- Country: US
- State: IL
- Latitude: 42.067
- Longitude: -87.683
High Temperatures
On April 30 in WILMETTE (CGS) the average high temperature is 54.5 °F (12.5 °C). The lowest recored high temperature was 49.8 °F (9.9 °C) in 1988 and the highest recored high temperature was 59.9 °F (15.5 °C) in 1990. The high temperature is usually* between 50.8 °F (10.5 °C) and 58.1 °F (14.5 °C). About a quarter of the time, the high temperature is less than 50.8 °F (10.5 °C), and another quarter of the time, the high temperature is greater than and 58.1 °F (14.5 °C). About 95% of the time, the high temperature has been between 43.9 °F (6.6 °C) and 65.1 °F (18.4 °C).
Low Temperatures
On April 30 in WILMETTE (CGS) the average low temperature is 43.4 °F (6.4 °C). The lowest recored low temperature was 39.9 °F (4.4 °C) in 1988 and the lowest recored low temperature was 49.8 °F (9.9 °C) in 1990. The low temperature is usually* between 41.0 °F (5.0 °C) and 45.9 °F (7.7 °C). About a quarter of the time, the low temperature is less than 41.0 °F (5.0 °C), and another quarter of the time, the low temperature is greater than and 45.9 °F (7.7 °C). About 95% of the time, the low temperature has been between 36.3 °F (2.4 °C) and 50.6 °F (10.3 °C).
Frost
On April 30 in WILMETTE (CGS) expect the temperatures to drop below freezing for a risk of frost about 0.1% 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 1988 to 1990