Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On September 19 in WILMETTE (CGS) the average high temperature is 68.6 °F (20.3 °C). The lowest recored high temperature was 59.9 °F (15.5 °C) in 1990 and the highest recored high temperature was 73.9 °F (23.3 °C) in 1988. The high temperature is usually* between 65.1 °F (18.4 °C) and 72.1 °F (22.3 °C). About a quarter of the time, the high temperature is less than 65.1 °F (18.4 °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 58.5 °F (14.7 °C) and 78.7 °F (25.9 °C).
Low Temperatures
On September 19 in WILMETTE (CGS) the average low temperature is 56.8 °F (13.8 °C). The lowest recored low temperature was 52.9 °F (11.6 °C) in 1987 and the lowest recored low temperature was 65.8 °F (18.8 °C) in 1988. The low temperature is usually* between 52.3 °F (11.3 °C) and 61.3 °F (16.3 °C). About a quarter of the time, the low temperature is less than 52.3 °F (11.3 °C), and another quarter of the time, the low temperature is greater than and 61.3 °F (16.3 °C). About 95% of the time, the low temperature has been between 43.7 °F (6.5 °C) and 69.9 °F (21.1 °C).
Frost
On September 19 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