Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On September 29 in WILMETTE (CGS) the average high temperature is 67.6 °F (19.8 °C). The lowest recored high temperature was 61.0 °F (16.1 °C) in 1990 and the highest recored high temperature was 76.8 °F (24.9 °C) in 1987. The high temperature is usually* between 63.2 °F (17.3 °C) and 72.1 °F (22.3 °C). About a quarter of the time, the high temperature is less than 63.2 °F (17.3 °C), and another quarter of the time, the high temperature is greater than and 72.1 °F (22.3 °C). About 95% of the time, the high temperature has been between 54.8 °F (12.6 °C) and 80.5 °F (27.0 °C).
Low Temperatures
On September 29 in WILMETTE (CGS) the average low temperature is 54.8 °F (12.7 °C). The lowest recored low temperature was 54.0 °F (12.2 °C) in 1990 and the lowest recored low temperature was 59.9 °F (15.5 °C) in 1989. The low temperature is usually* between 48.6 °F (9.2 °C) and 61.1 °F (16.2 °C). About a quarter of the time, the low temperature is less than 48.6 °F (9.2 °C), and another quarter of the time, the low temperature is greater than and 61.1 °F (16.2 °C). About 95% of the time, the low temperature has been between 36.7 °F (2.6 °C) and 73.0 °F (22.8 °C).
Frost
On September 29 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 0.7% 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