- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On April 13 in NORTHERLY ISLAND the average high temperature is 60.4 °F (15.8 °C). The lowest recored high temperature was 44.4 °F (6.9 °C) in 2018 and the highest recored high temperature was 81.7 °F (27.6 °C) in 2023. The high temperature is usually* between 52.7 °F (11.5 °C) and 68.2 °F (20.1 °C). About a quarter of the time, the high temperature is less than 52.7 °F (11.5 °C), and another quarter of the time, the high temperature is greater than and 68.2 °F (20.1 °C). About 95% of the time, the high temperature has been between 37.9 °F (3.3 °C) and 83.0 °F (28.3 °C).
Low Temperatures
On April 13 in NORTHERLY ISLAND the average low temperature is 41.4 °F (5.2 °C). The lowest recored low temperature was 35.4 °F (1.9 °C) in 2013 and the lowest recored low temperature was 58.5 °F (14.7 °C) in 2023. The low temperature is usually* between 37.3 °F (2.9 °C) and 45.4 °F (7.5 °C). About a quarter of the time, the low temperature is less than 37.3 °F (2.9 °C), and another quarter of the time, the low temperature is greater than and 45.4 °F (7.5 °C). About 95% of the time, the low temperature has been between 29.6 °F (-1.4 °C) and 53.2 °F (11.8 °C).
Frost
On April 13 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 6.0% 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