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Joliet, IL Weather on May 27
May 27th in Joliet, IL typically brings pleasant spring weather, with average highs around 75°F and lows near 53°F. Over 53 years of records, the warmest May 27th was in 2012 (78°F average), while the coldest was 1992 (44°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 34% of May 27th dates historically, with the wettest May 27th recording 8.38" of rain. The last decade has been 7.2°F warmer on this date compared to 20-30 years ago.
What to Expect on May 27
Planning for May 27th in Joliet, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
May 27 Weather Records for Joliet
- •The all-time record high for May 27th in Joliet, IL is 92°F, set in 1985.
- •The coldest May 27th on record dropped to 35°F in 1992.
- •Temperatures have reached 90°F or higher on May 27th in 2 of the last 53 years.
- •Last year (1971), May 27th was 8°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest May 27 ever in Joliet?
The warmest May 27 in Joliet, IL reached 92°F in 1985. That is 17°F above the long-term average high of 75°F.
What was the coldest May 27 ever in Joliet?
The coldest May 27 in Joliet, IL dropped to 35°F in 1992. That is 18°F below the long-term average low of 53°F.
What is the average temperature on May 27 in Joliet?
On May 27, Joliet averages a high of 75°F and a low of 53°F based on 53 years of NOAA weather observations from JOLIET.
How many years of weather data are available for May 27 in Joliet?
We have 53 years of weather records for May 27 in Joliet, 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 27 Weather History in Joliet
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 70°F | 54°F | 0" | -- |
| 2024 | 75°F | 58°F | 1.78" | -- |
| 2023 | 72°F | 46°F | 0" | -- |
| 2022 | 75°F | 57°F | 2.29" | -- |
| 2021 | 79°F | 57°F | 0" | -- |
| 2020 | 86°F | 67°F | 0" | -- |
| 2019 | 77°F | 54°F | 0.36" | -- |
| 2018 | 90°F | 66°F | 0" | -- |
| 2017 | 65°F | 54°F | 0.58" | -- |
| 2016 | 84°F | 66°F | 0" | -- |
| 2015 | 79°F | 65°F | 1.65" | -- |
| 2014 | 87°F | 63°F | 0.28" | -- |
| 2013 | 63°F | 47°F | 1.07" | -- |
| 2012 | 89°F | 66°F | 0" | -- |
| 2011 | 53°F | 43°F | 0.28" | -- |
| 2010 | 87°F | 66°F | 0" | -- |
| 2009 | 78°F | 60°F | 8.38" | -- |
| 2008 | 80°F | 43°F | 0.03" | -- |
| 2007 | 71°F | 54°F | 2.34" | -- |
| 2006 | 82°F | 42°F | 0" | -- |
| 2005 | 74°F | 56°F | 0" | -- |
| 2004 | 69°F | 53°F | 0" | -- |
| 2003 | 74°F | 48°F | 0" | -- |
| 2002 | 74°F | 42°F | 0" | -- |
| 2001 | 67°F | 46°F | 4.45" | -- |
| 2000 | 73°F | 56°F | 0.76" | -- |
| 1999 | 73°F | 47°F | 0" | -- |
| 1998 | 80°F | 51°F | 0" | -- |
| 1997 | 60°F | 49°F | 0" | -- |
| 1996 | 62°F | 51°F | 1.02" | -- |
| 1995 | 69°F | 48°F | 0" | -- |
| 1994 | 57°F | 37°F | 0" | -- |
| 1993 | 78°F | 47°F | 0" | -- |
| 1992 | 53°F | 35°F | 0" | -- |
| 1991 | 89°F | 65°F | 0" | -- |
| 1990 | 65°F | 55°F | 0" | -- |
| 1989 | 72°F | 48°F | 0" | -- |
| 1988 | 78°F | 45°F | 0" | -- |
| 1987 | 85°F | 64°F | 0" | -- |
| 1986 | 68°F | 56°F | 1.85" | -- |
| 1985 | 92°F | 62°F | 1.45" | -- |
| 1984 | 66°F | 48°F | 0" | -- |
| 1983 | 65°F | 39°F | 0" | -- |
| 1981 | 78°F | 57°F | 0.33" | -- |
| 1980 | 75°F | 50°F | 0" | -- |
| 1979 | 71°F | 44°F | 0" | -- |
| 1978 | 89°F | 65°F | 0" | -- |
| 1977 | 86°F | 60°F | 0" | -- |
| 1976 | 75°F | 52°F | 0" | -- |
| 1974 | 73°F | 41°F | -- | -- |
| 1973 | 73°F | 58°F | 1.17" | -- |
| 1972 | 89°F | 54°F | 0" | -- |
| 1971 | 67°F | 35°F | 0" | -- |
Based on 53 years of data from NOAA station: JOLIET
Monthly Climate Averages
Historical temperature and precipitation averages for Joliet, IL, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.