June 17 - NORTHERLY ISLAND - Weather History and Averages

Station: NORTHERLY ISLAND (2012 to 2025)
Country: US
State: IL
Latitude: 41.856
Longitude: -87.609

High Temperatures

On June 17 in NORTHERLY ISLAND the average high temperature is 80.5 °F (27.0 °C). The lowest recored high temperature was 60.1 °F (15.6 °C) in 2019 and the highest recored high temperature was 93.9 °F (34.4 °C) in 2022. The high temperature is usually^* between 74.1 °F (23.4 °C) and 87.0 °F (30.6 °C). About a quarter of the time, the high temperature is less than 74.1 °F (23.4 °C), and another quarter of the time, the high temperature is greater than and 87.0 °F (30.6 °C). About 95% of the time, the high temperature has been between 61.7 °F (16.5 °C) and 99.3 °F (37.4 °C).

Low Temperatures

On June 17 in NORTHERLY ISLAND the average low temperature is 61.4 °F (16.3 °C). The lowest recored low temperature was 53.1 °F (11.7 °C) in 2019 and the lowest recored low temperature was 72.5 °F (22.5 °C) in 2013. The low temperature is usually^* between 57.6 °F (14.2 °C) and 65.3 °F (18.5 °C). About a quarter of the time, the low temperature is less than 57.6 °F (14.2 °C), and another quarter of the time, the low temperature is greater than and 65.3 °F (18.5 °C). About 95% of the time, the low temperature has been between 50.2 °F (10.1 °C) and 72.6 °F (22.6 °C).

Frost

On June 17 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 0.0% of the time.

^{Usually* in this context means around 50% of the
time, assuming a normal distribution of values.}

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

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