- Latitude: 42.121
- Longitude: -87.905
High Temperatures
On September 27 in this location the average high temperature is 71.0 °F (21.7 °C). The lowest recored high temperature was 53.1 °F (11.7 °C) in 1984 and the highest recored high temperature was 91.9 °F (33.3 °C) in 2017. The high temperature is usually* between 65.6 °F (18.7 °C) and 76.4 °F (24.7 °C). About a quarter of the time, the high temperature is less than 65.6 °F (18.7 °C), and another quarter of the time, the high temperature is greater than and 76.4 °F (24.7 °C). About 95% of the time, the high temperature has been between 55.3 °F (12.9 °C) and 86.7 °F (30.4 °C).
Low Temperatures
On September 27 in this location the average low temperature is 51.1 °F (10.6 °C). The lowest recored low temperature was 32.4 °F (0.2 °C) in 1947 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 1998. The low temperature is usually* between 46.0 °F (7.8 °C) and 56.3 °F (13.5 °C). About a quarter of the time, the low temperature is less than 46.0 °F (7.8 °C), and another quarter of the time, the low temperature is greater than and 56.3 °F (13.5 °C). About 95% of the time, the low temperature has been between 36.1 °F (2.3 °C) and 66.2 °F (19.0 °C).
Frost
On September 27 in this location expect the temperatures to drop below freezing for a risk of frost about 0.6% of the time.
Data Source(s)
The data used to compute the average high/low temperatures for this location were taken from the following stations:
- CHICAGO O'HARE INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 725300 — Weather Bureau Army Navy (WBAN): 94846 — from year 1947 to 2024
- PALWAUKEE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 744665 — Weather Bureau Army Navy (WBAN): 04838 — from year 2006 to 2024
- WAUKEGAN HARBOR — Integrated Surface Dataset (ISD) station ID: 997735 — from year 2007 to 2023
- FOSTER AVE CHICAGO — Integrated Surface Dataset (ISD) station ID: 998497 — from year 2015 to 2020
- PALWAUKEE MUNI — Integrated Surface Dataset (ISD) station ID: 744665 — from year 1995 to 2005
- ANN ARBOR MUNICIPAL — Integrated Surface Dataset (ISD) station ID: 725374 — from year 1999 to 2005
- CHIGAGO-WAUKEE ARPT — Integrated Surface Dataset (ISD) station ID: 725339 — from year 2001 to 2001
- WILMETTE (MARINES)& — Integrated Surface Dataset (ISD) station ID: 725307 — from year 1976 to 1995
- NAVAL AIR STATION — Integrated Surface Dataset (ISD) station ID: 725306 — Weather Bureau Army Navy (WBAN): 14855 — from year 1973 to 1994
- WILMETTE (CGS) — Integrated Surface Dataset (ISD) station ID: 722417 — from year 1987 to 1990
- NAVAL AIR STATION — Weather Bureau Army Navy (WBAN): 14855 — from year 1945 to 1972
- CHICAGO OHARE INTL AP — Weather Bureau Army Navy (WBAN): 94846 — from year 1970 to 1972
- PARK RIDGE AF — Weather Bureau Army Navy (WBAN): 14810 — from year 1949 to 1958