Weather on April 18
Rockford, IL
55 Years of Data
Avg High
65°F
Avg Low
40°F
Warmest
2002
77°F avg
Coldest
1983
30°F avg
About This Date
April 18th in Rockford, IL typically brings mild spring weather, with average highs around 65°F and lows near 40°F — a 25°F daily swing. Over 55 years of records, the warmest April 18th was in 2002 (77°F average), while the coldest was 1983 (30°F) — a 47°F range across recorded history. Precipitation has occurred on 38% of recorded April 18th dates, with snow falling 5% of the time. The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
Planning for April 18th in Rockford, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 54° | 64° | 0.2" | — |
| 2024 | 56° | 41° | 48° | 0.53" | — |
| 2023 | 58° | 31° | 45° | — | — |
| 2022 | 44° | 34° | 39° | 0.23" | 0.6" |
| 2021 | 64° | 36° | 50° | — | — |
| 2020 | 59° | 33° | 46° | — | — |
| 2019 | 63° | 44° | 53° | — | — |
| 2018 | 35° | 27° | 31° | 0.48" | 1" |
| 2017 | 75° | 43° | 59° | — | — |
| 2016 | 83° | 48° | 65° | — | — |
| 2015 | 73° | 49° | 61° | — | — |
| 2014 | 61° | 34° | 47° | — | — |
| 2013 | 62° | 37° | 50° | 4.11" | — |
| 2012 | 72° | 42° | 57° | 0.05" | — |
| 2011 | 45° | 34° | 39° | 1.19" | — |
| 2010 | 62° | 32° | 47° | — | — |
| 2009 | 71° | 42° | 57° | — | — |
| 2008 | 70° | 54° | 62° | 1.17" | — |
| 2007 | 54° | 39° | 46° | — | — |
| 2006 | 67° | 41° | 54° | — | — |
| 2005 | 83° | 48° | 65° | — | — |
| 2004 | 84° | 55° | 70° | — | — |
| 2003 | 51° | 40° | 45° | — | — |
| 2002warmest | 91° | 62° | 77° | 0.91" | — |
| 2001 | 55° | 26° | 41° | — | — |
| 2000 | 56° | 40° | 48° | — | — |
| 1999 | 50° | 35° | 43° | 0.03" | — |
| 1998 | 60° | 33° | 47° | — | — |
| 1997 | 54° | 29° | 41° | 0.86" | — |
| 1996 | 75° | 48° | 62° | 0.66" | — |
| 1995 | 73° | 45° | 59° | 1.55" | — |
| 1994 | 85° | 52° | 68° | — | — |
| 1993 | 65° | 40° | 52° | — | — |
| 1992 | 64° | 41° | 53° | 0.23" | — |
| 1991 | 57° | 37° | 47° | — | — |
| 1990 | 56° | 22° | 39° | — | — |
| 1989 | 54° | 33° | 43° | 0.38" | 1" |
| 1988 | 51° | 30° | 41° | — | — |
| 1987 | 77° | 46° | 62° | — | — |
| 1986 | 69° | 38° | 53° | — | — |
| 1985 | 86° | 62° | 74° | 0.03" | — |
| 1984 | 47° | 36° | 41° | — | — |
| 1983coldest | 39° | 22° | 30° | — | — |
| 1982 | 65° | 32° | 48° | — | — |
| 1981 | 65° | 43° | 54° | — | — |
| 1980 | 71° | 31° | 51° | — | — |
| 1979 | 64° | 33° | 49° | — | — |
| 1978 | 63° | 42° | 52° | 1.52" | — |
| 1977 | 88° | 51° | 69° | 0.05" | — |
| 1976 | 72° | 54° | 63° | 0.05" | — |
| 1975 | 70° | 39° | 54° | 0.79" | — |
| 1974 | 65° | 36° | 50° | — | — |
| 1973 | 69° | 47° | 58° | 0.51" | — |
| 1972 | 77° | 49° | 63° | — | — |
| 1971 | 63° | 43° | 53° | — | — |
55 years of data from ROCKFORD GTR ROCKFORD AP