Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On January 18 in NORTHERLY ISLAND the average high temperature is 35.5 °F (1.9 °C). The lowest recored high temperature was 14.0 °F (-10.0 °C) in 2016 and the highest recored high temperature was 51.1 °F (10.6 °C) in 2023. The high temperature is usually* between 29.3 °F (-1.5 °C) and 41.6 °F (5.3 °C). About a quarter of the time, the high temperature is less than 29.3 °F (-1.5 °C), and another quarter of the time, the high temperature is greater than and 41.6 °F (5.3 °C). About 95% of the time, the high temperature has been between 17.7 °F (-8.0 °C) and 53.2 °F (11.8 °C).
Low Temperatures
On January 18 in NORTHERLY ISLAND the average low temperature is 19.6 °F (-6.9 °C). The lowest recored low temperature was -2.2 °F (-19.0 °C) in 2016 and the lowest recored low temperature was 35.2 °F (1.8 °C) in 2023. The low temperature is usually* between 11.6 °F (-11.4 °C) and 27.7 °F (-2.4 °C). About a quarter of the time, the low temperature is less than 11.6 °F (-11.4 °C), and another quarter of the time, the low temperature is greater than and 27.7 °F (-2.4 °C). About 95% of the time, the low temperature has been between -3.8 °F (-19.9 °C) and 43.1 °F (6.1 °C).
Frost
On January 18 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 84.9% 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 2013 to 2025