Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On July 26 in NORTHERLY ISLAND the average high temperature is 82.8 °F (28.2 °C). The lowest recored high temperature was 73.8 °F (23.2 °C) in 2022 and the highest recored high temperature was 95.2 °F (35.1 °C) in 2012. The high temperature is usually* between 78.0 °F (25.6 °C) and 87.6 °F (30.9 °C). About a quarter of the time, the high temperature is less than 78.0 °F (25.6 °C), and another quarter of the time, the high temperature is greater than and 87.6 °F (30.9 °C). About 95% of the time, the high temperature has been between 68.9 °F (20.5 °C) and 96.7 °F (35.9 °C).
Low Temperatures
On July 26 in NORTHERLY ISLAND the average low temperature is 69.3 °F (20.7 °C). The lowest recored low temperature was 66.0 °F (18.9 °C) in 2019 and the lowest recored low temperature was 75.0 °F (23.9 °C) in 2012. The low temperature is usually* between 67.1 °F (19.5 °C) and 71.6 °F (22.0 °C). About a quarter of the time, the low temperature is less than 67.1 °F (19.5 °C), and another quarter of the time, the low temperature is greater than and 71.6 °F (22.0 °C). About 95% of the time, the low temperature has been between 62.7 °F (17.1 °C) and 75.9 °F (24.4 °C).
Frost
On July 26 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 2012 to 2025