- Latitude: 41.65
- Longitude: -87.15
High Temperatures
On August 21 in this location the average high temperature is 79.7 °F (26.5 °C). The lowest recored high temperature was 69.6 °F (20.9 °C) in 2024 and the highest recored high temperature was 97.9 °F (36.6 °C) in 1983. The high temperature is usually* between 75.7 °F (24.3 °C) and 83.6 °F (28.7 °C). About a quarter of the time, the high temperature is less than 75.7 °F (24.3 °C), and another quarter of the time, the high temperature is greater than and 83.6 °F (28.7 °C). About 95% of the time, the high temperature has been between 68.2 °F (20.1 °C) and 91.2 °F (32.9 °C).
Low Temperatures
On August 21 in this location the average low temperature is 63.9 °F (17.7 °C). The lowest recored low temperature was 0.0 °F (-17.8 °C) in 1994 and the lowest recored low temperature was 77.0 °F (25.0 °C) in 2003. The low temperature is usually* between 59.7 °F (15.4 °C) and 68.2 °F (20.1 °C). About a quarter of the time, the low temperature is less than 59.7 °F (15.4 °C), and another quarter of the time, the low temperature is greater than and 68.2 °F (20.1 °C). About 95% of the time, the low temperature has been between 51.6 °F (10.9 °C) and 76.3 °F (24.6 °C).
Frost
On August 21 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:
- 9087044 - CALUMET IL — Integrated Surface Dataset (ISD) station ID: 997255 — from year 2005 to 2025
- MICHIGAN CITY — Integrated Surface Dataset (ISD) station ID: 997339 — from year 2005 to 2025
- PORTER COUNTY MUNICIPAL AIRPO — Integrated Surface Dataset (ISD) station ID: 725327 — Weather Bureau Army Navy (WBAN): 04846 — from year 2006 to 2025
- GARY/CHICAGO AIRPORT — Integrated Surface Dataset (ISD) station ID: 725337 — Weather Bureau Army Navy (WBAN): 04807 — from year 2006 to 2025
- BURNS HARBOR — Integrated Surface Dataset (ISD) station ID: 997787 — from year 2007 to 2025
- MICHIGAN CITY MUNICIPAL AIRPO — Integrated Surface Dataset (ISD) station ID: 726358 — Weather Bureau Army Navy (WBAN): 00384 — from year 2014 to 2025
- MICHIGAN CITY MUNICIPAL AIRPO — Integrated Surface Dataset (ISD) station ID: 726358 — from year 1977 to 2016
- GARY CHICAGO — Integrated Surface Dataset (ISD) station ID: 725337 — from year 1981 to 2005
- PORTER CO MUNI — Integrated Surface Dataset (ISD) station ID: 725327 — from year 2000 to 2005
- CHICAGO / CALUMET COAST GUARD — Integrated Surface Dataset (ISD) station ID: 725344 — from year 1994 to 1995
- CALUMET (CGS) — Integrated Surface Dataset (ISD) station ID: 722418 — from year 1987 to 1989