- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On July 17 in WILMETTE (CGS) the average high temperature is 80.4 °F (26.9 °C). The lowest recored high temperature was 74.8 °F (23.8 °C) in 1989 and the highest recored high temperature was 84.9 °F (29.4 °C) in 1990. The high temperature is usually* between 74.9 °F (23.8 °C) and 86.0 °F (30.0 °C). About a quarter of the time, the high temperature is less than 74.9 °F (23.8 °C), and another quarter of the time, the high temperature is greater than and 86.0 °F (30.0 °C). About 95% of the time, the high temperature has been between 64.3 °F (17.9 °C) and 96.6 °F (35.9 °C).
Low Temperatures
On July 17 in WILMETTE (CGS) the average low temperature is 67.4 °F (19.7 °C). The lowest recored low temperature was 61.9 °F (16.6 °C) in 1989 and the lowest recored low temperature was 70.9 °F (21.6 °C) in 1990. The low temperature is usually* between 63.8 °F (17.7 °C) and 71.1 °F (21.7 °C). About a quarter of the time, the low temperature is less than 63.8 °F (17.7 °C), and another quarter of the time, the low temperature is greater than and 71.1 °F (21.7 °C). About 95% of the time, the low temperature has been between 56.9 °F (13.9 °C) and 77.9 °F (25.5 °C).
Frost
On July 17 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