- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On February 12 in NORTHERLY ISLAND the average high temperature is 34.8 °F (1.6 °C). The lowest recored high temperature was 23.0 °F (-5.0 °C) in 2016 and the highest recored high temperature was 51.6 °F (10.9 °C) in 2023. The high temperature is usually* between 27.9 °F (-2.3 °C) and 41.7 °F (5.4 °C). About a quarter of the time, the high temperature is less than 27.9 °F (-2.3 °C), and another quarter of the time, the high temperature is greater than and 41.7 °F (5.4 °C). About 95% of the time, the high temperature has been between 14.8 °F (-9.5 °C) and 54.8 °F (12.7 °C).
Low Temperatures
On February 12 in NORTHERLY ISLAND the average low temperature is 20.3 °F (-6.5 °C). The lowest recored low temperature was 4.1 °F (-15.5 °C) in 2014 and the lowest recored low temperature was 36.0 °F (2.2 °C) in 2017. The low temperature is usually* between 14.2 °F (-9.9 °C) and 26.4 °F (-3.1 °C). About a quarter of the time, the low temperature is less than 14.2 °F (-9.9 °C), and another quarter of the time, the low temperature is greater than and 26.4 °F (-3.1 °C). About 95% of the time, the low temperature has been between 2.5 °F (-16.4 °C) and 38.0 °F (3.4 °C).
Frost
On February 12 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 90.2% 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