Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On August 17 in WILMETTE (CGS) the average high temperature is 84.3 °F (29.1 °C). The lowest recored high temperature was 72.9 °F (22.7 °C) in 1989 and the highest recored high temperature was 97.9 °F (36.6 °C) in 1988. The high temperature is usually* between 77.7 °F (25.4 °C) and 90.9 °F (32.7 °C). About a quarter of the time, the high temperature is less than 77.7 °F (25.4 °C), and another quarter of the time, the high temperature is greater than and 90.9 °F (32.7 °C). About 95% of the time, the high temperature has been between 65.1 °F (18.4 °C) and 103.5 °F (39.7 °C).
Low Temperatures
On August 17 in WILMETTE (CGS) the average low temperature is 68.6 °F (20.3 °C). The lowest recored low temperature was 58.8 °F (14.9 °C) in 1989 and the lowest recored low temperature was 81.0 °F (27.2 °C) in 1988. The low temperature is usually* between 64.4 °F (18.0 °C) and 72.7 °F (22.6 °C). About a quarter of the time, the low temperature is less than 64.4 °F (18.0 °C), and another quarter of the time, the low temperature is greater than and 72.7 °F (22.6 °C). About 95% of the time, the low temperature has been between 56.6 °F (13.7 °C) and 80.6 °F (27.0 °C).
Frost
On August 17 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