Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On June 21 in WILMETTE (CGS) the average high temperature is 84.6 °F (29.2 °C). The lowest recored high temperature was 77.9 °F (25.5 °C) in 1987 and the highest recored high temperature was 101.8 °F (38.8 °C) in 1988. The high temperature is usually* between 75.7 °F (24.3 °C) and 93.6 °F (34.2 °C). About a quarter of the time, the high temperature is less than 75.7 °F (24.3 °C), and another quarter of the time, the high temperature is greater than and 93.6 °F (34.2 °C). About 95% of the time, the high temperature has been between 58.7 °F (14.9 °C) and 110.5 °F (43.6 °C).
Low Temperatures
On June 21 in WILMETTE (CGS) the average low temperature is 71.4 °F (21.9 °C). The lowest recored low temperature was 63.0 °F (17.2 °C) in 1990 and the lowest recored low temperature was 77.9 °F (25.5 °C) in 1988. The low temperature is usually* between 65.9 °F (18.9 °C) and 76.9 °F (24.9 °C). About a quarter of the time, the low temperature is less than 65.9 °F (18.9 °C), and another quarter of the time, the low temperature is greater than and 76.9 °F (24.9 °C). About 95% of the time, the low temperature has been between 55.5 °F (13.1 °C) and 87.3 °F (30.7 °C).
Frost
On June 21 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