Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On August 31 in WILMETTE (CGS) the average high temperature is 76.0 °F (24.5 °C). The lowest recored high temperature was 72.9 °F (22.7 °C) in 1987 and the highest recored high temperature was 77.9 °F (25.5 °C) in 1988. The high temperature is usually* between 74.2 °F (23.5 °C) and 77.9 °F (25.5 °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 77.9 °F (25.5 °C). About 95% of the time, the high temperature has been between 70.8 °F (21.6 °C) and 81.3 °F (27.4 °C).
Low Temperatures
On August 31 in WILMETTE (CGS) the average low temperature is 61.7 °F (16.5 °C). The lowest recored low temperature was 55.9 °F (13.3 °C) in 1990 and the lowest recored low temperature was 64.9 °F (18.3 °C) in 1989. The low temperature is usually* between 58.3 °F (14.6 °C) and 65.2 °F (18.4 °C). About a quarter of the time, the low temperature is less than 58.3 °F (14.6 °C), and another quarter of the time, the low temperature is greater than and 65.2 °F (18.4 °C). About 95% of the time, the low temperature has been between 51.8 °F (11.0 °C) and 71.7 °F (22.0 °C).
Frost
On August 31 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