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Rockford, IL Weather on May 26
May 26th in Rockford, IL typically brings pleasant spring weather, with average highs around 74°F and lows near 51°F. Over 55 years of records, the warmest May 26th was in 1978 (79°F average), while the coldest was 1992 (45°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 38% of May 26th dates historically, with the wettest May 26th recording 3.1" of rain. The last decade has been 10.0°F warmer on this date compared to 20-30 years ago.
What to Expect on May 26
Planning for May 26th in Rockford, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
May 26 Weather Records for Rockford
- •The all-time record high for May 26th in Rockford, IL is 91°F, set in 1978.
- •The coldest May 26th on record dropped to 34°F in 1979.
- •Temperatures have reached 90°F or higher on May 26th in 2 of the last 55 years.
- •Last year (1971), May 26th was 19°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest May 26 ever in Rockford?
The warmest May 26 in Rockford, IL reached 91°F in 1978. That is 17°F above the long-term average high of 74°F.
What was the coldest May 26 ever in Rockford?
The coldest May 26 in Rockford, IL dropped to 34°F in 1979. That is 17°F below the long-term average low of 51°F.
What is the average temperature on May 26 in Rockford?
On May 26, Rockford averages a high of 74°F and a low of 51°F based on 55 years of NOAA weather observations from ROCKFORD GTR ROCKFORD AP.
How many years of weather data are available for May 26 in Rockford?
We have 55 years of weather records for May 26 in Rockford, IL, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
May 26 Weather History in Rockford
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 71°F | 43°F | 0" | -- |
| 2024 | 76°F | 53°F | 1.12" | -- |
| 2023 | 75°F | 42°F | 0" | -- |
| 2022 | 78°F | 62°F | 0.97" | -- |
| 2021 | 82°F | 57°F | 0.58" | -- |
| 2020 | 87°F | 65°F | 0" | -- |
| 2019 | 79°F | 57°F | 0.1" | -- |
| 2018 | 89°F | 62°F | 0" | -- |
| 2017 | 70°F | 54°F | 0.89" | -- |
| 2016 | 84°F | 65°F | 0.76" | -- |
| 2015 | 76°F | 64°F | 0.61" | -- |
| 2014 | 86°F | 63°F | 0.43" | -- |
| 2013 | 66°F | 45°F | 0.48" | -- |
| 2012 | 88°F | 59°F | 0.18" | -- |
| 2011 | 63°F | 43°F | 0" | -- |
| 2010 | 85°F | 63°F | 0" | -- |
| 2009 | 77°F | 56°F | 3.1" | -- |
| 2008 | 82°F | 52°F | 1.07" | -- |
| 2007 | 67°F | 50°F | 0.91" | -- |
| 2006 | 83°F | 61°F | 0" | -- |
| 2005 | 75°F | 50°F | 0" | -- |
| 2004 | 66°F | 47°F | 0" | -- |
| 2003 | 76°F | 46°F | 0" | -- |
| 2002 | 73°F | 41°F | 0" | -- |
| 2001 | 55°F | 45°F | 0.53" | -- |
| 2000 | 71°F | 49°F | 1.02" | -- |
| 1999 | 73°F | 48°F | 0" | -- |
| 1998 | 78°F | 47°F | 0" | -- |
| 1997 | 58°F | 45°F | 0" | -- |
| 1996 | 61°F | 49°F | 0.13" | -- |
| 1995 | 70°F | 43°F | 0" | -- |
| 1994 | 63°F | 43°F | 0" | -- |
| 1993 | 78°F | 41°F | 0" | -- |
| 1992 | 56°F | 35°F | 0" | -- |
| 1991 | 81°F | 67°F | 0" | -- |
| 1990 | 68°F | 55°F | 0" | -- |
| 1989 | 69°F | 49°F | 0" | -- |
| 1988 | 78°F | 40°F | 0" | -- |
| 1987 | 86°F | 59°F | 0" | -- |
| 1986 | 70°F | 58°F | 0.69" | -- |
| 1985 | 90°F | 64°F | 0.46" | -- |
| 1984 | 63°F | 46°F | 0" | -- |
| 1983 | 65°F | 36°F | 0" | -- |
| 1982 | 70°F | 56°F | 2.51" | -- |
| 1981 | 79°F | 51°F | 0.03" | -- |
| 1980 | 79°F | 52°F | 0" | -- |
| 1979 | 67°F | 34°F | 0" | -- |
| 1978 | 91°F | 66°F | 0" | -- |
| 1977 | 89°F | 61°F | 0" | -- |
| 1976 | 73°F | 42°F | 0" | -- |
| 1975 | 78°F | 58°F | 0.48" | -- |
| 1974 | 69°F | 51°F | 0" | -- |
| 1973 | 72°F | 44°F | 0" | -- |
| 1972 | 86°F | 57°F | 0" | -- |
| 1971 | 55°F | 41°F | 0" | -- |
Based on 55 years of data from NOAA station: ROCKFORD GTR ROCKFORD AP
Monthly Climate Averages
Historical temperature and precipitation averages for Rockford, IL, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.