- Latitude: 41.65
- Longitude: -87.15
High Temperatures
On May 1 in this location the average high temperature is 62.8 °F (17.1 °C). The lowest recored high temperature was 43.0 °F (6.1 °C) in 2023 and the highest recored high temperature was 87.8 °F (31.0 °C) in 2007. The high temperature is usually* between 55.5 °F (13.1 °C) and 70.2 °F (21.2 °C). About a quarter of the time, the high temperature is less than 55.5 °F (13.1 °C), and another quarter of the time, the high temperature is greater than and 70.2 °F (21.2 °C). About 95% of the time, the high temperature has been between 41.6 °F (5.3 °C) and 84.1 °F (28.9 °C).
Low Temperatures
On May 1 in this location the average low temperature is 46.1 °F (7.8 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 2005 and the lowest recored low temperature was 66.2 °F (19.0 °C) in 2010. The low temperature is usually* between 41.2 °F (5.1 °C) and 51.1 °F (10.6 °C). About a quarter of the time, the low temperature is less than 41.2 °F (5.1 °C), and another quarter of the time, the low temperature is greater than and 51.1 °F (10.6 °C). About 95% of the time, the low temperature has been between 31.8 °F (-0.1 °C) and 60.5 °F (15.8 °C).
Frost
On May 1 in this location expect the temperatures to drop below freezing for a risk of frost about 2.7% 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 2016 to 2025
- MICHIGAN CITY MUNICIPAL AIRPO — Integrated Surface Dataset (ISD) station ID: 726358 — from year 1977 to 2017
- GARY CHICAGO — Integrated Surface Dataset (ISD) station ID: 725337 — from year 1982 to 2005
- PORTER CO MUNI — Integrated Surface Dataset (ISD) station ID: 725327 — from year 1999 to 2005
- CHICAGO / CALUMET COAST GUARD — Integrated Surface Dataset (ISD) station ID: 725344 — from year 1994 to 1996
- CALUMET (CGS) — Integrated Surface Dataset (ISD) station ID: 722418 — from year 1988 to 1990