Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On February 4 in NORTHERLY ISLAND the average high temperature is 35.9 °F (2.2 °C). The lowest recored high temperature was 24.4 °F (-4.2 °C) in 2014 and the highest recored high temperature was 50.9 °F (10.5 °C) in 2019. The high temperature is usually* between 30.4 °F (-0.9 °C) and 41.3 °F (5.2 °C). About a quarter of the time, the high temperature is less than 30.4 °F (-0.9 °C), and another quarter of the time, the high temperature is greater than and 41.3 °F (5.2 °C). About 95% of the time, the high temperature has been between 20.1 °F (-6.6 °C) and 51.6 °F (10.9 °C).
Low Temperatures
On February 4 in NORTHERLY ISLAND the average low temperature is 20.0 °F (-6.7 °C). The lowest recored low temperature was 3.9 °F (-15.6 °C) in 2023 and the lowest recored low temperature was 39.9 °F (4.4 °C) in 2019. The low temperature is usually* between 13.3 °F (-10.4 °C) and 26.7 °F (-2.9 °C). About a quarter of the time, the low temperature is less than 13.3 °F (-10.4 °C), and another quarter of the time, the low temperature is greater than and 26.7 °F (-2.9 °C). About 95% of the time, the low temperature has been between 0.6 °F (-17.5 °C) and 39.4 °F (4.1 °C).
Frost
On February 4 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 88.7% 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