Station information
- Integrated Surface Dataset (ISD) station ID: 998499
- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On February 14 in NORTHERLY ISLAND the average high temperature is 34.9 °F (1.6 °C). The lowest recored high temperature was 15.1 °F (-9.4 °C) in 2021 and the highest recored high temperature was 53.1 °F (11.7 °C) in 2023. The high temperature is usually* between 27.6 °F (-2.5 °C) and 42.3 °F (5.7 °C). About a quarter of the time, the high temperature is less than 27.6 °F (-2.5 °C), and another quarter of the time, the high temperature is greater than and 42.3 °F (5.7 °C). About 95% of the time, the high temperature has been between 13.5 °F (-10.3 °C) and 56.4 °F (13.5 °C).
Low Temperatures
On February 14 in NORTHERLY ISLAND the average low temperature is 16.9 °F (-8.4 °C). The lowest recored low temperature was -2.2 °F (-19.0 °C) in 2021 and the lowest recored low temperature was 37.6 °F (3.1 °C) in 2013. The low temperature is usually* between 9.2 °F (-12.7 °C) and 24.6 °F (-4.1 °C). About a quarter of the time, the low temperature is less than 9.2 °F (-12.7 °C), and another quarter of the time, the low temperature is greater than and 24.6 °F (-4.1 °C). About 95% of the time, the low temperature has been between -5.5 °F (-20.8 °C) and 39.3 °F (4.1 °C).
Frost
On February 14 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 90.7% 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