- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On August 26 in NORTHERLY ISLAND the average high temperature is 82.9 °F (28.3 °C). The lowest recored high temperature was 66.9 °F (19.4 °C) in 2015 and the highest recored high temperature was 93.0 °F (33.9 °C) in 2024. The high temperature is usually* between 77.5 °F (25.3 °C) and 88.4 °F (31.3 °C). About a quarter of the time, the high temperature is less than 77.5 °F (25.3 °C), and another quarter of the time, the high temperature is greater than and 88.4 °F (31.3 °C). About 95% of the time, the high temperature has been between 67.2 °F (19.6 °C) and 98.7 °F (37.0 °C).
Low Temperatures
On August 26 in NORTHERLY ISLAND the average low temperature is 69.1 °F (20.6 °C). The lowest recored low temperature was 59.0 °F (15.0 °C) in 2015 and the lowest recored low temperature was 75.0 °F (23.9 °C) in 2024. The low temperature is usually* between 65.5 °F (18.6 °C) and 72.6 °F (22.6 °C). About a quarter of the time, the low temperature is less than 65.5 °F (18.6 °C), and another quarter of the time, the low temperature is greater than and 72.6 °F (22.6 °C). About 95% of the time, the low temperature has been between 58.8 °F (14.9 °C) and 79.4 °F (26.3 °C).
Frost
On August 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 2024