- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On December 13 in NORTHERLY ISLAND the average high temperature is 41.8 °F (5.4 °C). The lowest recored high temperature was 26.6 °F (-3.0 °C) in 2024 and the highest recored high temperature was 61.9 °F (16.6 °C) in 2015. The high temperature is usually* between 35.2 °F (1.8 °C) and 48.3 °F (9.1 °C). About a quarter of the time, the high temperature is less than 35.2 °F (1.8 °C), and another quarter of the time, the high temperature is greater than and 48.3 °F (9.1 °C). About 95% of the time, the high temperature has been between 22.7 °F (-5.2 °C) and 60.8 °F (16.0 °C).
Low Temperatures
On December 13 in NORTHERLY ISLAND the average low temperature is 26.1 °F (-3.3 °C). The lowest recored low temperature was 5.0 °F (-15.0 °C) in 2024 and the lowest recored low temperature was 44.1 °F (6.7 °C) in 2015. The low temperature is usually* between 18.6 °F (-7.5 °C) and 33.6 °F (0.9 °C). About a quarter of the time, the low temperature is less than 18.6 °F (-7.5 °C), and another quarter of the time, the low temperature is greater than and 33.6 °F (0.9 °C). About 95% of the time, the low temperature has been between 4.3 °F (-15.4 °C) and 47.9 °F (8.8 °C).
Frost
On December 13 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 70.3% 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 2012 to 2024