- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On October 18 in NORTHERLY ISLAND the average high temperature is 62.8 °F (17.1 °C). The lowest recored high temperature was 45.3 °F (7.4 °C) in 2022 and the highest recored high temperature was 82.9 °F (28.3 °C) in 2016. The high temperature is usually* between 56.6 °F (13.7 °C) and 69.1 °F (20.6 °C). About a quarter of the time, the high temperature is less than 56.6 °F (13.7 °C), and another quarter of the time, the high temperature is greater than and 69.1 °F (20.6 °C). About 95% of the time, the high temperature has been between 44.8 °F (7.1 °C) and 80.9 °F (27.2 °C).
Low Temperatures
On October 18 in NORTHERLY ISLAND the average low temperature is 45.6 °F (7.6 °C). The lowest recored low temperature was 36.3 °F (2.4 °C) in 2022 and the lowest recored low temperature was 61.9 °F (16.6 °C) in 2016. The low temperature is usually* between 41.1 °F (5.0 °C) and 50.2 °F (10.1 °C). About a quarter of the time, the low temperature is less than 41.1 °F (5.0 °C), and another quarter of the time, the low temperature is greater than and 50.2 °F (10.1 °C). About 95% of the time, the low temperature has been between 32.4 °F (0.2 °C) and 58.8 °F (14.9 °C).
Frost
On October 18 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 2.2% 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:
- NORTHERLY ISLAND — Integrated Surface Dataset (ISD) station ID: 998499 — from year 2012 to 2024