Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On July 5 in NORTHERLY ISLAND the average high temperature is 83.2 °F (28.4 °C). The lowest recored high temperature was 75.6 °F (24.2 °C) in 2015 and the highest recored high temperature was 90.9 °F (32.7 °C) in 2025. The high temperature is usually* between 79.1 °F (26.1 °C) and 87.3 °F (30.7 °C). About a quarter of the time, the high temperature is less than 79.1 °F (26.1 °C), and another quarter of the time, the high temperature is greater than and 87.3 °F (30.7 °C). About 95% of the time, the high temperature has been between 71.3 °F (21.8 °C) and 95.1 °F (35.1 °C).
Low Temperatures
On July 5 in NORTHERLY ISLAND the average low temperature is 67.3 °F (19.6 °C). The lowest recored low temperature was 61.2 °F (16.2 °C) in 2014 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 2021. The low temperature is usually* between 64.8 °F (18.2 °C) and 69.8 °F (21.0 °C). About a quarter of the time, the low temperature is less than 64.8 °F (18.2 °C), and another quarter of the time, the low temperature is greater than and 69.8 °F (21.0 °C). About 95% of the time, the low temperature has been between 60.0 °F (15.6 °C) and 74.6 °F (23.7 °C).
Frost
On July 5 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