- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On September 15 in WILMETTE (MARINES)& the average high temperature is 77.4 °F (25.2 °C). The lowest recored high temperature was 63.0 °F (17.2 °C) in 1977 and the highest recored high temperature was 90.0 °F (32.2 °C) in 1994. The high temperature is usually* between 71.8 °F (22.1 °C) and 82.9 °F (28.3 °C). About a quarter of the time, the high temperature is less than 71.8 °F (22.1 °C), and another quarter of the time, the high temperature is greater than and 82.9 °F (28.3 °C). About 95% of the time, the high temperature has been between 61.3 °F (16.3 °C) and 93.4 °F (34.1 °C).
Low Temperatures
On September 15 in WILMETTE (MARINES)& the average low temperature is 61.1 °F (16.2 °C). The lowest recored low temperature was 55.9 °F (13.3 °C) in 1977 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 1994. The low temperature is usually* between 55.2 °F (12.9 °C) and 67.1 °F (19.5 °C). About a quarter of the time, the low temperature is less than 55.2 °F (12.9 °C), and another quarter of the time, the low temperature is greater than and 67.1 °F (19.5 °C). About 95% of the time, the low temperature has been between 43.8 °F (6.6 °C) and 78.4 °F (25.8 °C).
Frost
On September 15 in WILMETTE (MARINES)& 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 (MARINES)& — Integrated Surface Dataset (ISD) station ID: 725307 — from year 1976 to 1995