Weather on August 21
Grand Rapids, MI
55 Years of Data
Avg High
80°F
Avg Low
58°F
Warmest
2003
80°F avg
Coldest
2015
58°F avg
About This Date
August 21st in Grand Rapids, MI typically brings warm summer weather, with average highs around 80°F and lows near 58°F. Over 55 years of records, the warmest August 21st was in 2003 (80°F average), while the coldest was 2015 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 21st dates historically, with the wettest August 21st recording 3.05" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Grand Rapids, MI? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 60° | 69° | — | — |
| 2024 | 71° | 47° | 59° | — | — |
| 2023 | 89° | 63° | 76° | — | — |
| 2022 | 79° | 62° | 70° | 3.05" | — |
| 2021 | 88° | 64° | 76° | — | — |
| 2020 | 83° | 58° | 70° | — | — |
| 2019 | 84° | 64° | 74° | 0.08" | — |
| 2018 | 79° | 63° | 71° | 0.38" | — |
| 2017 | 84° | 55° | 70° | — | — |
| 2016 | 77° | 63° | 70° | 2.44" | — |
| 2015coldest | 67° | 50° | 58° | 0.64" | — |
| 2014 | 80° | 64° | 72° | — | — |
| 2013 | 89° | 66° | 78° | 0.05" | — |
| 2012 | 79° | 51° | 65° | — | — |
| 2011 | 79° | 57° | 68° | — | — |
| 2010 | 83° | 71° | 77° | 1.57" | — |
| 2009 | 74° | 61° | 67° | 0.15" | — |
| 2008 | 87° | 55° | 71° | — | — |
| 2007 | 72° | 59° | 65° | 0.08" | — |
| 2006 | 80° | 53° | 67° | — | — |
| 2005 | 77° | 61° | 69° | — | — |
| 2004 | 71° | 46° | 59° | — | — |
| 2003warmest | 92° | 68° | 80° | 0.15" | — |
| 2002 | 82° | 56° | 69° | — | — |
| 2001 | 80° | 53° | 67° | — | — |
| 2000 | 74° | 48° | 61° | — | — |
| 1999 | 81° | 54° | 67° | — | — |
| 1998 | 89° | 70° | 79° | — | — |
| 1997 | 67° | 55° | 61° | 0.05" | — |
| 1996 | 85° | 65° | 75° | — | — |
| 1995 | 86° | 59° | 73° | — | — |
| 1994 | 77° | 62° | 70° | — | — |
| 1993 | 77° | 56° | 66° | — | — |
| 1992 | 78° | 48° | 63° | — | — |
| 1991 | 78° | 52° | 65° | — | — |
| 1990 | 69° | 63° | 66° | 1.27" | — |
| 1989 | 80° | 61° | 70° | — | — |
| 1988 | 79° | 54° | 66° | — | — |
| 1987 | 82° | 64° | 73° | 0.43" | — |
| 1986 | 81° | 57° | 69° | — | — |
| 1985 | 71° | 53° | 62° | — | — |
| 1984 | 85° | 54° | 69° | — | — |
| 1983 | 86° | 60° | 73° | 1.7" | — |
| 1982 | 74° | 53° | 63° | — | — |
| 1981 | 84° | 56° | 70° | — | — |
| 1980 | 83° | 69° | 76° | — | — |
| 1979 | 81° | 60° | 70° | — | — |
| 1978 | 77° | 49° | 63° | — | — |
| 1977 | 68° | 58° | 63° | 0.56" | — |
| 1976 | 90° | 59° | 74° | — | — |
| 1975 | 87° | 62° | 75° | 0.69" | — |
| 1974 | 87° | 61° | 74° | — | — |
| 1973 | 75° | 52° | 63° | — | — |
| 1972 | 89° | 65° | 77° | — | — |
| 1971 | 90° | 62° | 76° | — | — |
55 years of data from E GRAND RAPIDS