Weather on October 21
Elgin, IL
55 Years of Data
Avg High
61°F
Avg Low
39°F
Warmest
1979
70°F avg
Coldest
1976
36°F avg
About This Date
October 21st in Elgin, IL typically brings mild fall weather, with average highs around 61°F and lows near 39°F. Over 54 years of records, the warmest October 21st was in 1979 (70°F average), while the coldest was 1976 (36°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 30% of October 21st dates historically, with the wettest October 21st recording 1.02" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Elgin, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 38° | 52° | 0.1" | — |
| 2024 | 79° | 45° | 62° | — | — |
| 2023 | 60° | 41° | 51° | — | — |
| 2022 | 63° | 32° | 47° | — | — |
| 2021 | 72° | 49° | 60° | 0.1" | — |
| 2020 | 49° | 37° | 43° | 0.25" | — |
| 2019 | 67° | 45° | 56° | — | — |
| 2018 | 50° | 24° | 37° | — | — |
| 2017 | 77° | 42° | 60° | — | — |
| 2016 | 62° | 39° | 51° | — | — |
| 2015 | 71° | 54° | 62° | 0.36" | — |
| 2014 | 66° | 43° | 54° | — | — |
| 2013 | 59° | 34° | 46° | — | — |
| 2012 | 58° | 34° | 46° | — | — |
| 2011 | 46° | 34° | 40° | 0.03" | — |
| 2010 | 70° | 39° | 54° | — | — |
| 2009 | 60° | 48° | 54° | 0.2" | — |
| 2008 | 55° | 35° | 45° | 0.43" | — |
| 2007 | 75° | 44° | 60° | — | — |
| 2006 | 60° | 31° | 45° | 0.05" | — |
| 2005 | 55° | 39° | 47° | — | — |
| 2004 | 52° | 48° | 50° | — | — |
| 2003 | 84° | 51° | 68° | — | — |
| 2002 | 52° | 28° | 40° | — | — |
| 2001 | 68° | 43° | 55° | — | — |
| 2000 | 78° | 45° | 61° | — | — |
| 1999 | 53° | 34° | 43° | — | — |
| 1998 | 59° | 39° | 49° | — | — |
| 1997 | 52° | 33° | 42° | — | — |
| 1996 | 60° | 29° | 44° | — | — |
| 1995 | 66° | 37° | 52° | 0.25" | — |
| 1994 | 64° | 38° | 51° | — | — |
| 1993 | 59° | 38° | 48° | 0.53" | — |
| 1992 | 59° | 37° | 48° | — | — |
| 1991 | 53° | 30° | 42° | — | — |
| 1990 | 65° | 46° | 55° | 0.05" | — |
| 1989 | 41° | 32° | 37° | 0.13" | — |
| 1988 | 49° | 35° | 42° | — | — |
| 1987 | 53° | 31° | 42° | 0.2" | — |
| 1986 | 72° | 53° | 62° | — | — |
| 1985 | 58° | 49° | 53° | 0.03" | — |
| 1984 | 55° | 42° | 49° | 1.02" | — |
| 1983 | 51° | 44° | 48° | 0.66" | — |
| 1982 | 47° | 28° | 37° | — | — |
| 1981 | 68° | 43° | 55° | — | — |
| 1980 | 58° | 40° | 49° | — | — |
| 1979warmest | 78° | 62° | 70° | — | — |
| 1978 | 73° | 37° | 55° | — | — |
| 1977 | 63° | 35° | 49° | — | — |
| 1976coldest | 44° | 29° | 36° | — | — |
| 1975 | 74° | 40° | 57° | — | — |
| 1974 | 53° | 26° | 40° | — | — |
| 1973 | 61° | 36° | 48° | — | — |
| 1971 | 70° | 59° | 64° | — | — |
54 years of data from ELGIN WATER