Weather on August 21
Elgin, IL
55 Years of Data
Avg High
81°F
Avg Low
60°F
Warmest
2010
81°F avg
Coldest
1992
62°F avg
About This Date
August 21st in Elgin, IL typically brings warm summer weather, with average highs around 81°F and lows near 60°F. Over 55 years of records, the warmest August 21st was in 2010 (81°F average), while the coldest was 1992 (62°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 27% of August 21st dates historically, with the wettest August 21st recording 5.44" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Elgin, IL? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 62° | 70° | — | — |
| 2024 | 78° | 52° | 65° | — | — |
| 2023 | 92° | 67° | 79° | — | — |
| 2022 | 74° | 64° | 69° | 0.43" | — |
| 2021 | 89° | 69° | 79° | — | — |
| 2020 | 83° | 55° | 69° | — | — |
| 2019 | 78° | 63° | 70° | 0.71" | — |
| 2018 | 78° | 66° | 72° | 0.3" | — |
| 2017 | 85° | 61° | 73° | — | — |
| 2016 | 78° | 58° | 68° | 2.59" | — |
| 2015 | 73° | 53° | 63° | — | — |
| 2014 | 86° | 62° | 74° | 0.18" | — |
| 2013 | 86° | 54° | 70° | — | — |
| 2012 | 77° | 51° | 64° | 1.68" | — |
| 2011 | 79° | 62° | 70° | 5.44" | — |
| 2010warmest | 91° | 71° | 81° | — | — |
| 2009 | 77° | 61° | 69° | 0.2" | — |
| 2008 | 83° | 64° | 73° | — | — |
| 2007 | 77° | 58° | 67° | 0.1" | — |
| 2006 | 80° | 53° | 67° | — | — |
| 2005 | 86° | 64° | 75° | 0.05" | — |
| 2004 | 76° | 52° | 64° | — | — |
| 2003 | 91° | 68° | 80° | — | — |
| 2002 | 78° | 57° | 68° | — | — |
| 2001 | 80° | 55° | 68° | — | — |
| 2000 | 76° | 56° | 66° | — | — |
| 1999 | 77° | 54° | 65° | — | — |
| 1998 | 87° | 62° | 75° | — | — |
| 1997 | 66° | 58° | 62° | — | — |
| 1996 | 82° | 67° | 74° | — | — |
| 1995 | 84° | 62° | 73° | — | — |
| 1994 | 75° | 61° | 68° | — | — |
| 1993 | 79° | 60° | 69° | — | — |
| 1992coldest | 76° | 49° | 62° | — | — |
| 1991 | 76° | 53° | 64° | — | — |
| 1990 | 77° | 66° | 72° | 1.57" | — |
| 1989 | 83° | 60° | 71° | — | — |
| 1988 | 82° | 60° | 71° | — | — |
| 1987 | 82° | 61° | 71° | 0.81" | — |
| 1986 | 85° | 57° | 71° | — | — |
| 1985 | — | 47° | — | — | — |
| 1984 | 81° | 56° | 68° | — | — |
| 1983 | 88° | 67° | 77° | — | — |
| 1982 | 83° | 55° | 69° | — | — |
| 1981 | 77° | 55° | 66° | — | — |
| 1980 | 90° | 67° | 78° | 0.84" | — |
| 1979 | 78° | 64° | 71° | — | — |
| 1978 | 79° | 54° | 66° | — | — |
| 1977 | 73° | 57° | 65° | 0.05" | — |
| 1976 | 85° | 60° | 72° | — | — |
| 1975 | 91° | 59° | 75° | 1.73" | — |
| 1974 | 86° | 66° | 76° | — | — |
| 1973 | 81° | 52° | 66° | — | — |
| 1972 | 86° | 69° | 78° | — | — |
| 1971 | 90° | 66° | 78° | — | — |
55 years of data from ELGIN WATER