Weather on August 31 at Grand Canyon
Grand Canyon National Park
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
August 31st in Grand Canyon National Park (via Flagstaff, AZ) typically brings pleasant summer weather, with average highs around 78°F and lows near 48°F — a 30°F daily swing. Over 55 years of records, the warmest August 31st was in 2019 (70°F average), while the coldest was 2000 (56°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 33% of August 31st dates historically, with the wettest August 31st recording 1.73" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for August 31st in Grand Canyon? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 82°F | 47°F | 0" | 0" |
| 2024 | 77°F | 52°F | 0.18" | 0" |
| 2023 | 85°F | 54°F | 0" | 0" |
| 2022 | 84°F | 50°F | 0" | 0" |
| 2021 | 73°F | 58°F | 0.41" | 0" |
| 2020 | 78°F | 54°F | 0" | 0" |
| 2019 | 89°F | 50°F | 0" | 0" |
| 2018 | 77°F | 46°F | 0" | 0" |
| 2017 | 80°F | 51°F | 0" | 0" |
| 2016 | 77°F | 46°F | 0" | 0" |
| 2015 | 75°F | 50°F | 0" | 0" |
| 2014 | 79°F | 48°F | 0" | 0" |
| 2013 | 69°F | 55°F | 0.61" | 0" |
| 2012 | 78°F | 56°F | 0" | 0" |
| 2011 | 84°F | 51°F | 0" | 0" |
| 2010 | 73°F | 42°F | 0" | 0" |
| 2009 | 83°F | 49°F | 0" | 0" |
| 2008 | 70°F | 56°F | 0.38" | 0" |
| 2007 | 82°F | 52°F | 0.38" | 0" |
| 2006 | 75°F | 50°F | 0.43" | 0" |
| 2005 | 79°F | 44°F | 0" | 0" |
| 2004 | 80°F | 45°F | 0" | 0" |
| 2003 | 79°F | 48°F | 0.23" | -- |
| 2002 | 81°F | 44°F | 0" | 0" |
| 2001 | 76°F | 46°F | 0" | -- |
| 2000 | 69°F | 42°F | 0" | 0" |
| 1999 | 71°F | 51°F | 0.79" | -- |
| 1998 | 75°F | 55°F | 0.56" | -- |
| 1997 | 73°F | 48°F | 0" | -- |
| 1996 | 88°F | 45°F | 0" | -- |
| 1995 | 85°F | 49°F | 0" | 0" |
| 1994 | 75°F | 53°F | 0.43" | 0" |
| 1993 | 76°F | 46°F | 0" | 0" |
| 1992 | 71°F | 46°F | 0" | 0" |
| 1991 | 78°F | 54°F | 1.52" | 0" |
| 1990 | 75°F | 48°F | 0" | 0" |
| 1989 | 79°F | 46°F | 0" | 0" |
| 1988 | 71°F | 50°F | 1.73" | 0" |
| 1987 | 82°F | 41°F | 0" | 0" |
| 1986 | 75°F | 51°F | 0.86" | 0" |
| 1985 | 82°F | 54°F | 0.13" | 0" |
| 1984 | 84°F | 54°F | 0.2" | 0" |
| 1983 | 82°F | 47°F | 0.08" | 0" |
| 1982 | 84°F | 48°F | 0" | 0" |
| 1981 | 76°F | 51°F | 0.15" | 0" |
| 1980 | 76°F | 41°F | 0" | 0" |
| 1979 | 77°F | 38°F | 0" | 0" |
| 1978 | 81°F | 45°F | 0" | 0" |
| 1977 | 80°F | 46°F | 0" | 0" |
| 1976 | 87°F | 44°F | 0" | 0" |
| 1975 | 85°F | 45°F | 0" | 0" |
| 1974 | 85°F | 48°F | 0" | 0" |
| 1973 | 75°F | 40°F | 0" | 0" |
| 1972 | 74°F | 48°F | 0.1" | 0" |
| 1971 | 77°F | 48°F | 0" | 0" |