Weather on October 21
Rockford, IL
55 Years of Data
Avg High
61°F
Avg Low
40°F
Warmest
1979
75°F avg
Coldest
1976
34°F avg
About This Date
October 21st in Rockford, IL typically brings mild fall weather, with average highs around 61°F and lows near 40°F. Over 55 years of records, the warmest October 21st was in 1979 (75°F average), while the coldest was 1976 (34°F) — a 41°F range across recorded history. Rain or other precipitation has occurred on about 25% of October 21st dates historically, with the wettest October 21st recording 1.55" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Rockford, IL? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 52° | 41° | 46° | 0.05" | — |
| 2024 | 82° | 47° | 64° | — | — |
| 2023 | 64° | 39° | 52° | — | — |
| 2022 | 78° | 33° | 56° | — | — |
| 2021 | 59° | 41° | 50° | — | — |
| 2020 | 58° | 45° | 51° | 1.19" | — |
| 2019 | 67° | 49° | 58° | 0.56" | — |
| 2018 | 51° | 22° | 37° | — | — |
| 2017 | 78° | 58° | 68° | — | — |
| 2016 | 55° | 37° | 46° | — | — |
| 2015 | 72° | 52° | 62° | — | — |
| 2014 | 55° | 36° | 45° | — | — |
| 2013 | 51° | 30° | 41° | — | — |
| 2012 | 69° | 38° | 53° | — | — |
| 2011 | 57° | 33° | 45° | — | — |
| 2010 | 59° | 36° | 47° | — | — |
| 2009 | 72° | 54° | 63° | 0.03" | — |
| 2008 | 55° | 34° | 44° | — | — |
| 2007 | 80° | 56° | 68° | — | — |
| 2006 | 57° | 36° | 46° | 1.55" | — |
| 2005 | 62° | 42° | 52° | — | — |
| 2004 | 62° | 45° | 53° | — | — |
| 2003 | 66° | 46° | 56° | — | — |
| 2002 | 55° | 34° | 44° | — | — |
| 2001 | 67° | 44° | 55° | — | — |
| 2000 | 71° | 47° | 59° | — | — |
| 1999 | 67° | 33° | 50° | — | — |
| 1998 | 53° | 32° | 43° | 0.03" | — |
| 1997 | 47° | 32° | 39° | — | — |
| 1996 | 63° | 48° | 55° | — | — |
| 1995 | 40° | 35° | 37° | 0.1" | — |
| 1994 | 73° | 37° | 55° | — | — |
| 1993 | 53° | 35° | 44° | — | — |
| 1992 | 53° | 38° | 45° | — | — |
| 1991 | 67° | 35° | 51° | — | — |
| 1990 | 54° | 32° | 43° | 0.1" | — |
| 1989 | 61° | 30° | 45° | — | — |
| 1988 | 53° | 38° | 45° | 0.08" | — |
| 1987 | 44° | 31° | 37° | — | — |
| 1986 | 75° | 47° | 61° | — | — |
| 1985 | 63° | 50° | 56° | — | — |
| 1984 | 56° | 35° | 45° | 0.91" | — |
| 1983 | 53° | 47° | 50° | 0.46" | — |
| 1982 | 47° | 29° | 38° | — | — |
| 1981 | 53° | 36° | 44° | 0.23" | — |
| 1980 | 57° | 42° | 50° | — | — |
| 1979warmest | 80° | 69° | 75° | — | — |
| 1978 | 81° | 47° | 64° | — | — |
| 1977 | 73° | 42° | 58° | — | — |
| 1976coldest | 42° | 26° | 34° | — | — |
| 1975 | 74° | 42° | 58° | — | — |
| 1974 | 55° | 26° | 41° | — | — |
| 1973 | 67° | 37° | 52° | — | — |
| 1972 | 49° | 42° | 45° | 1.42" | — |
| 1971 | 68° | 64° | 66° | 0.05" | — |
55 years of data from ROCKFORD GTR ROCKFORD AP