Weather on December 21
Elgin, IL
55 Years of Data
About This Date
December 21st in Elgin, IL typically brings cold winter weather, with average highs around 32°F and lows near 16°F. Over 54 years of records, the warmest December 21st was in 2018 (43°F average), while the coldest was 1989 (-6°F) — a 49°F range across recorded history. Precipitation has occurred on 35% of recorded December 21st dates, with snow falling 19% of the time (heaviest snowfall: 6.4"). The last decade has been 8.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.9°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Elgin, IL? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 40° | 14° | 27° | — | — |
| 2024 | 32° | 10° | 21° | — | — |
| 2023 | 44° | 30° | 37° | — | — |
| 2022 | 30° | 8° | 19° | — | — |
| 2021 | 41° | 21° | 31° | — | — |
| 2020 | 41° | 31° | 36° | — | — |
| 2019 | 40° | 19° | 29° | — | — |
| 2018warmest | 48° | 37° | 43° | 0.25" | — |
| 2017 | 36° | 25° | 30° | — | — |
| 2016 | 28° | 16° | 22° | — | — |
| 2015 | 50° | 34° | 42° | 1.17" | — |
| 2014 | 32° | 27° | 29° | — | — |
| 2013 | 32° | 26° | 29° | 0.3" | — |
| 2012 | 45° | 23° | 34° | 1.75" | 1.2" |
| 2011 | 38° | 33° | 35° | 0.05" | — |
| 2010 | 28° | 11° | 19° | 0.89" | 3.3" |
| 2009 | 29° | 24° | 26° | 0.03" | 0.1" |
| 2008 | 26° | -8° | 9° | 0.18" | 0.7" |
| 2007 | 39° | 26° | 33° | 0.13" | — |
| 2006 | 39° | 24° | 32° | 1.09" | — |
| 2005 | 21° | 6° | 14° | — | — |
| 2004 | 28° | 13° | 20° | — | — |
| 2003 | 30° | 12° | 21° | — | — |
| 2002 | 34° | 27° | 30° | — | — |
| 2001 | 41° | 22° | 31° | — | — |
| 2000 | 18° | -2° | 8° | 0.51" | 4" |
| 1999 | 21° | 0° | 11° | — | — |
| 1998 | 33° | 27° | 30° | 0.13" | — |
| 1997 | 35° | 24° | 30° | — | — |
| 1996 | 21° | 1° | 11° | — | — |
| 1995 | 27° | 16° | 21° | — | — |
| 1994 | 39° | 24° | 32° | — | — |
| 1993 | 35° | 25° | 30° | — | — |
| 1992 | 24° | 11° | 17° | — | — |
| 1991 | 33° | 27° | 30° | 0.84" | 1" |
| 1990 | 47° | 29° | 38° | — | — |
| 1989coldest | 3° | -16° | -6° | 0.05" | 0.4" |
| 1988 | 55° | 28° | 42° | — | — |
| 1987 | 36° | 24° | 30° | — | — |
| 1986 | 39° | 23° | 31° | — | — |
| 1985 | 17° | -1° | 8° | — | — |
| 1984 | 34° | 12° | 23° | 0.28" | — |
| 1983 | 21° | 1° | 11° | — | — |
| 1982 | 32° | 15° | 24° | — | — |
| 1981 | 29° | 1° | 15° | 0.28" | 1" |
| 1980 | 9° | -4° | 2° | — | — |
| 1979 | 43° | 28° | 35° | — | — |
| 1978 | 34° | 12° | 23° | 0.41" | — |
| 1977 | 35° | 17° | 26° | 1.02" | 6.4" |
| 1976 | 25° | 0° | 12° | — | — |
| 1975 | 30° | 20° | 25° | — | — |
| 1974 | 32° | 13° | 22° | 0.25" | 1" |
| 1973 | 21° | -1° | 10° | — | — |
| 1971 | 34° | 25° | 29° | — | — |
Elgin, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Elgin, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Elgin, IL 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 Elgin, IL
Elgin, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.