- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On March 17 in NORTHERLY ISLAND the average high temperature is 48.8 °F (9.3 °C). The lowest recored high temperature was 32.0 °F (0.0 °C) in 2014 and the highest recored high temperature was 70.7 °F (21.5 °C) in 2015. The high temperature is usually* between 40.9 °F (4.9 °C) and 56.7 °F (13.7 °C). About a quarter of the time, the high temperature is less than 40.9 °F (4.9 °C), and another quarter of the time, the high temperature is greater than and 56.7 °F (13.7 °C). About 95% of the time, the high temperature has been between 25.8 °F (-3.4 °C) and 71.8 °F (22.1 °C).
Low Temperatures
On March 17 in NORTHERLY ISLAND the average low temperature is 31.2 °F (-0.4 °C). The lowest recored low temperature was 20.7 °F (-6.3 °C) in 2014 and the lowest recored low temperature was 44.8 °F (7.1 °C) in 2016. The low temperature is usually* between 26.9 °F (-2.8 °C) and 35.5 °F (1.9 °C). About a quarter of the time, the low temperature is less than 26.9 °F (-2.8 °C), and another quarter of the time, the low temperature is greater than and 35.5 °F (1.9 °C). About 95% of the time, the low temperature has been between 18.7 °F (-7.4 °C) and 43.7 °F (6.5 °C).
Frost
On March 17 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 55.0% 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