Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On April 22 in NORTHERLY ISLAND the average high temperature is 60.3 °F (15.7 °C). The lowest recored high temperature was 50.0 °F (10.0 °C) in 2020 and the highest recored high temperature was 77.7 °F (25.4 °C) in 2019. The high temperature is usually* between 53.1 °F (11.7 °C) and 67.6 °F (19.8 °C). About a quarter of the time, the high temperature is less than 53.1 °F (11.7 °C), and another quarter of the time, the high temperature is greater than and 67.6 °F (19.8 °C). About 95% of the time, the high temperature has been between 39.3 °F (4.1 °C) and 81.4 °F (27.4 °C).
Low Temperatures
On April 22 in NORTHERLY ISLAND the average low temperature is 41.8 °F (5.5 °C). The lowest recored low temperature was 35.8 °F (2.1 °C) in 2015 and the lowest recored low temperature was 46.9 °F (8.3 °C) in 2025. The low temperature is usually* between 38.5 °F (3.6 °C) and 45.1 °F (7.3 °C). About a quarter of the time, the low temperature is less than 38.5 °F (3.6 °C), and another quarter of the time, the low temperature is greater than and 45.1 °F (7.3 °C). About 95% of the time, the low temperature has been between 32.2 °F (0.1 °C) and 51.4 °F (10.8 °C).
Frost
On April 22 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 2.2% 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