Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On August 9 in WILMETTE (CGS) the average high temperature is 77.4 °F (25.2 °C). The lowest recored high temperature was 73.9 °F (23.3 °C) in 1990 and the highest recored high temperature was 88.0 °F (31.1 °C) in 1989. The high temperature is usually* between 74.2 °F (23.5 °C) and 80.6 °F (27.0 °C). About a quarter of the time, the high temperature is less than 74.2 °F (23.5 °C), and another quarter of the time, the high temperature is greater than and 80.6 °F (27.0 °C). About 95% of the time, the high temperature has been between 68.2 °F (20.1 °C) and 86.6 °F (30.4 °C).
Low Temperatures
On August 9 in WILMETTE (CGS) the average low temperature is 64.6 °F (18.1 °C). The lowest recored low temperature was 61.0 °F (16.1 °C) in 1990 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 1987. The low temperature is usually* between 60.2 °F (15.7 °C) and 69.0 °F (20.6 °C). About a quarter of the time, the low temperature is less than 60.2 °F (15.7 °C), and another quarter of the time, the low temperature is greater than and 69.0 °F (20.6 °C). About 95% of the time, the low temperature has been between 51.8 °F (11.0 °C) and 77.4 °F (25.2 °C).
Frost
On August 9 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