- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On May 9 in WILMETTE (CGS) the average high temperature is 64.7 °F (18.1 °C). The lowest recored high temperature was 45.9 °F (7.7 °C) in 1989 and the highest recored high temperature was 77.9 °F (25.5 °C) in 1990. The high temperature is usually* between 55.4 °F (13.0 °C) and 73.9 °F (23.3 °C). About a quarter of the time, the high temperature is less than 55.4 °F (13.0 °C), and another quarter of the time, the high temperature is greater than and 73.9 °F (23.3 °C). About 95% of the time, the high temperature has been between 37.9 °F (3.3 °C) and 91.4 °F (33.0 °C).
Low Temperatures
On May 9 in WILMETTE (CGS) the average low temperature is 49.8 °F (9.9 °C). The lowest recored low temperature was 41.9 °F (5.5 °C) in 1989 and the lowest recored low temperature was 59.9 °F (15.5 °C) in 1990. The low temperature is usually* between 43.4 °F (6.3 °C) and 56.2 °F (13.5 °C). About a quarter of the time, the low temperature is less than 43.4 °F (6.3 °C), and another quarter of the time, the low temperature is greater than and 56.2 °F (13.5 °C). About 95% of the time, the low temperature has been between 31.2 °F (-0.5 °C) and 68.5 °F (20.3 °C).
Frost
On May 9 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 3.0% 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 (CGS) — Integrated Surface Dataset (ISD) station ID: 722417 — from year 1988 to 1990