July 11 - 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 July 11 in NORTHERLY ISLAND the average high temperature is 79.6 °F (26.4 °C). The lowest recored high temperature was 72.0 °F (22.2 °C) in 2021 and the highest recored high temperature was 93.9 °F (34.4 °C) in 2019. The high temperature is usually^* between 74.8 °F (23.8 °C) and 84.4 °F (29.1 °C). About a quarter of the time, the high temperature is less than 74.8 °F (23.8 °C), and another quarter of the time, the high temperature is greater than and 84.4 °F (29.1 °C). About 95% of the time, the high temperature has been between 65.5 °F (18.6 °C) and 93.7 °F (34.3 °C).

Low Temperatures

On July 11 in NORTHERLY ISLAND the average low temperature is 67.3 °F (19.6 °C). The lowest recored low temperature was 62.1 °F (16.7 °C) in 2015 and the lowest recored low temperature was 71.1 °F (21.7 °C) in 2020. The low temperature is usually^* between 64.1 °F (17.8 °C) and 70.5 °F (21.4 °C). About a quarter of the time, the low temperature is less than 64.1 °F (17.8 °C), and another quarter of the time, the low temperature is greater than and 70.5 °F (21.4 °C). About 95% of the time, the low temperature has been between 58.0 °F (14.4 °C) and 76.6 °F (24.8 °C).

Frost

On July 11 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 2025

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