September 28 - 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 September 28 in NORTHERLY ISLAND the average high temperature is 71.4 °F (21.9 °C). The lowest recored high temperature was 59.2 °F (15.1 °C) in 2022 and the highest recored high temperature was 84.9 °F (29.4 °C) in 2021. The high temperature is usually^* between 66.6 °F (19.2 °C) and 76.3 °F (24.6 °C). About a quarter of the time, the high temperature is less than 66.6 °F (19.2 °C), and another quarter of the time, the high temperature is greater than and 76.3 °F (24.6 °C). About 95% of the time, the high temperature has been between 57.4 °F (14.1 °C) and 85.5 °F (29.7 °C).

Low Temperatures

On September 28 in NORTHERLY ISLAND the average low temperature is 58.2 °F (14.5 °C). The lowest recored low temperature was 48.9 °F (9.4 °C) in 2022 and the lowest recored low temperature was 65.3 °F (18.5 °C) in 2024. The low temperature is usually^* between 55.0 °F (12.8 °C) and 61.4 °F (16.3 °C). About a quarter of the time, the low temperature is less than 55.0 °F (12.8 °C), and another quarter of the time, the low temperature is greater than and 61.4 °F (16.3 °C). About 95% of the time, the low temperature has been between 48.9 °F (9.4 °C) and 67.5 °F (19.7 °C).

Frost

On September 28 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 2012 to 2024

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