- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On January 17 in NORTHERLY ISLAND the average high temperature is 34.5 °F (1.4 °C). The lowest recored high temperature was 18.5 °F (-7.5 °C) in 2024 and the highest recored high temperature was 52.0 °F (11.1 °C) in 2023. The high temperature is usually* between 28.0 °F (-2.2 °C) and 41.0 °F (5.0 °C). About a quarter of the time, the high temperature is less than 28.0 °F (-2.2 °C), and another quarter of the time, the high temperature is greater than and 41.0 °F (5.0 °C). About 95% of the time, the high temperature has been between 15.7 °F (-9.1 °C) and 53.3 °F (11.9 °C).
Low Temperatures
On January 17 in NORTHERLY ISLAND the average low temperature is 19.3 °F (-7.0 °C). The lowest recored low temperature was -5.1 °F (-20.6 °C) in 2024 and the lowest recored low temperature was 36.0 °F (2.2 °C) in 2023. The low temperature is usually* between 11.7 °F (-11.3 °C) and 26.9 °F (-2.8 °C). About a quarter of the time, the low temperature is less than 11.7 °F (-11.3 °C), and another quarter of the time, the low temperature is greater than and 26.9 °F (-2.8 °C). About 95% of the time, the low temperature has been between -2.8 °F (-19.3 °C) and 41.4 °F (5.2 °C).
Frost
On January 17 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 87.0% 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:
- NORTHERLY ISLAND — Integrated Surface Dataset (ISD) station ID: 998499 — from year 2013 to 2025