Weather on September 4
Rockford, IL
55 Years of Data
Avg High
79°F
Avg Low
56°F
Warmest
2018
81°F avg
Coldest
1974
54°F avg
About This Date
September 4th in Rockford, IL typically brings pleasant fall weather, with average highs around 79°F and lows near 56°F. Over 55 years of records, the warmest September 4th was in 2018 (81°F average), while the coldest was 1974 (54°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 4th dates historically, with the wettest September 4th recording 6.05" of rain. 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 September 4th in Rockford, IL? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 42° | 54° | — | — |
| 2024 | 80° | 48° | 64° | — | — |
| 2023 | 92° | 66° | 79° | — | — |
| 2022 | 71° | 62° | 67° | — | — |
| 2021 | 75° | 57° | 66° | 0.03" | — |
| 2020 | 82° | 48° | 65° | — | — |
| 2019 | 70° | 55° | 62° | — | — |
| 2018warmest | 90° | 72° | 81° | 0.3" | — |
| 2017 | 77° | 56° | 66° | — | — |
| 2016 | 80° | 59° | 70° | — | — |
| 2015 | 90° | 68° | 79° | — | — |
| 2014 | 84° | 69° | 77° | 2.03" | — |
| 2013 | 84° | 51° | 68° | — | — |
| 2012 | 96° | 63° | 79° | 1.04" | — |
| 2011 | 71° | 56° | 63° | — | — |
| 2010 | 68° | 48° | 58° | — | — |
| 2009 | 77° | 50° | 64° | — | — |
| 2008 | 62° | 57° | 60° | 6.05" | — |
| 2007 | 90° | 59° | 74° | — | — |
| 2006 | 71° | 53° | 62° | 1.83" | — |
| 2005 | 79° | 58° | 68° | — | — |
| 2004 | 83° | 59° | 71° | — | — |
| 2003 | 76° | 51° | 63° | — | — |
| 2002 | 84° | 53° | 69° | — | — |
| 2001 | 80° | 56° | 68° | — | — |
| 2000 | 70° | 53° | 61° | — | — |
| 1999 | 91° | 64° | 78° | — | — |
| 1998 | 82° | 59° | 71° | — | — |
| 1997 | 71° | 41° | 56° | — | — |
| 1996 | 84° | 59° | 72° | — | — |
| 1995 | 85° | 57° | 71° | — | — |
| 1994 | 61° | 54° | 57° | 0.08" | — |
| 1993 | 77° | 49° | 63° | — | — |
| 1992 | 78° | 50° | 64° | — | — |
| 1991 | 79° | 54° | 66° | — | — |
| 1990 | 92° | 64° | 78° | — | — |
| 1989 | 75° | 58° | 66° | — | — |
| 1988 | 71° | 55° | 63° | 2.16" | — |
| 1987 | 82° | 51° | 67° | — | — |
| 1986 | 80° | 53° | 67° | — | — |
| 1985 | 85° | 68° | 76° | — | — |
| 1984 | 73° | 44° | 59° | 0.18" | — |
| 1983 | 90° | 62° | 76° | — | — |
| 1982 | 77° | 44° | 61° | — | — |
| 1981 | 77° | 53° | 65° | — | — |
| 1980 | 80° | 58° | 69° | 0.3" | — |
| 1979 | 80° | 54° | 67° | — | — |
| 1978 | 82° | 53° | 68° | — | — |
| 1977 | 86° | 64° | 75° | 0.13" | — |
| 1976 | 79° | 56° | 67° | — | — |
| 1975 | 72° | 56° | 64° | — | — |
| 1974coldest | 69° | 39° | 54° | — | — |
| 1973 | 78° | 68° | 73° | 4.83" | — |
| 1972 | 70° | 45° | 57° | — | — |
| 1971 | 91° | 70° | 80° | 3.58" | — |
55 years of data from ROCKFORD GTR ROCKFORD AP