- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On May 13 in NORTHERLY ISLAND the average high temperature is 66.2 °F (19.0 °C). The lowest recored high temperature was 49.1 °F (9.5 °C) in 2013 and the highest recored high temperature was 82.9 °F (28.3 °C) in 2024. The high temperature is usually* between 58.4 °F (14.7 °C) and 74.1 °F (23.4 °C). About a quarter of the time, the high temperature is less than 58.4 °F (14.7 °C), and another quarter of the time, the high temperature is greater than and 74.1 °F (23.4 °C). About 95% of the time, the high temperature has been between 43.4 °F (6.3 °C) and 89.1 °F (31.7 °C).
Low Temperatures
On May 13 in NORTHERLY ISLAND the average low temperature is 48.4 °F (9.1 °C). The lowest recored low temperature was 42.1 °F (5.6 °C) in 2019 and the lowest recored low temperature was 61.0 °F (16.1 °C) in 2022. The low temperature is usually* between 44.6 °F (7.0 °C) and 52.3 °F (11.3 °C). About a quarter of the time, the low temperature is less than 44.6 °F (7.0 °C), and another quarter of the time, the low temperature is greater than and 52.3 °F (11.3 °C). About 95% of the time, the low temperature has been between 37.3 °F (3.0 °C) and 59.5 °F (15.3 °C).
Frost
On May 13 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 0.2% 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