Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On February 9 in NORTHERLY ISLAND the average high temperature is 34.7 °F (1.5 °C). The lowest recored high temperature was 18.0 °F (-7.8 °C) in 2021 and the highest recored high temperature was 57.9 °F (14.4 °C) in 2024. The high temperature is usually* between 26.6 °F (-3.0 °C) and 42.8 °F (6.0 °C). About a quarter of the time, the high temperature is less than 26.6 °F (-3.0 °C), and another quarter of the time, the high temperature is greater than and 42.8 °F (6.0 °C). About 95% of the time, the high temperature has been between 11.2 °F (-11.5 °C) and 58.1 °F (14.5 °C).
Low Temperatures
On February 9 in NORTHERLY ISLAND the average low temperature is 20.2 °F (-6.5 °C). The lowest recored low temperature was 3.0 °F (-16.1 °C) in 2021 and the lowest recored low temperature was 43.5 °F (6.4 °C) in 2024. The low temperature is usually* between 13.0 °F (-10.5 °C) and 27.5 °F (-2.5 °C). About a quarter of the time, the low temperature is less than 13.0 °F (-10.5 °C), and another quarter of the time, the low temperature is greater than and 27.5 °F (-2.5 °C). About 95% of the time, the low temperature has been between -0.7 °F (-18.2 °C) and 41.2 °F (5.1 °C).
Frost
On February 9 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 86.4% 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