Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On May 29 in NORTHERLY ISLAND the average high temperature is 72.9 °F (22.7 °C). The lowest recored high temperature was 60.6 °F (15.9 °C) in 2014 and the highest recored high temperature was 81.5 °F (27.5 °C) in 2022. The high temperature is usually* between 67.9 °F (19.9 °C) and 77.9 °F (25.5 °C). About a quarter of the time, the high temperature is less than 67.9 °F (19.9 °C), and another quarter of the time, the high temperature is greater than and 77.9 °F (25.5 °C). About 95% of the time, the high temperature has been between 58.3 °F (14.6 °C) and 87.5 °F (30.8 °C).
Low Temperatures
On May 29 in NORTHERLY ISLAND the average low temperature is 55.4 °F (13.0 °C). The lowest recored low temperature was 46.9 °F (8.3 °C) in 2019 and the lowest recored low temperature was 64.2 °F (17.9 °C) in 2013. The low temperature is usually* between 51.4 °F (10.8 °C) and 59.4 °F (15.2 °C). About a quarter of the time, the low temperature is less than 51.4 °F (10.8 °C), and another quarter of the time, the low temperature is greater than and 59.4 °F (15.2 °C). About 95% of the time, the low temperature has been between 43.9 °F (6.6 °C) and 66.9 °F (19.4 °C).
Frost
On May 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 2013 to 2025