Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On April 2 in NORTHERLY ISLAND the average high temperature is 51.9 °F (11.1 °C). The lowest recored high temperature was 37.0 °F (2.8 °C) in 2018 and the highest recored high temperature was 71.1 °F (21.7 °C) in 2015. The high temperature is usually* between 44.9 °F (7.1 °C) and 59.0 °F (15.0 °C). About a quarter of the time, the high temperature is less than 44.9 °F (7.1 °C), and another quarter of the time, the high temperature is greater than and 59.0 °F (15.0 °C). About 95% of the time, the high temperature has been between 31.4 °F (-0.4 °C) and 72.5 °F (22.5 °C).
Low Temperatures
On April 2 in NORTHERLY ISLAND the average low temperature is 34.2 °F (1.2 °C). The lowest recored low temperature was 27.0 °F (-2.8 °C) in 2018 and the lowest recored low temperature was 42.1 °F (5.6 °C) in 2024. The low temperature is usually* between 31.3 °F (-0.4 °C) and 37.1 °F (2.9 °C). About a quarter of the time, the low temperature is less than 31.3 °F (-0.4 °C), and another quarter of the time, the low temperature is greater than and 37.1 °F (2.9 °C). About 95% of the time, the low temperature has been between 25.6 °F (-3.5 °C) and 42.8 °F (6.0 °C).
Frost
On April 2 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 30.7% 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