Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On May 25 in NORTHERLY ISLAND the average high temperature is 71.3 °F (21.8 °C). The lowest recored high temperature was 50.7 °F (10.4 °C) in 2013 and the highest recored high temperature was 87.1 °F (30.6 °C) in 2016. The high temperature is usually* between 63.6 °F (17.6 °C) and 79.0 °F (26.1 °C). About a quarter of the time, the high temperature is less than 63.6 °F (17.6 °C), and another quarter of the time, the high temperature is greater than and 79.0 °F (26.1 °C). About 95% of the time, the high temperature has been between 49.0 °F (9.4 °C) and 93.6 °F (34.2 °C).
Low Temperatures
On May 25 in NORTHERLY ISLAND the average low temperature is 54.0 °F (12.2 °C). The lowest recored low temperature was 45.0 °F (7.2 °C) in 2013 and the lowest recored low temperature was 64.0 °F (17.8 °C) in 2016. The low temperature is usually* between 50.1 °F (10.1 °C) and 57.8 °F (14.3 °C). About a quarter of the time, the low temperature is less than 50.1 °F (10.1 °C), and another quarter of the time, the low temperature is greater than and 57.8 °F (14.3 °C). About 95% of the time, the low temperature has been between 42.8 °F (6.0 °C) and 65.1 °F (18.4 °C).
Frost
On May 25 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