- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On August 23 in WILMETTE (CGS) the average high temperature is 76.4 °F (24.7 °C). The lowest recored high temperature was 68.9 °F (20.5 °C) in 1987 and the highest recored high temperature was 84.9 °F (29.4 °C) in 1988. The high temperature is usually* between 71.8 °F (22.1 °C) and 81.0 °F (27.2 °C). About a quarter of the time, the high temperature is less than 71.8 °F (22.1 °C), and another quarter of the time, the high temperature is greater than and 81.0 °F (27.2 °C). About 95% of the time, the high temperature has been between 63.1 °F (17.3 °C) and 89.8 °F (32.1 °C).
Low Temperatures
On August 23 in WILMETTE (CGS) the average low temperature is 65.9 °F (18.8 °C). The lowest recored low temperature was 57.9 °F (14.4 °C) in 1987 and the lowest recored low temperature was 67.8 °F (19.9 °C) in 1988. The low temperature is usually* between 61.8 °F (16.6 °C) and 70.0 °F (21.1 °C). About a quarter of the time, the low temperature is less than 61.8 °F (16.6 °C), and another quarter of the time, the low temperature is greater than and 70.0 °F (21.1 °C). About 95% of the time, the low temperature has been between 54.1 °F (12.3 °C) and 77.7 °F (25.4 °C).
Frost
On August 23 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