- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On September 16 in NORTHERLY ISLAND the average high temperature is 76.6 °F (24.8 °C). The lowest recored high temperature was 61.7 °F (16.5 °C) in 2014 and the highest recored high temperature was 82.2 °F (27.9 °C) in 2020. The high temperature is usually* between 71.8 °F (22.1 °C) and 81.3 °F (27.4 °C). About a quarter of the time, the high temperature is less than 71.8 °F (22.1 °C), and another quarter of the time, the high temperature is greater than and 81.3 °F (27.4 °C). About 95% of the time, the high temperature has been between 62.8 °F (17.1 °C) and 90.3 °F (32.4 °C).
Low Temperatures
On September 16 in NORTHERLY ISLAND the average low temperature is 61.2 °F (16.2 °C). The lowest recored low temperature was 50.5 °F (10.3 °C) in 2014 and the lowest recored low temperature was 66.6 °F (19.2 °C) in 2024. The low temperature is usually* between 58.4 °F (14.7 °C) and 64.1 °F (17.8 °C). About a quarter of the time, the low temperature is less than 58.4 °F (14.7 °C), and another quarter of the time, the low temperature is greater than and 64.1 °F (17.8 °C). About 95% of the time, the low temperature has been between 52.9 °F (11.6 °C) and 69.6 °F (20.9 °C).
Frost
On September 16 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