October 17 - WILMETTE (CGS) - Weather History and Averages

Station: WILMETTE (CGS) (1987 to 1991)
Country: US
State: IL
Latitude: 42.067
Longitude: -87.683

High Temperatures

On October 17 in WILMETTE (CGS) the average high temperature is 62.4 °F (16.9 °C). The lowest recored high temperature was 48.9 °F (9.4 °C) in 1989 and the highest recored high temperature was 75.9 °F (24.4 °C) in 1990. The high temperature is usually^* between 55.8 °F (13.2 °C) and 68.9 °F (20.5 °C). About a quarter of the time, the high temperature is less than 55.8 °F (13.2 °C), and another quarter of the time, the high temperature is greater than and 68.9 °F (20.5 °C). About 95% of the time, the high temperature has been between 43.4 °F (6.3 °C) and 81.4 °F (27.4 °C).

Low Temperatures

On October 17 in WILMETTE (CGS) the average low temperature is 49.6 °F (9.8 °C). The lowest recored low temperature was 43.9 °F (6.6 °C) in 1989 and the lowest recored low temperature was 59.9 °F (15.5 °C) in 1990. The low temperature is usually^* between 44.6 °F (7.0 °C) and 54.6 °F (12.6 °C). About a quarter of the time, the low temperature is less than 44.6 °F (7.0 °C), and another quarter of the time, the low temperature is greater than and 54.6 °F (12.6 °C). About 95% of the time, the low temperature has been between 35.1 °F (1.7 °C) and 64.1 °F (17.8 °C).

Frost

On October 17 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 0.9% of the time.

^{Usually* in this context means around 50% of the
time, assuming a normal distribution of values.}

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 1988 to 1990

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