Weather on December 30
Rockford, IL
55 Years of Data
About This Date
December 30th in Rockford, IL typically brings cold winter weather, with average highs around 32°F and lows near 17°F. Over 55 years of records, the warmest December 30th was in 2002 (45°F average), while the coldest was 1976 (-3°F) — a 48°F range across recorded history. Precipitation has occurred on 38% of recorded December 30th dates, with snow falling 31% of the time (heaviest snowfall: 1.9"). The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for December 30th in Rockford, IL? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 28° | 8° | 18° | 0.2" | 0.3" |
| 2024 | 38° | 30° | 34° | — | — |
| 2023 | 35° | 21° | 28° | — | — |
| 2022 | 54° | 22° | 38° | — | — |
| 2021 | 33° | 25° | 29° | — | — |
| 2020 | 37° | 26° | 32° | 0.36" | 0.5" |
| 2019 | 40° | 26° | 33° | 0.25" | 0.4" |
| 2018 | 34° | 18° | 26° | — | — |
| 2017 | 11° | -4° | 4° | — | — |
| 2016 | 37° | 22° | 30° | — | — |
| 2015 | 29° | 26° | 28° | — | 0.2" |
| 2014 | 19° | 5° | 12° | — | — |
| 2013 | 5° | -7° | -1° | 0.13" | 0.5" |
| 2012 | 34° | 8° | 21° | — | — |
| 2011 | 41° | 31° | 36° | 0.81" | — |
| 2010 | 41° | 36° | 38° | 0.03" | — |
| 2009 | 30° | 12° | 21° | 0.18" | 1.7" |
| 2008 | 37° | 19° | 28° | — | 0.5" |
| 2007 | 31° | 12° | 21° | 0.03" | 0.2" |
| 2006 | 50° | 35° | 43° | — | — |
| 2005 | 36° | 32° | 34° | 0.3" | 0.3" |
| 2004 | 56° | 25° | 40° | 0.03" | — |
| 2003 | 39° | 22° | 30° | — | — |
| 2002warmest | 58° | 32° | 45° | — | — |
| 2001 | 19° | 5° | 12° | — | — |
| 2000 | 31° | 17° | 24° | — | 0.2" |
| 1999 | 39° | 23° | 31° | — | — |
| 1998 | 14° | -2° | 6° | 0.03" | — |
| 1997 | 24° | 6° | 15° | — | — |
| 1996 | 31° | 18° | 24° | — | — |
| 1995 | 35° | 20° | 27° | 0.25" | 1.2" |
| 1994 | 34° | 20° | 27° | — | — |
| 1993 | 27° | -2° | 12° | 0.08" | 1.2" |
| 1992 | 41° | 34° | 37° | 1.8" | — |
| 1991 | 35° | 21° | 28° | — | — |
| 1990 | 14° | 1° | 8° | 0.13" | 0.7" |
| 1989 | 32° | 28° | 30° | 0.08" | 0.1" |
| 1988 | 32° | 13° | 22° | — | — |
| 1987 | 35° | 17° | 26° | — | — |
| 1986 | 36° | 30° | 33° | — | — |
| 1985 | 39° | 1° | 20° | — | — |
| 1984 | 32° | 19° | 26° | — | — |
| 1983 | 12° | -8° | 2° | — | — |
| 1982 | 30° | 15° | 23° | — | — |
| 1981 | 28° | 4° | 16° | — | — |
| 1980 | 32° | 28° | 30° | — | — |
| 1979 | 42° | 19° | 31° | — | — |
| 1978 | 34° | 14° | 24° | 0.56" | 1.9" |
| 1977 | 30° | 13° | 21° | — | — |
| 1976coldest | 4° | -10° | -3° | 0.05" | 0.4" |
| 1975 | 33° | 13° | 23° | 0.23" | 1.4" |
| 1974 | 35° | 20° | 27° | — | — |
| 1973 | 10° | 0° | 5° | — | — |
| 1972 | 46° | 33° | 40° | 1.07" | — |
| 1971 | 35° | 28° | 32° | 1.78" | — |