Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On August 25 in NORTHERLY ISLAND the average high temperature is 82.9 °F (28.3 °C). The lowest recored high temperature was 73.0 °F (22.8 °C) in 2015 and the highest recored high temperature was 93.9 °F (34.4 °C) in 2021. The high temperature is usually* between 78.0 °F (25.6 °C) and 87.8 °F (31.0 °C). About a quarter of the time, the high temperature is less than 78.0 °F (25.6 °C), and another quarter of the time, the high temperature is greater than and 87.8 °F (31.0 °C). About 95% of the time, the high temperature has been between 68.6 °F (20.3 °C) and 97.2 °F (36.2 °C).
Low Temperatures
On August 25 in NORTHERLY ISLAND the average low temperature is 68.2 °F (20.1 °C). The lowest recored low temperature was 57.9 °F (14.4 °C) in 2015 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 2020. The low temperature is usually* between 65.1 °F (18.4 °C) and 71.4 °F (21.9 °C). About a quarter of the time, the low temperature is less than 65.1 °F (18.4 °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 59.0 °F (15.0 °C) and 77.4 °F (25.2 °C).
Frost
On August 25 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