Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On August 18 in WILMETTE (CGS) the average high temperature is 83.5 °F (28.6 °C). The lowest recored high temperature was 73.9 °F (23.3 °C) in 1989 and the highest recored high temperature was 95.9 °F (35.5 °C) in 1988. The high temperature is usually* between 77.5 °F (25.3 °C) and 89.6 °F (32.0 °C). About a quarter of the time, the high temperature is less than 77.5 °F (25.3 °C), and another quarter of the time, the high temperature is greater than and 89.6 °F (32.0 °C). About 95% of the time, the high temperature has been between 66.0 °F (18.9 °C) and 101.0 °F (38.4 °C).
Low Temperatures
On August 18 in WILMETTE (CGS) the average low temperature is 67.5 °F (19.7 °C). The lowest recored low temperature was 63.9 °F (17.7 °C) in 1989 and the lowest recored low temperature was 70.0 °F (21.1 °C) in 1988. The low temperature is usually* between 63.6 °F (17.6 °C) and 71.4 °F (21.9 °C). About a quarter of the time, the low temperature is less than 63.6 °F (17.6 °C), and another quarter of the time, the low temperature is greater than and 71.4 °F (21.9 °C). About 95% of the time, the low temperature has been between 56.2 °F (13.5 °C) and 78.8 °F (26.0 °C).
Frost
On August 18 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