- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On March 28 in NORTHERLY ISLAND the average high temperature is 51.0 °F (10.6 °C). The lowest recored high temperature was 30.9 °F (-0.6 °C) in 2015 and the highest recored high temperature was 77.2 °F (25.1 °C) in 2025. The high temperature is usually* between 43.1 °F (6.2 °C) and 58.9 °F (15.0 °C). About a quarter of the time, the high temperature is less than 43.1 °F (6.2 °C), and another quarter of the time, the high temperature is greater than and 58.9 °F (15.0 °C). About 95% of the time, the high temperature has been between 28.1 °F (-2.2 °C) and 74.0 °F (23.3 °C).
Low Temperatures
On March 28 in NORTHERLY ISLAND the average low temperature is 34.1 °F (1.2 °C). The lowest recored low temperature was 24.1 °F (-4.4 °C) in 2015 and the lowest recored low temperature was 43.0 °F (6.1 °C) in 2025. The low temperature is usually* between 30.5 °F (-0.8 °C) and 37.7 °F (3.1 °C). About a quarter of the time, the low temperature is less than 30.5 °F (-0.8 °C), and another quarter of the time, the low temperature is greater than and 37.7 °F (3.1 °C). About 95% of the time, the low temperature has been between 23.8 °F (-4.6 °C) and 44.4 °F (6.9 °C).
Frost
On March 28 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 34.5% 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