Weather on August 18
Grand Rapids, MI
55 Years of Data
Avg High
80°F
Avg Low
59°F
Warmest
1983
80°F avg
Coldest
1977
58°F avg
About This Date
August 18th in Grand Rapids, MI typically brings warm summer weather, with average highs around 80°F and lows near 59°F. Over 55 years of records, the warmest August 18th was in 1983 (80°F average), while the coldest was 1977 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 42% of August 18th dates historically, with the wettest August 18th recording 4.39" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Grand Rapids, MI? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 60° | 72° | — | — |
| 2024 | 78° | 65° | 71° | 0.66" | — |
| 2023 | 76° | 53° | 64° | 0.94" | — |
| 2022 | 82° | 56° | 69° | — | — |
| 2021 | 84° | 62° | 73° | — | — |
| 2020 | 82° | 57° | 70° | — | — |
| 2019 | 84° | 61° | 72° | 0.13" | — |
| 2018 | 77° | 63° | 70° | 0.2" | — |
| 2017 | 80° | 66° | 73° | 0.41" | — |
| 2016 | 82° | 60° | 71° | 0.79" | — |
| 2015 | 90° | 64° | 77° | — | — |
| 2014 | 81° | 60° | 70° | — | — |
| 2013 | 82° | 55° | 69° | — | — |
| 2012 | 75° | 48° | 62° | — | — |
| 2011 | 83° | 63° | 73° | 0.03" | — |
| 2010 | 82° | 62° | 72° | — | — |
| 2009 | 82° | 64° | 73° | 0.1" | — |
| 2008 | 87° | 65° | 76° | — | — |
| 2007 | 72° | 50° | 61° | 0.61" | — |
| 2006 | 83° | 68° | 75° | — | — |
| 2005 | 77° | 66° | 72° | 1.19" | — |
| 2004 | 77° | 62° | 70° | 0.03" | — |
| 2003 | 80° | 57° | 69° | — | — |
| 2002 | 74° | 57° | 65° | — | — |
| 2001 | 78° | 60° | 69° | 0.05" | — |
| 2000 | 76° | 56° | 66° | — | — |
| 1999 | 72° | 62° | 67° | — | — |
| 1998 | 79° | 56° | 67° | — | — |
| 1997 | 72° | 54° | 63° | — | — |
| 1996 | 85° | 56° | 70° | — | — |
| 1995 | 84° | 71° | 78° | — | — |
| 1994 | 80° | 56° | 68° | — | — |
| 1993 | 85° | 62° | 73° | — | — |
| 1992 | 74° | 54° | 64° | 0.05" | — |
| 1991 | 79° | 59° | 69° | 1.63" | — |
| 1990 | 85° | 68° | 76° | 4.39" | — |
| 1989 | 76° | 50° | 63° | — | — |
| 1988 | 73° | 59° | 66° | 1.35" | — |
| 1987 | 77° | 58° | 67° | 0.41" | — |
| 1986 | 80° | 59° | 70° | — | — |
| 1985 | 74° | 59° | 66° | 0.76" | — |
| 1984 | 83° | 63° | 73° | 0.03" | — |
| 1983warmest | 89° | 71° | 80° | — | — |
| 1982 | 83° | 49° | 66° | — | — |
| 1981 | 80° | 47° | 63° | — | — |
| 1980 | 82° | 59° | 71° | — | — |
| 1979 | 76° | 63° | 69° | 0.69" | — |
| 1978 | 83° | 66° | 74° | 0.05" | — |
| 1977coldest | 70° | 46° | 58° | — | — |
| 1976 | 88° | 48° | 68° | — | — |
| 1975 | 75° | 56° | 65° | — | — |
| 1974 | 80° | 54° | 67° | — | — |
| 1973 | 84° | 59° | 72° | 0.74" | — |
| 1972 | 89° | 69° | 79° | 0.64" | — |
| 1971 | 87° | 51° | 69° | — | — |
55 years of data from E GRAND RAPIDS