Weather on May 21 at Grand Canyon

Grand Canyon National Park

AZSouthwest7,000 ft elevation
Avg High68°F
Avg Low34°F
Warmest200562°F
Coldest197534°F

Based on 55 years of data from Flagstaff, AZ

Elevation Note: Grand Canyon sits at 7,000 ft. Expect temperatures 25°F cooler than the data shown below, which comes from Flagstaff, AZ at a lower elevation.

Planning Your Visit

May 21st in Grand Canyon National Park (via Flagstaff, AZ) typically brings mild spring weather, with average highs around 68°F and lows near 34°F — a 34°F daily swing. Over 55 years of records, the warmest May 21st was in 2005 (62°F average), while the coldest was 1975 (34°F) — a 28°F range across recorded history. Precipitation has occurred on 15% of recorded May 21st dates, with snow falling 2% of the time (heaviest snowfall: 4.7"). The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.

The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.

Planning for May 21st in Grand Canyon? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202577°F34°F0"0"
202469°F30°F0"0"
202367°F37°F0"0"
202267°F42°F0"0"
202157°F37°F1.24"0"
202067°F26°F0"0"
201949°F30°F0.03"0"
201869°F32°F0"0"
201772°F29°F0"0"
201663°F46°F0"0"
201562°F36°F0"0"
201462°F33°F0"0"
201373°F30°F0"0"
201281°F36°F0"0"
201165°F31°F0"0"
201073°F36°F0"0"
200965°F50°F0.41"0"
200865°F38°F0"0"
200768°F34°F0"0"
200677°F39°F0"0"
200582°F43°F0"0"
200466°F35°F0"0"
200380°F35°F0"--
200256°F32°F0"--
200172°F40°F0"0"
200080°F33°F0"--
199974°F29°F0"--
199860°F31°F0"--
199762°F43°F0.18"--
199675°F37°F0"0"
199570°F32°F0"0"
199471°F26°F0"0"
199372°F40°F0"0"
199259°F39°F0.1"0"
199169°F29°F0"0"
199077°F35°F0"0"
198978°F41°F0"0"
198875°F27°F0"0"
198758°F33°F0.13"0"
198669°F42°F0"0"
198565°F36°F0"0"
198477°F37°F0"0"
198373°F30°F0"0"
198275°F32°F0"0"
198164°F27°F0"0"
198073°F36°F0"0"
197969°F33°F0"0"
197874°F34°F0"0"
197770°F29°F0"0"
197665°F37°F0"0"
197542°F26°F1.32"4.7"
197471°F21°F0"0"
197367°F36°F0.05"0"
197258°F24°F0"0"
197161°F45°F0"0"

May 21 at Nearby Parks

Holiday Weather at Grand Canyon

Official NPS WebsiteVisit nps.gov/grca for park information, alerts, and reservations

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