Weather on March 15
Rockford, IL
55 Years of Data
Avg High
47°F
Avg Low
27°F
Warmest
2012
68°F avg
Coldest
1979
15°F avg
About This Date
March 15th in Rockford, IL typically brings chilly spring weather, with average highs around 47°F and lows near 27°F. Over 56 years of records, the warmest March 15th was in 2012 (68°F average), while the coldest was 1979 (15°F) — a 53°F range across recorded history. Precipitation has occurred on 29% of recorded March 15th dates, with snow falling 9% of the time (heaviest snowfall: 2"). The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
Planning for March 15th in Rockford, IL? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 48° | 26° | 37° | 2.69" | 1.4" |
| 2025 | 60° | 35° | 48° | — | — |
| 2024 | 57° | 36° | 46° | — | — |
| 2023 | 48° | 18° | 33° | — | — |
| 2022 | 59° | 31° | 45° | — | — |
| 2021 | 39° | 29° | 34° | 0.76" | 2" |
| 2020 | 44° | 27° | 36° | — | — |
| 2019 | 43° | 30° | 37° | — | — |
| 2018 | 51° | 24° | 38° | — | — |
| 2017 | 32° | 14° | 23° | — | — |
| 2016 | 60° | 48° | 54° | 2.87" | — |
| 2015 | 63° | 27° | 45° | — | — |
| 2014 | 40° | 26° | 33° | 0.05" | 0.5" |
| 2013 | 37° | 25° | 31° | 0.15" | — |
| 2012warmest | 82° | 54° | 68° | 0.03" | — |
| 2011 | 54° | 28° | 41° | — | — |
| 2010 | 54° | 36° | 45° | — | — |
| 2009 | 59° | 26° | 43° | — | — |
| 2008 | 41° | 28° | 35° | — | — |
| 2007 | 42° | 24° | 33° | — | — |
| 2006 | 41° | 21° | 31° | — | — |
| 2005 | 42° | 16° | 29° | — | — |
| 2004 | 36° | 24° | 30° | 0.05" | 0.3" |
| 2003 | 56° | 28° | 42° | — | — |
| 2002 | 51° | 34° | 42° | — | — |
| 2001 | 41° | 32° | 37° | 1.02" | — |
| 2000 | 61° | 34° | 47° | 0.38" | — |
| 1999 | 41° | 19° | 30° | — | — |
| 1998 | 33° | 19° | 26° | 0.1" | — |
| 1997 | 23° | 8° | 16° | — | — |
| 1996 | 51° | 24° | 38° | — | — |
| 1995 | 73° | 37° | 55° | — | — |
| 1994 | 47° | 29° | 38° | — | — |
| 1993 | 47° | 10° | 28° | — | — |
| 1992 | 37° | 21° | 29° | — | — |
| 1991 | 46° | 22° | 34° | — | — |
| 1990 | 64° | 45° | 54° | 0.18" | — |
| 1989 | 38° | 23° | 30° | — | — |
| 1988 | 29° | 13° | 21° | — | — |
| 1987 | 36° | 31° | 33° | 0.05" | — |
| 1986 | 39° | 35° | 37° | — | — |
| 1985 | 50° | 24° | 37° | — | — |
| 1984 | 46° | 33° | 40° | 1.47" | — |
| 1983 | 45° | 29° | 37° | — | — |
| 1982 | 43° | 33° | 38° | — | — |
| 1981 | 62° | 29° | 45° | — | — |
| 1980 | 49° | 24° | 36° | — | — |
| 1979coldest | 24° | 5° | 15° | — | — |
| 1978 | 35° | 26° | 31° | — | — |
| 1977 | 62° | 41° | 52° | — | — |
| 1976 | 37° | 22° | 29° | — | — |
| 1975 | 37° | 11° | 24° | — | — |
| 1974 | 45° | 29° | 37° | 0.38" | — |
| 1973 | 54° | 44° | 49° | — | — |
| 1972 | 37° | 30° | 34° | 0.84" | — |
| 1971 | 45° | 27° | 36° | 0.08" | 0.3" |
56 years of data from ROCKFORD GTR ROCKFORD AP