- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On August 14 in NORTHERLY ISLAND the average high temperature is 78.9 °F (26.0 °C). The lowest recored high temperature was 67.3 °F (19.6 °C) in 2013 and the highest recored high temperature was 88.0 °F (31.1 °C) in 2015. The high temperature is usually* between 75.6 °F (24.2 °C) and 82.1 °F (27.9 °C). About a quarter of the time, the high temperature is less than 75.6 °F (24.2 °C), and another quarter of the time, the high temperature is greater than and 82.1 °F (27.9 °C). About 95% of the time, the high temperature has been between 69.3 °F (20.7 °C) and 88.4 °F (31.3 °C).
Low Temperatures
On August 14 in NORTHERLY ISLAND the average low temperature is 67.2 °F (19.6 °C). The lowest recored low temperature was 62.8 °F (17.1 °C) in 2013 and the lowest recored low temperature was 71.8 °F (22.1 °C) in 2016. The low temperature is usually* between 64.9 °F (18.3 °C) and 69.6 °F (20.9 °C). About a quarter of the time, the low temperature is less than 64.9 °F (18.3 °C), and another quarter of the time, the low temperature is greater than and 69.6 °F (20.9 °C). About 95% of the time, the low temperature has been between 60.4 °F (15.8 °C) and 74.1 °F (23.4 °C).
Frost
On August 14 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