Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On July 4 in NORTHERLY ISLAND the average high temperature is 80.3 °F (26.9 °C). The lowest recored high temperature was 68.0 °F (20.0 °C) in 2014 and the highest recored high temperature was 88.0 °F (31.1 °C) in 2019. The high temperature is usually* between 75.4 °F (24.1 °C) and 85.3 °F (29.6 °C). About a quarter of the time, the high temperature is less than 75.4 °F (24.1 °C), and another quarter of the time, the high temperature is greater than and 85.3 °F (29.6 °C). About 95% of the time, the high temperature has been between 65.9 °F (18.8 °C) and 94.8 °F (34.9 °C).
Low Temperatures
On July 4 in NORTHERLY ISLAND the average low temperature is 65.5 °F (18.6 °C). The lowest recored low temperature was 60.1 °F (15.6 °C) in 2015 and the lowest recored low temperature was 71.8 °F (22.1 °C) in 2024. The low temperature is usually* between 62.2 °F (16.8 °C) and 68.8 °F (20.4 °C). About a quarter of the time, the low temperature is less than 62.2 °F (16.8 °C), and another quarter of the time, the low temperature is greater than and 68.8 °F (20.4 °C). About 95% of the time, the low temperature has been between 55.9 °F (13.3 °C) and 75.1 °F (23.9 °C).
Frost
On July 4 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 0.0% 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