November 18 - 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 November 18 in WILMETTE (CGS) the average high temperature is 47.7 °F (8.7 °C). The lowest recored high temperature was 34.9 °F (1.6 °C) in 1989 and the highest recored high temperature was 46.9 °F (8.3 °C) in 1990. The high temperature is usually^* between 41.8 °F (5.5 °C) and 53.6 °F (12.0 °C). About a quarter of the time, the high temperature is less than 41.8 °F (5.5 °C), and another quarter of the time, the high temperature is greater than and 53.6 °F (12.0 °C). About 95% of the time, the high temperature has been between 30.6 °F (-0.8 °C) and 64.9 °F (18.3 °C).

Low Temperatures

On November 18 in WILMETTE (CGS) the average low temperature is 33.8 °F (1.0 °C). The lowest recored low temperature was 15.1 °F (-9.4 °C) in 1989 and the lowest recored low temperature was 40.8 °F (4.9 °C) in 1990. The low temperature is usually^* between 26.5 °F (-3.0 °C) and 41.0 °F (5.0 °C). About a quarter of the time, the low temperature is less than 26.5 °F (-3.0 °C), and another quarter of the time, the low temperature is greater than and 41.0 °F (5.0 °C). About 95% of the time, the low temperature has been between 12.7 °F (-10.7 °C) and 54.9 °F (12.7 °C).

Frost

On November 18 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 43.4% 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 1987 to 1990

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