C) | 21°F (-6°C) | 37°F (3°C) | 0.8" | N/A | 28.2 | 0.0 |
| December | 44°F (7°C) | 14°F (-10°C) | 29°F (-2°C) | 0.8" | N/A | 30.1 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 86°F around July 2, short of 90°F on every date, while 221 dates carry a normal low at or below freezing, the coldest 13°F near December 18.
The freezing stretch
The normal low stays at or below 32°F into May 17, then returns to freezing around October 10, covering 221 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is July 31, when 40% of years recorded at least a hundredth of an inch. The driest is June 6 at 8%. Summed across the calendar, that is about 73 wet dates a year.
The widest day
June 15 carries the biggest normal gap between afternoon and dawn, 46°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Grand Canyon National Park.
Where Grand Canyon National Park Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 221 nights a year, placing this among the most frost-prone tenth of ranked stations.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 46°F, sharper than nine in ten ranked stations see.
Grand Canyon National Park earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
6.2 days with precipitation
6.6 days with precipitation
5.7 days with precipitation
5.1 days with precipitation
3.5 days with precipitation
2.1 days with precipitation
11.2 days with precipitation
11.4 days with precipitation
6.3 days with precipitation
4.9 days with precipitation
3.7 days with precipitation
5.9 days with precipitation
Grand Canyon National Park spreads its precipitation across the year
Neither half of the year dominates here: June through August take 31% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Grand Canyon National Park has no dry season to plan around, though it does carry a 37.8°F seasonal spread.
The gap between the wettest and driest month still matters: August averages 2.1" and June 0.4". The three wettest months together take 38% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Grand Canyon National Park is dry, and what does fall arrives gently
Only about 73 days a year record measurable precipitation here, 20% of the calendar, and they carry 13.4" between them. At roughly 0.18 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is August at about 11 wet days; the driest is June at about 2.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Frost Dates & Growing Season
First Fall Freeze
September 24
50% probability date
Last Spring Freeze
June 17
50% probability date
Growing Season
99 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,799
Higher = more heating needed
Cooling Degree Days
162
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 62% | 5.6 | 64% | 17% |
| February | 58% | 6.7 | 56% | 18% |
| March | 47% | 7.2 | 57% | 12% |
| April | 39% | 7.3 | 61% | 7% |
| May | 31% | 7.2 | 75% | 4% |
| June | 29% | 6.5 | 72% | 2% |
| July | 51% | 4.8 | 48% | 6% |
| August | 52% | 4.7 | 51% | 5% |
| September | 44% | 5.8 | 70% | 4% |
| October | 48% | 5.6 | 71% | 8% |
| November | 55% | 5.6 | 72% | 10% |
| December | 61% | 5.7 | 64% | 17% |
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Grand Canyon National Park on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (47°F here).
- Allison, IA 47°F · 0.0°F off
- American Falls, ID 47°F · 0.0°F off
- Cherokee, IA 47°F · 0.0°F off
- Forsyth, MT 47°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (13.4" here), excluding temperature-peer places.
- Saco, MT 13.4" · 0.0" off
- Terry, MT 13.4" · 0.0" off
- Carrizozo, NM 13.3" · 0.0" off
- La Junta, CO 13.4" · 0.0" off
Scarce-water calendar
Where Grand Canyon National Park's limited precipitation lands
heating led · dry · mid swing
Grand Canyon National Park's energy balance leans toward cold weather: 6,799 annual heating degree days against 162 for cooling. Its 37.8°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 99 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and December mark the typical warm and cold ends of the calendar in Grand Canyon National Park's middle-range seasonal profile. The measured spread is 37.8°F. The annual average is 47°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Grand Canyon National Park's cold-season load does not imply a wet climate. Annual precipitation is 13.4 inches, which places the station in PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Grand Canyon National Park wettest normal
August
August concentrates the scarce annual total (13.4 inches).
Grand Canyon National Park driest normal
June
June is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Grand Canyon National Park's climate
How dry is Grand Canyon National Park? ▼
How cold does Grand Canyon National Park get in winter? ▼
How much energy does heating and cooling require in Grand Canyon National Park? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Grand Canyon National Park's primary station: GRAND CANYON NP AP (USW00003195). 2 NOAA stations are mapped to the Grand Canyon National Park area; the primary station's record is used for consistency. For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Grand Canyon National Park; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Grand Canyon National Park comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.