Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On January 15 in NORTHERLY ISLAND the average high temperature is 32.0 °F (-0.0 °C). The lowest recored high temperature was 3.9 °F (-15.6 °C) in 2024 and the highest recored high temperature was 46.0 °F (7.8 °C) in 2016. The high temperature is usually* between 25.0 °F (-3.9 °C) and 38.9 °F (3.8 °C). About a quarter of the time, the high temperature is less than 25.0 °F (-3.9 °C), and another quarter of the time, the high temperature is greater than and 38.9 °F (3.8 °C). About 95% of the time, the high temperature has been between 11.8 °F (-11.2 °C) and 52.1 °F (11.2 °C).
Low Temperatures
On January 15 in NORTHERLY ISLAND the average low temperature is 18.4 °F (-7.6 °C). The lowest recored low temperature was -9.0 °F (-22.8 °C) in 2024 and the lowest recored low temperature was 33.1 °F (0.6 °C) in 2021. The low temperature is usually* between 10.7 °F (-11.9 °C) and 26.0 °F (-3.3 °C). About a quarter of the time, the low temperature is less than 10.7 °F (-11.9 °C), and another quarter of the time, the low temperature is greater than and 26.0 °F (-3.3 °C). About 95% of the time, the low temperature has been between -4.0 °F (-20.0 °C) and 40.7 °F (4.8 °C).
Frost
On January 15 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 88.4% 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:
- NORTHERLY ISLAND — Integrated Surface Dataset (ISD) station ID: 998499 — from year 2013 to 2025