- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On September 23 in NORTHERLY ISLAND the average high temperature is 72.3 °F (22.4 °C). The lowest recored high temperature was 58.3 °F (14.6 °C) in 2012 and the highest recored high temperature was 84.0 °F (28.9 °C) in 2016. The high temperature is usually* between 67.4 °F (19.7 °C) and 77.2 °F (25.1 °C). About a quarter of the time, the high temperature is less than 67.4 °F (19.7 °C), and another quarter of the time, the high temperature is greater than and 77.2 °F (25.1 °C). About 95% of the time, the high temperature has been between 58.1 °F (14.5 °C) and 86.6 °F (30.3 °C).
Low Temperatures
On September 23 in NORTHERLY ISLAND the average low temperature is 57.9 °F (14.4 °C). The lowest recored low temperature was 46.9 °F (8.3 °C) in 2012 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 2016. The low temperature is usually* between 53.8 °F (12.1 °C) and 61.9 °F (16.6 °C). About a quarter of the time, the low temperature is less than 53.8 °F (12.1 °C), and another quarter of the time, the low temperature is greater than and 61.9 °F (16.6 °C). About 95% of the time, the low temperature has been between 46.1 °F (7.8 °C) and 69.7 °F (20.9 °C).
Frost
On September 23 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