Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On February 26 in NORTHERLY ISLAND the average high temperature is 40.9 °F (4.9 °C). The lowest recored high temperature was 16.3 °F (-8.7 °C) in 2014 and the highest recored high temperature was 69.6 °F (20.9 °C) in 2024. The high temperature is usually* between 31.9 °F (-0.0 °C) and 49.8 °F (9.9 °C). About a quarter of the time, the high temperature is less than 31.9 °F (-0.0 °C), and another quarter of the time, the high temperature is greater than and 49.8 °F (9.9 °C). About 95% of the time, the high temperature has been between 14.9 °F (-9.5 °C) and 66.9 °F (19.4 °C).
Low Temperatures
On February 26 in NORTHERLY ISLAND the average low temperature is 25.5 °F (-3.6 °C). The lowest recored low temperature was 2.7 °F (-16.3 °C) in 2014 and the lowest recored low temperature was 34.0 °F (1.1 °C) in 2018. The low temperature is usually* between 19.4 °F (-7.0 °C) and 31.7 °F (-0.2 °C). About a quarter of the time, the low temperature is less than 19.4 °F (-7.0 °C), and another quarter of the time, the low temperature is greater than and 31.7 °F (-0.2 °C). About 95% of the time, the low temperature has been between 7.8 °F (-13.5 °C) and 43.3 °F (6.3 °C).
Frost
On February 26 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 76.2% 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