- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On December 19 in WILMETTE (CGS) the average high temperature is 35.2 °F (1.8 °C). The lowest recored high temperature was 13.1 °F (-10.5 °C) in 1989 and the highest recored high temperature was 52.0 °F (11.1 °C) in 1988. The high temperature is usually* between 26.3 °F (-3.1 °C) and 44.1 °F (6.7 °C). About a quarter of the time, the high temperature is less than 26.3 °F (-3.1 °C), and another quarter of the time, the high temperature is greater than and 44.1 °F (6.7 °C). About 95% of the time, the high temperature has been between 9.4 °F (-12.5 °C) and 61.0 °F (16.1 °C).
Low Temperatures
On December 19 in WILMETTE (CGS) the average low temperature is 23.5 °F (-4.7 °C). The lowest recored low temperature was 9.1 °F (-12.7 °C) in 1989 and the lowest recored low temperature was 30.0 °F (-1.1 °C) in 1988. The low temperature is usually* between 14.2 °F (-9.9 °C) and 32.8 °F (0.5 °C). About a quarter of the time, the low temperature is less than 14.2 °F (-9.9 °C), and another quarter of the time, the low temperature is greater than and 32.8 °F (0.5 °C). About 95% of the time, the low temperature has been between -3.5 °F (-19.7 °C) and 50.5 °F (10.3 °C).
Frost
On December 19 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 73.1% 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