Station information
- Integrated Surface Dataset (ISD) station ID: 722417
- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On March 18 in WILMETTE (CGS) the average high temperature is 40.0 °F (4.5 °C). The lowest recored high temperature was 29.1 °F (-1.6 °C) in 1989 and the highest recored high temperature was 43.0 °F (6.1 °C) in 1990. The high temperature is usually* between 33.9 °F (1.0 °C) and 46.2 °F (7.9 °C). About a quarter of the time, the high temperature is less than 33.9 °F (1.0 °C), and another quarter of the time, the high temperature is greater than and 46.2 °F (7.9 °C). About 95% of the time, the high temperature has been between 22.2 °F (-5.5 °C) and 57.9 °F (14.4 °C).
Low Temperatures
On March 18 in WILMETTE (CGS) the average low temperature is 27.7 °F (-2.4 °C). The lowest recored low temperature was 20.1 °F (-6.6 °C) in 1989 and the lowest recored low temperature was 31.1 °F (-0.5 °C) in 1990. The low temperature is usually* between 23.0 °F (-5.0 °C) and 32.4 °F (0.2 °C). About a quarter of the time, the low temperature is less than 23.0 °F (-5.0 °C), and another quarter of the time, the low temperature is greater than and 32.4 °F (0.2 °C). About 95% of the time, the low temperature has been between 14.1 °F (-10.0 °C) and 41.3 °F (5.1 °C).
Frost
On March 18 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 73.4% 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 1988 to 1990