Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On August 6 in NORTHERLY ISLAND the average high temperature is 81.9 °F (27.7 °C). The lowest recored high temperature was 71.8 °F (22.1 °C) in 2014 and the highest recored high temperature was 90.0 °F (32.2 °C) in 2019. The high temperature is usually* between 77.7 °F (25.4 °C) and 86.1 °F (30.1 °C). About a quarter of the time, the high temperature is less than 77.7 °F (25.4 °C), and another quarter of the time, the high temperature is greater than and 86.1 °F (30.1 °C). About 95% of the time, the high temperature has been between 69.6 °F (20.9 °C) and 94.2 °F (34.5 °C).
Low Temperatures
On August 6 in NORTHERLY ISLAND the average low temperature is 68.8 °F (20.5 °C). The lowest recored low temperature was 61.0 °F (16.1 °C) in 2020 and the lowest recored low temperature was 71.4 °F (21.9 °C) in 2016. The low temperature is usually* between 66.3 °F (19.0 °C) and 71.4 °F (21.9 °C). About a quarter of the time, the low temperature is less than 66.3 °F (19.0 °C), and another quarter of the time, the low temperature is greater than and 71.4 °F (21.9 °C). About 95% of the time, the low temperature has been between 61.5 °F (16.4 °C) and 76.2 °F (24.5 °C).
Frost
On August 6 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