Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On September 24 in WILMETTE (CGS) the average high temperature is 66.2 °F (19.0 °C). The lowest recored high temperature was 56.8 °F (13.8 °C) in 1989 and the highest recored high temperature was 68.9 °F (20.5 °C) in 1987. The high temperature is usually* between 62.0 °F (16.7 °C) and 70.4 °F (21.3 °C). About a quarter of the time, the high temperature is less than 62.0 °F (16.7 °C), and another quarter of the time, the high temperature is greater than and 70.4 °F (21.3 °C). About 95% of the time, the high temperature has been between 54.0 °F (12.2 °C) and 78.4 °F (25.8 °C).
Low Temperatures
On September 24 in WILMETTE (CGS) the average low temperature is 48.4 °F (9.1 °C). The lowest recored low temperature was 39.9 °F (4.4 °C) in 1990 and the lowest recored low temperature was 57.9 °F (14.4 °C) in 1987. The low temperature is usually* between 43.5 °F (6.4 °C) and 53.4 °F (11.9 °C). About a quarter of the time, the low temperature is less than 43.5 °F (6.4 °C), and another quarter of the time, the low temperature is greater than and 53.4 °F (11.9 °C). About 95% of the time, the low temperature has been between 34.1 °F (1.2 °C) and 62.8 °F (17.1 °C).
Frost
On September 24 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 1.2% 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