- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On September 18 in WILMETTE (MARINES)& the average high temperature is 75.9 °F (24.4 °C). The lowest recored high temperature was 63.0 °F (17.2 °C) in 1995 and the highest recored high temperature was 82.0 °F (27.8 °C) in 1977. The high temperature is usually* between 70.7 °F (21.5 °C) and 81.1 °F (27.3 °C). About a quarter of the time, the high temperature is less than 70.7 °F (21.5 °C), and another quarter of the time, the high temperature is greater than and 81.1 °F (27.3 °C). About 95% of the time, the high temperature has been between 60.8 °F (16.0 °C) and 91.0 °F (32.8 °C).
Low Temperatures
On September 18 in WILMETTE (MARINES)& the average low temperature is 54.1 °F (12.3 °C). The lowest recored low temperature was 48.9 °F (9.4 °C) in 1995 and the lowest recored low temperature was 64.9 °F (18.3 °C) in 1977. The low temperature is usually* between 48.6 °F (9.2 °C) and 59.6 °F (15.3 °C). About a quarter of the time, the low temperature is less than 48.6 °F (9.2 °C), and another quarter of the time, the low temperature is greater than and 59.6 °F (15.3 °C). About 95% of the time, the low temperature has been between 38.1 °F (3.4 °C) and 70.1 °F (21.2 °C).
Frost
On September 18 in WILMETTE (MARINES)& expect the temperatures to drop below freezing for a risk of frost about 0.3% 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 (MARINES)& — Integrated Surface Dataset (ISD) station ID: 725307 — from year 1976 to 1995