- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On June 29 in NORTHERLY ISLAND the average high temperature is 81.6 °F (27.6 °C). The lowest recored high temperature was 69.8 °F (21.0 °C) in 2013 and the highest recored high temperature was 87.3 °F (30.7 °C) in 2024. The high temperature is usually* between 77.0 °F (25.0 °C) and 86.2 °F (30.1 °C). About a quarter of the time, the high temperature is less than 77.0 °F (25.0 °C), and another quarter of the time, the high temperature is greater than and 86.2 °F (30.1 °C). About 95% of the time, the high temperature has been between 68.3 °F (20.2 °C) and 94.9 °F (34.9 °C).
Low Temperatures
On June 29 in NORTHERLY ISLAND the average low temperature is 65.4 °F (18.6 °C). The lowest recored low temperature was 60.1 °F (15.6 °C) in 2015 and the lowest recored low temperature was 71.6 °F (22.0 °C) in 2012. The low temperature is usually* between 62.5 °F (17.0 °C) and 68.3 °F (20.2 °C). About a quarter of the time, the low temperature is less than 62.5 °F (17.0 °C), and another quarter of the time, the low temperature is greater than and 68.3 °F (20.2 °C). About 95% of the time, the low temperature has been between 57.0 °F (13.9 °C) and 73.8 °F (23.2 °C).
Frost
On June 29 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