December 19 - 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 December 19 in NORTHERLY ISLAND the average high temperature is 37.5 °F (3.1 °C). The lowest recored high temperature was 21.0 °F (-6.1 °C) in 2016 and the highest recored high temperature was 49.6 °F (9.8 °C) in 2017. The high temperature is usually^* between 32.7 °F (0.4 °C) and 42.3 °F (5.7 °C). About a quarter of the time, the high temperature is less than 32.7 °F (0.4 °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 23.6 °F (-4.7 °C) and 51.4 °F (10.8 °C).

Low Temperatures

On December 19 in NORTHERLY ISLAND the average low temperature is 23.6 °F (-4.7 °C). The lowest recored low temperature was -3.8 °F (-19.9 °C) in 2016 and the lowest recored low temperature was 40.3 °F (4.6 °C) in 2017. The low temperature is usually^* between 16.6 °F (-8.6 °C) and 30.5 °F (-0.8 °C). About a quarter of the time, the low temperature is less than 16.6 °F (-8.6 °C), and another quarter of the time, the low temperature is greater than and 30.5 °F (-0.8 °C). About 95% of the time, the low temperature has been between 3.3 °F (-15.9 °C) and 43.8 °F (6.6 °C).

Frost

On December 19 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 79.3% 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 2012 to 2024

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