Weather on March 18
Rockford, IL
55 Years of Data
Avg High
46°F
Avg Low
28°F
Warmest
2012
67°F avg
Coldest
2023
18°F avg
About This Date
March 18th in Rockford, IL typically brings chilly spring weather, with average highs around 46°F and lows near 28°F. Over 56 years of records, the warmest March 18th was in 2012 (67°F average), while the coldest was 2023 (18°F) — a 49°F range across recorded history. Precipitation has occurred on 39% of recorded March 18th dates, with snow falling 13% of the time (heaviest snowfall: 5.1"). The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for March 18th in Rockford, IL? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 40° | 21° | 30° | 0.1" | 0.8" |
| 2025 | 68° | 37° | 53° | — | — |
| 2024 | 39° | 23° | 31° | — | — |
| 2023coldest | 25° | 11° | 18° | — | — |
| 2022 | 50° | 39° | 45° | 1.35" | — |
| 2021 | 53° | 34° | 43° | 0.05" | — |
| 2020 | 44° | 37° | 41° | 0.3" | — |
| 2019 | 46° | 25° | 36° | 0.03" | — |
| 2018 | 56° | 24° | 40° | — | — |
| 2017 | 47° | 30° | 39° | — | — |
| 2016 | 48° | 30° | 39° | — | — |
| 2015 | 50° | 25° | 38° | — | — |
| 2014 | 49° | 29° | 39° | — | — |
| 2013 | 34° | 19° | 26° | 0.3" | 1" |
| 2012warmest | 81° | 54° | 67° | — | — |
| 2011 | 52° | 33° | 42° | — | — |
| 2010 | 62° | 32° | 47° | — | — |
| 2009 | 58° | 38° | 48° | — | — |
| 2008 | 43° | 36° | 39° | 0.1" | — |
| 2007 | 47° | 21° | 34° | — | — |
| 2006 | 41° | 22° | 31° | — | — |
| 2005 | 46° | 30° | 38° | 0.23" | — |
| 2004 | 42° | 27° | 34° | 0.18" | — |
| 2003 | 55° | 39° | 47° | — | — |
| 2002 | 49° | 33° | 41° | — | — |
| 2001 | 43° | 19° | 31° | — | — |
| 2000 | 40° | 25° | 32° | — | — |
| 1999 | 47° | 29° | 38° | — | — |
| 1998 | 43° | 36° | 39° | 0.51" | — |
| 1997 | 38° | 25° | 31° | — | — |
| 1996 | 47° | 20° | 33° | — | — |
| 1995 | 66° | 31° | 48° | 0.03" | — |
| 1994 | 40° | 24° | 32° | 0.03" | — |
| 1993 | 32° | 9° | 20° | — | — |
| 1992 | 38° | 30° | 34° | — | — |
| 1991 | 47° | 35° | 41° | 0.05" | — |
| 1990 | 42° | 25° | 33° | 0.03" | 0.1" |
| 1989 | 26° | 17° | 22° | 0.03" | 0.3" |
| 1988 | 41° | 24° | 33° | — | — |
| 1987 | 40° | 36° | 38° | 1.12" | — |
| 1986 | 55° | 42° | 49° | 0.41" | — |
| 1985 | 47° | 18° | 32° | — | — |
| 1984 | 33° | 26° | 30° | — | — |
| 1983 | 39° | 33° | 36° | 2.64" | 2.1" |
| 1982 | 47° | 33° | 40° | — | — |
| 1981 | 34° | 18° | 26° | — | — |
| 1980 | 51° | 20° | 35° | — | — |
| 1979 | 50° | 38° | 44° | 0.48" | — |
| 1978 | 39° | 14° | 27° | — | — |
| 1977 | 36° | 26° | 31° | 0.1" | 0.3" |
| 1976 | 70° | 31° | 50° | — | — |
| 1975 | 53° | 36° | 44° | — | — |
| 1974 | 48° | 31° | 39° | 0.15" | — |
| 1973 | 44° | 25° | 34° | — | — |
| 1972 | 42° | 31° | 36° | — | — |
| 1971 | 35° | 33° | 34° | 1.73" | 5.1" |
56 years of data from ROCKFORD GTR ROCKFORD AP