Weather on March 21 at Grand Canyon
Grand Canyon National Park
Based on 56 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
March 21st in Grand Canyon National Park (via Flagstaff, AZ) typically brings cool spring weather, with average highs around 54°F and lows near 25°F — a 29°F daily swing. Over 56 years of records, the warmest March 21st was in 2026 (56°F average), while the coldest was 2000 (23°F) — a 33°F range across recorded history. Precipitation has occurred on 25% of recorded March 21st dates, with snow falling 16% of the time (heaviest snowfall: 15.4"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for March 21st in Grand Canyon? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 79°F | 33°F | 0" | 0" |
| 2025 | 60°F | 22°F | 0" | 0" |
| 2024 | 58°F | 30°F | 0" | 0" |
| 2023 | 39°F | 33°F | 6.05" | 10.9" |
| 2022 | 52°F | 22°F | 0" | 0" |
| 2021 | 51°F | 25°F | 0" | 0" |
| 2020 | 44°F | 22°F | 0" | 0" |
| 2019 | 43°F | 30°F | 0.48" | 1.8" |
| 2018 | 61°F | 29°F | 0" | 0" |
| 2017 | 65°F | 30°F | 0" | 0" |
| 2016 | 65°F | 31°F | 0" | 0" |
| 2015 | 64°F | 26°F | 0" | 0" |
| 2014 | 58°F | 26°F | 0" | 0" |
| 2013 | 61°F | 31°F | 0" | 0" |
| 2012 | 55°F | 12°F | 0" | 0" |
| 2011 | 44°F | 27°F | 1.91" | 8" |
| 2010 | 59°F | 15°F | 0" | 0" |
| 2009 | 62°F | 29°F | 0" | 0" |
| 2008 | 60°F | 20°F | 0" | 0" |
| 2007 | 52°F | 41°F | 0.03" | 0" |
| 2006 | 33°F | 12°F | 0.66" | 5.9" |
| 2005 | 49°F | 23°F | 0" | 0" |
| 2004 | 70°F | 31°F | 0" | 0" |
| 2003 | 52°F | 29°F | 0" | -- |
| 2002 | 68°F | 19°F | 0" | -- |
| 2001 | 64°F | 30°F | 0" | 0" |
| 2000 | 28°F | 18°F | 0.48" | -- |
| 1999 | 60°F | 30°F | 0" | -- |
| 1998 | 61°F | 24°F | 0" | -- |
| 1997 | 70°F | 28°F | 0" | -- |
| 1996 | 61°F | 23°F | 0" | 0" |
| 1995 | 56°F | 36°F | 0.36" | 0" |
| 1994 | 57°F | 26°F | 0" | 0" |
| 1993 | 62°F | 26°F | 0" | 0" |
| 1992 | 40°F | 30°F | 2.01" | 5.4" |
| 1991 | 31°F | 20°F | 2.59" | 15.4" |
| 1990 | 66°F | 30°F | 0" | 0" |
| 1989 | 62°F | 29°F | 0" | 0" |
| 1988 | 63°F | 19°F | 0" | 0" |
| 1987 | 42°F | 15°F | 0" | 0" |
| 1986 | 61°F | 17°F | 0" | 0" |
| 1985 | 52°F | 24°F | 0" | 0" |
| 1984 | 63°F | 24°F | 0" | 0" |
| 1983 | 37°F | 25°F | 1.35" | 9" |
| 1982 | 47°F | 6°F | 0" | 0" |
| 1981 | 48°F | 16°F | 0" | 0" |
| 1980 | 45°F | 25°F | 0" | 0" |
| 1979 | 30°F | 24°F | 1.14" | 4.5" |
| 1978 | 60°F | 32°F | 0.36" | 0" |
| 1977 | 55°F | 19°F | 0" | 0" |
| 1976 | 55°F | 17°F | 0" | 0" |
| 1975 | 55°F | 35°F | 0" | 0" |
| 1974 | 54°F | 32°F | 0.08" | 0" |
| 1973 | 30°F | 18°F | 0.25" | 1" |
| 1972 | 65°F | 19°F | 0" | 0" |
| 1971 | 60°F | 19°F | 0" | 0" |