Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On July 20 in WILMETTE (CGS) the average high temperature is 75.2 °F (24.0 °C). The lowest recored high temperature was 67.8 °F (19.9 °C) in 1989 and the highest recored high temperature was 91.9 °F (33.3 °C) in 1987. The high temperature is usually* between 70.1 °F (21.2 °C) and 80.2 °F (26.8 °C). About a quarter of the time, the high temperature is less than 70.1 °F (21.2 °C), and another quarter of the time, the high temperature is greater than and 80.2 °F (26.8 °C). About 95% of the time, the high temperature has been between 60.5 °F (15.8 °C) and 89.8 °F (32.1 °C).
Low Temperatures
On July 20 in WILMETTE (CGS) the average low temperature is 66.5 °F (19.2 °C). The lowest recored low temperature was 65.8 °F (18.8 °C) in 1989 and the lowest recored low temperature was 77.9 °F (25.5 °C) in 1987. The low temperature is usually* between 63.0 °F (17.2 °C) and 70.1 °F (21.2 °C). About a quarter of the time, the low temperature is less than 63.0 °F (17.2 °C), and another quarter of the time, the low temperature is greater than and 70.1 °F (21.2 °C). About 95% of the time, the low temperature has been between 56.1 °F (13.4 °C) and 76.9 °F (25.0 °C).
Frost
On July 20 in WILMETTE (CGS) 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:
- WILMETTE (CGS) — Integrated Surface Dataset (ISD) station ID: 722417 — from year 1987 to 1990