Weather on September 20
Grand Rapids, MI
55 Years of Data
About This Date
September 20th in Grand Rapids, MI typically brings pleasant fall weather, with average highs around 72°F and lows near 51°F. Over 56 years of records, the warmest September 20th was in 1978 (78°F average), while the coldest was 1991 (47°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 39% of September 20th dates historically, with the wettest September 20th recording 1.21" 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 September 20th in Grand Rapids, MI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 62° | 54° | 58° | 0.54" | — |
| 2025 | 83° | 58° | 70° | — | — |
| 2024 | 85° | 55° | 70° | — | — |
| 2023 | 68° | 45° | 56° | 0.08" | — |
| 2022 | 79° | 53° | 66° | — | — |
| 2021 | 84° | 54° | 69° | — | — |
| 2020 | 62° | 34° | 48° | — | — |
| 2019 | 83° | 56° | 69° | — | — |
| 2018 | 77° | 58° | 67° | 1" | — |
| 2017 | 73° | 61° | 67° | — | — |
| 2016 | 84° | 52° | 68° | — | — |
| 2015 | 69° | 45° | 57° | — | — |
| 2014 | 77° | 58° | 67° | 0.2" | — |
| 2013 | 74° | 62° | 68° | 0.03" | — |
| 2012 | 69° | 52° | 60° | 0.11" | — |
| 2011 | 73° | 48° | 61° | — | — |
| 2010 | 68° | 55° | 62° | — | — |
| 2009 | 77° | 43° | 60° | — | — |
| 2008 | 80° | 53° | 67° | — | — |
| 2007 | 81° | 54° | 67° | — | — |
| 2006 | 60° | 41° | 51° | — | — |
| 2005 | 78° | 58° | 68° | — | — |
| 2004 | 77° | 49° | 63° | — | — |
| 2003 | 68° | 46° | 57° | — | — |
| 2002 | 74° | 63° | 68° | 0.21" | — |
| 2001 | 66° | 55° | 61° | 0.06" | — |
| 2000 | 69° | 51° | 60° | 0.63" | — |
| 1999 | 67° | 47° | 57° | 0.02" | — |
| 1998 | 86° | 64° | 75° | — | — |
| 1997 | 67° | 45° | 56° | — | — |
| 1996 | 76° | 46° | 61° | — | — |
| 1995 | 62° | 51° | 57° | 0.03" | — |
| 1994 | 83° | 48° | 65° | — | — |
| 1993 | 59° | 49° | 54° | 1.21" | — |
| 1992 | 69° | 41° | 55° | 0.48" | — |
| 1991coldest | 56° | 38° | 47° | — | — |
| 1990 | 71° | 46° | 59° | — | — |
| 1989 | 76° | 48° | 62° | — | — |
| 1988 | 59° | 53° | 56° | 0.14" | — |
| 1987 | 62° | 51° | 57° | 0.27" | — |
| 1986 | 68° | 58° | 63° | 0.02" | — |
| 1985 | 82° | 60° | 71° | — | — |
| 1984 | 78° | 55° | 67° | — | — |
| 1983 | 74° | 50° | 62° | 0.71" | — |
| 1982 | 59° | 44° | 52° | 0.01" | — |
| 1981 | 65° | 39° | 52° | — | — |
| 1980 | 76° | 64° | 70° | 0.27" | — |
| 1979 | 76° | 40° | 58° | — | — |
| 1978warmest | 86° | 69° | 78° | 0.25" | — |
| 1977 | 62° | 53° | 58° | — | — |
| 1976 | 67° | 43° | 55° | — | — |
| 1975 | 67° | 49° | 58° | 0.12" | — |
| 1974 | 58° | 49° | 53° | — | — |
| 1973 | 60° | 41° | 51° | — | — |
| 1972 | 77° | 56° | 66° | — | — |
| 1971 | 63° | 48° | 55° | 0.47" | — |
Grand Rapids, MI Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Grand Rapids, MI Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Grand Rapids, MI Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Grand Rapids, MI
Most pleasant months in Grand Rapids, MI: May, June, August, September.