- Latitude: 43.041
- Longitude: -88.237
High Temperatures
On May 20 in this location the average high temperature is 68.5 °F (20.3 °C). The lowest recored high temperature was 44.6 °F (7.0 °C) in 2002 and the highest recored high temperature was 91.9 °F (33.3 °C) in 1975. The high temperature is usually* between 61.6 °F (16.4 °C) and 75.4 °F (24.1 °C). About a quarter of the time, the high temperature is less than 61.6 °F (16.4 °C), and another quarter of the time, the high temperature is greater than and 75.4 °F (24.1 °C). About 95% of the time, the high temperature has been between 48.4 °F (9.1 °C) and 88.5 °F (31.4 °C).
Low Temperatures
On May 20 in this location the average low temperature is 47.9 °F (8.8 °C). The lowest recored low temperature was 33.8 °F (1.0 °C) in 2015 and the lowest recored low temperature was 70.0 °F (21.1 °C) in 1975. The low temperature is usually* between 43.2 °F (6.2 °C) and 52.6 °F (11.4 °C). About a quarter of the time, the low temperature is less than 43.2 °F (6.2 °C), and another quarter of the time, the low temperature is greater than and 52.6 °F (11.4 °C). About 95% of the time, the low temperature has been between 34.2 °F (1.2 °C) and 61.6 °F (16.4 °C).
Frost
On May 20 in this location expect the temperatures to drop below freezing for a risk of frost about 1.2% 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:
- GENERAL MITCHELL INTERNATIONA — Integrated Surface Dataset (ISD) station ID: 726400 — Weather Bureau Army Navy (WBAN): 14839 — from year 1948 to 2025
- LAWRENCE J TIMMERMAN AIRPORT — Integrated Surface Dataset (ISD) station ID: 726405 — Weather Bureau Army Navy (WBAN): 94869 — from year 1974 to 2025
- WAUKESHA COUNTY AIRPORT — Integrated Surface Dataset (ISD) station ID: 726409 — Weather Bureau Army Navy (WBAN): 04897 — from year 2006 to 2025
- MILWAUKEE — Integrated Surface Dataset (ISD) station ID: 997342 — from year 2006 to 2025
- WAUKESHA CO — Integrated Surface Dataset (ISD) station ID: 726409 — from year 1998 to 2005
- LAWRENCE J TIMMERMAN — Integrated Surface Dataset (ISD) station ID: 726405 — from year 2000 to 2004
- MILWAUKEE COAST GUARD LIGHT S — Integrated Surface Dataset (ISD) station ID: 726407 — from year 1977 to 1995
- MILWAUKEE NB SIDE PO — Weather Bureau Army Navy (WBAN): 14839 — from year 1965 to 1972
- MILWAUKEE TIMMERMAN — Weather Bureau Army Navy (WBAN): 94869 — from year 1968 to 1972