Grand Canyon National Park Airport weather in August: Grand Canyon National Park Airport, Arizona: normal highs, lows, rain and records for August

Grand Canyon National Park Airport in August has a normal high of 83°F and a normal low of 49°F, a daily mean of 66°F, falling from 84°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 11 days in a normal August, 2.06 inches in all. (NOAA 1991-2020 normals)

In metric: a normal high of 28°C and low of 10°C, 52 mm of precipitation in August.

  • NOAA stationGrand Canyon National Park Airport
  • Station IDUSW00003195
  • Location35.95°N 112.15°W
  • Elevation6,606 ft (2,014 m)
  1. Jan 44° 16°
  2. Feb 47° 17°
  3. Mar 55° 22°
  4. Apr 61° 25°
  5. May 71° 32°
  6. Jun 83° 38°
  7. Jul 85° 49°
  8. Aug 83° 49°
  9. Sep 77° 40°
  10. Oct 66° 30°
  11. Nov 54° 21°
  12. Dec 44° 14°

Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.

How warm is Grand Canyon National Park Airport in August?

The normal high is 83°F and the normal low 49°F, for a daily mean of 66.1°F. August is 0.9°F cooler than July and 7.5°F warmer than September. August is the 2nd warmest month of the year in Grand Canyon National Park Airport and the wettest. Across the month the normal high falls 3°F, from 84°F on August 1 to 81°F on August 31. From one year to the next August's mean temperature typically moves about 1.5°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 65°F and 68°F.

Grand Canyon National Park Airport in August, day by day: normal high and low

Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 40%).

Normal high and low on five days of August, with the chance of precipitation
DayHighLowChance of 0.01 inChance of 0.10 in
August 184°F52°F40%17%
August 883°F51°F39%16%
August 1583°F50°F38%16%
August 2283°F48°F36%15%
August 3181°F46°F31%14%
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
Grand Canyon National Park Airport: NOAA 1991-2020 daily normals for each day of August
DayHighLowChance of 0.01 inChance of 0.10 inDaylight
August 184°F52°F40%17%14 h
August 284°F52°F40%17%14 h
August 384°F52°F40%17%14 h
August 484°F52°F39%16%13 h 50 min
August 584°F52°F39%16%13 h 50 min
August 684°F52°F39%16%13 h 50 min
August 783°F52°F39%16%13 h 50 min
August 883°F51°F39%16%13 h 50 min
August 983°F51°F39%16%13 h 50 min
August 1083°F51°F39%16%13 h 40 min
August 1183°F51°F38%16%13 h 40 min
August 1283°F51°F38%16%13 h 40 min
August 1383°F50°F38%16%13 h 40 min
August 1483°F50°F38%16%13 h 40 min
August 1583°F50°F38%16%13 h 30 min
August 1683°F50°F38%16%13 h 30 min
August 1783°F50°F37%16%13 h 30 min
August 1883°F49°F37%16%13 h 30 min
August 1983°F49°F37%16%13 h 30 min
August 2083°F49°F36%15%13 h 20 min
August 2183°F48°F36%15%13 h 20 min
August 2283°F48°F36%15%13 h 20 min
August 2382°F48°F35%15%13 h 20 min
August 2482°F48°F35%15%13 h 20 min
August 2582°F47°F34%15%13 h 10 min
August 2682°F47°F34%15%13 h 10 min
August 2782°F47°F33%15%13 h 10 min
August 2882°F46°F33%14%13 h 10 min
August 2982°F46°F32%14%13 h 10 min
August 3082°F46°F32%14%13 h
August 3181°F46°F31%14%13 h
Normal high
83°FAugust average
Normal low
49°FAugust average
Precipitation
2.06 inmonth total
Days with precipitation
110.01 inch or more
Days at 90°F or more
3
Daylight
14 h to 13 hAugust 1 to August 31
Days at 70°F or more
30
Days at 80°F or more
23
Sunshine
84%of clear-sky sunlight (NASA)

Source: NOAA NCEI 1991-2020 daily normals, station USW00003195; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.

Does it rain in Grand Canyon National Park Airport in August?

On a given August day the chance of 0.01 inch or more is 37% on average, highest around August 1 (40%). In all, 2.06 in falls on 11 days of a normal August.

In a normal August in Grand Canyon National Park Airport, 3 days reach 90°F.

Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003195.

How humid and windy is Grand Canyon National Park Airport in August?

At 3 p.m. the normal temperature is 77°F with 29% relative humidity and a dew point of 42°F; at 6 a.m. it is 48°F with 79% humidity. The wind averages 4.7 mph, most often from the southwest in the afternoon. A dew point under 50°F feels dry.

A normal August day at the station, hour by hour (local standard time)
TimeTemperatureDew pointHumidityWindClear or few clouds
6 a.m.48°F42°F79%1.7 mph83%
9 a.m.70°F46°F42%5.9 mph81%
noon77°F43°F30%8.6 mph66%
3 p.m.77°F42°F29%9.5 mph56%
6 p.m.74°F42°F32%7.4 mph63%
9 p.m.59°F44°F56%2.1 mph–

Source: NOAA NCEI 1991-2020 hourly normals, station USW00003195. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).

What are the records for August in Grand Canyon National Park Airport?

The warmest August temperature on this station's record (since 1996) is 96°F, on August 19, 2020; the coldest is 29°F, on August 8, 2009. The wettest August brought 5.15 in (2013).

The August mean against the 1991-2020 normal of 66.1°F: 2021 66.9°F (+0.8), 2022 66.8°F (+0.7), 2023 68.1°F (+2.0), 2024 68.1°F (+2.0), 2025 67.3°F (+1.3), 2026 68.8°F (+2.7). 6 of 6 ran warmer than normal.

Grand Canyon National Park Airport: August in recent years against the 1991-2020 normal
AugustMeanAgainst normalPrecip.
202166.9°F+0.8°F0.71 in
202266.8°F+0.7°F4.89 in
202368.1°F+2.0°F3.53 in
202468.1°F+2.0°F3.44 in
202567.3°F+1.3°F0.71 in
202668.8°F+2.7°F–

Source: records: ACIS, station USW00003195; recent months: ACIS, station USW00003195. Records and recent months use complete months only.

How does August in Grand Canyon National Park Airport compare across Arizona?

Across the 97 places PlainClimate covers in Arizona, August normal highs run from 73°F in Greer to 109°F in Bullhead City; Grand Canyon National Park Airport's is 83°F.

Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.

Other months and places