- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On June 12 in WILMETTE (CGS) the average high temperature is 78.9 °F (26.1 °C). The lowest recored high temperature was 61.9 °F (16.6 °C) in 1989 and the highest recored high temperature was 88.0 °F (31.1 °C) in 1988. The high temperature is usually* between 71.3 °F (21.8 °C) and 86.5 °F (30.3 °C). About a quarter of the time, the high temperature is less than 71.3 °F (21.8 °C), and another quarter of the time, the high temperature is greater than and 86.5 °F (30.3 °C). About 95% of the time, the high temperature has been between 56.8 °F (13.8 °C) and 101.0 °F (38.4 °C).
Low Temperatures
On June 12 in WILMETTE (CGS) the average low temperature is 61.9 °F (16.6 °C). The lowest recored low temperature was 58.8 °F (14.9 °C) in 1989 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 1987. The low temperature is usually* between 56.9 °F (13.8 °C) and 66.9 °F (19.4 °C). About a quarter of the time, the low temperature is less than 56.9 °F (13.8 °C), and another quarter of the time, the low temperature is greater than and 66.9 °F (19.4 °C). About 95% of the time, the low temperature has been between 47.4 °F (8.6 °C) and 76.4 °F (24.7 °C).
Frost
On June 12 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