- Latitude: 42.121
- Longitude: -87.905
High Temperatures
On August 17 in this location the average high temperature is 82.3 °F (27.9 °C). The lowest recored high temperature was 69.1 °F (20.6 °C) in 1954 and the highest recored high temperature was 102.0 °F (38.9 °C) in 1988. The high temperature is usually* between 78.4 °F (25.8 °C) and 86.1 °F (30.1 °C). About a quarter of the time, the high temperature is less than 78.4 °F (25.8 °C), and another quarter of the time, the high temperature is greater than and 86.1 °F (30.1 °C). About 95% of the time, the high temperature has been between 71.1 °F (21.7 °C) and 93.5 °F (34.2 °C).
Low Temperatures
On August 17 in this location the average low temperature is 63.3 °F (17.4 °C). The lowest recored low temperature was 44.1 °F (6.7 °C) in 2004 and the lowest recored low temperature was 81.0 °F (27.2 °C) in 1988. The low temperature is usually* between 59.3 °F (15.2 °C) and 67.3 °F (19.6 °C). About a quarter of the time, the low temperature is less than 59.3 °F (15.2 °C), and another quarter of the time, the low temperature is greater than and 67.3 °F (19.6 °C). About 95% of the time, the low temperature has been between 51.7 °F (10.9 °C) and 74.9 °F (23.8 °C).
Frost
On August 17 in this location expect the temperatures to drop below freezing for a risk of frost about 0.0% 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 2025
- PALWAUKEE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 744665 — Weather Bureau Army Navy (WBAN): 04838 — from year 2006 to 2025
- WAUKEGAN HARBOR — Integrated Surface Dataset (ISD) station ID: 997735 — from year 2007 to 2025
- FOSTER AVE CHICAGO — Integrated Surface Dataset (ISD) station ID: 998497 — from year 2012 to 2019
- 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