Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On September 19 in NORTHERLY ISLAND the average high temperature is 76.7 °F (24.8 °C). The lowest recored high temperature was 62.1 °F (16.7 °C) in 2020 and the highest recored high temperature was 87.4 °F (30.8 °C) in 2016. The high temperature is usually* between 71.8 °F (22.1 °C) and 81.5 °F (27.5 °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 81.5 °F (27.5 °C). About 95% of the time, the high temperature has been between 62.6 °F (17.0 °C) and 90.8 °F (32.7 °C).
Low Temperatures
On September 19 in NORTHERLY ISLAND the average low temperature is 61.5 °F (16.4 °C). The lowest recored low temperature was 48.6 °F (9.2 °C) in 2020 and the lowest recored low temperature was 68.7 °F (20.4 °C) in 2022. The low temperature is usually* between 57.6 °F (14.2 °C) and 65.3 °F (18.5 °C). About a quarter of the time, the low temperature is less than 57.6 °F (14.2 °C), and another quarter of the time, the low temperature is greater than and 65.3 °F (18.5 °C). About 95% of the time, the low temperature has been between 50.3 °F (10.2 °C) and 72.6 °F (22.6 °C).
Frost
On September 19 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