- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On September 13 in WILMETTE (CGS) the average high temperature is 73.1 °F (22.9 °C). The lowest recored high temperature was 59.9 °F (15.5 °C) in 1989 and the highest recored high temperature was 81.9 °F (27.7 °C) in 1990. The high temperature is usually* between 67.4 °F (19.7 °C) and 78.9 °F (26.0 °C). About a quarter of the time, the high temperature is less than 67.4 °F (19.7 °C), and another quarter of the time, the high temperature is greater than and 78.9 °F (26.0 °C). About 95% of the time, the high temperature has been between 56.6 °F (13.7 °C) and 89.7 °F (32.1 °C).
Low Temperatures
On September 13 in WILMETTE (CGS) the average low temperature is 59.6 °F (15.3 °C). The lowest recored low temperature was 52.0 °F (11.1 °C) in 1987 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 1990. The low temperature is usually* between 54.9 °F (12.7 °C) and 64.2 °F (17.9 °C). About a quarter of the time, the low temperature is less than 54.9 °F (12.7 °C), and another quarter of the time, the low temperature is greater than and 64.2 °F (17.9 °C). About 95% of the time, the low temperature has been between 46.0 °F (7.8 °C) and 73.1 °F (22.9 °C).
Frost
On September 13 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