Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On July 2 in NORTHERLY ISLAND the average high temperature is 77.5 °F (25.3 °C). The lowest recored high temperature was 63.0 °F (17.2 °C) in 2015 and the highest recored high temperature was 91.0 °F (32.8 °C) in 2019. The high temperature is usually* between 72.1 °F (22.3 °C) and 82.8 °F (28.2 °C). About a quarter of the time, the high temperature is less than 72.1 °F (22.3 °C), and another quarter of the time, the high temperature is greater than and 82.8 °F (28.2 °C). About 95% of the time, the high temperature has been between 61.9 °F (16.6 °C) and 93.1 °F (33.9 °C).
Low Temperatures
On July 2 in NORTHERLY ISLAND the average low temperature is 63.6 °F (17.5 °C). The lowest recored low temperature was 54.7 °F (12.6 °C) in 2015 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 2025. The low temperature is usually* between 60.1 °F (15.6 °C) and 67.0 °F (19.5 °C). About a quarter of the time, the low temperature is less than 60.1 °F (15.6 °C), and another quarter of the time, the low temperature is greater than and 67.0 °F (19.5 °C). About 95% of the time, the low temperature has been between 53.6 °F (12.0 °C) and 73.6 °F (23.1 °C).
Frost
On July 2 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