Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On October 1 in NORTHERLY ISLAND the average high temperature is 70.1 °F (21.2 °C). The lowest recored high temperature was 59.7 °F (15.4 °C) in 2015 and the highest recored high temperature was 86.2 °F (30.1 °C) in 2019. The high temperature is usually* between 64.9 °F (18.3 °C) and 75.3 °F (24.0 °C). About a quarter of the time, the high temperature is less than 64.9 °F (18.3 °C), and another quarter of the time, the high temperature is greater than and 75.3 °F (24.0 °C). About 95% of the time, the high temperature has been between 55.0 °F (12.8 °C) and 85.2 °F (29.6 °C).
Low Temperatures
On October 1 in NORTHERLY ISLAND the average low temperature is 57.2 °F (14.0 °C). The lowest recored low temperature was 50.0 °F (10.0 °C) in 2022 and the lowest recored low temperature was 62.8 °F (17.1 °C) in 2024. The low temperature is usually* between 53.8 °F (12.1 °C) and 60.6 °F (15.9 °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 60.6 °F (15.9 °C). About 95% of the time, the low temperature has been between 47.3 °F (8.5 °C) and 67.1 °F (19.5 °C).
Frost
On October 1 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 2024