Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On September 4 in NORTHERLY ISLAND the average high temperature is 80.4 °F (26.9 °C). The lowest recored high temperature was 75.0 °F (23.9 °C) in 2016 and the highest recored high temperature was 90.0 °F (32.2 °C) in 2015. The high temperature is usually* between 76.4 °F (24.7 °C) and 84.3 °F (29.1 °C). About a quarter of the time, the high temperature is less than 76.4 °F (24.7 °C), and another quarter of the time, the high temperature is greater than and 84.3 °F (29.1 °C). About 95% of the time, the high temperature has been between 68.9 °F (20.5 °C) and 91.9 °F (33.3 °C).
Low Temperatures
On September 4 in NORTHERLY ISLAND the average low temperature is 65.7 °F (18.7 °C). The lowest recored low temperature was 60.1 °F (15.6 °C) in 2024 and the lowest recored low temperature was 71.4 °F (21.9 °C) in 2012. The low temperature is usually* between 62.9 °F (17.2 °C) and 68.6 °F (20.3 °C). About a quarter of the time, the low temperature is less than 62.9 °F (17.2 °C), and another quarter of the time, the low temperature is greater than and 68.6 °F (20.3 °C). About 95% of the time, the low temperature has been between 57.5 °F (14.2 °C) and 74.0 °F (23.3 °C).
Frost
On September 4 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