- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On April 23 in NORTHERLY ISLAND the average high temperature is 59.9 °F (15.5 °C). The lowest recored high temperature was 41.4 °F (5.2 °C) in 2023 and the highest recored high temperature was 82.2 °F (27.9 °C) in 2022. The high temperature is usually* between 52.8 °F (11.6 °C) and 66.9 °F (19.4 °C). About a quarter of the time, the high temperature is less than 52.8 °F (11.6 °C), and another quarter of the time, the high temperature is greater than and 66.9 °F (19.4 °C). About 95% of the time, the high temperature has been between 39.4 °F (4.1 °C) and 80.3 °F (26.8 °C).
Low Temperatures
On April 23 in NORTHERLY ISLAND the average low temperature is 41.6 °F (5.4 °C). The lowest recored low temperature was 35.1 °F (1.7 °C) in 2015 and the lowest recored low temperature was 57.4 °F (14.1 °C) in 2021. The low temperature is usually* between 38.6 °F (3.7 °C) and 44.7 °F (7.0 °C). About a quarter of the time, the low temperature is less than 38.6 °F (3.7 °C), and another quarter of the time, the low temperature is greater than and 44.7 °F (7.0 °C). About 95% of the time, the low temperature has been between 32.8 °F (0.4 °C) and 50.5 °F (10.3 °C).
Frost
On April 23 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 1.6% 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