Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On August 15 in WILMETTE (CGS) the average high temperature is 82.7 °F (28.2 °C). The lowest recored high temperature was 70.9 °F (21.6 °C) in 1989 and the highest recored high temperature was 91.9 °F (33.3 °C) in 1988. The high temperature is usually* between 76.5 °F (24.7 °C) and 89.0 °F (31.6 °C). About a quarter of the time, the high temperature is less than 76.5 °F (24.7 °C), and another quarter of the time, the high temperature is greater than and 89.0 °F (31.6 °C). About 95% of the time, the high temperature has been between 64.7 °F (18.2 °C) and 100.8 °F (38.2 °C).
Low Temperatures
On August 15 in WILMETTE (CGS) the average low temperature is 66.8 °F (19.3 °C). The lowest recored low temperature was 50.9 °F (10.5 °C) in 1990 and the lowest recored low temperature was 70.9 °F (21.6 °C) in 1988. The low temperature is usually* between 61.5 °F (16.4 °C) and 72.1 °F (22.3 °C). About a quarter of the time, the low temperature is less than 61.5 °F (16.4 °C), and another quarter of the time, the low temperature is greater than and 72.1 °F (22.3 °C). About 95% of the time, the low temperature has been between 51.3 °F (10.7 °C) and 82.3 °F (27.9 °C).
Frost
On August 15 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