- Country: US
- State: IL
- Latitude: 41.856
- Longitude: -87.609
High Temperatures
On April 29 in NORTHERLY ISLAND the average high temperature is 59.8 °F (15.4 °C). The lowest recored high temperature was 45.0 °F (7.2 °C) in 2016 and the highest recored high temperature was 82.0 °F (27.8 °C) in 2025. The high temperature is usually* between 51.5 °F (10.8 °C) and 68.1 °F (20.0 °C). About a quarter of the time, the high temperature is less than 51.5 °F (10.8 °C), and another quarter of the time, the high temperature is greater than and 68.1 °F (20.0 °C). About 95% of the time, the high temperature has been between 35.6 °F (2.0 °C) and 83.9 °F (28.8 °C).
Low Temperatures
On April 29 in NORTHERLY ISLAND the average low temperature is 43.8 °F (6.6 °C). The lowest recored low temperature was 37.9 °F (3.3 °C) in 2019 and the lowest recored low temperature was 53.1 °F (11.7 °C) in 2024. The low temperature is usually* between 39.9 °F (4.4 °C) and 47.7 °F (8.7 °C). About a quarter of the time, the low temperature is less than 39.9 °F (4.4 °C), and another quarter of the time, the low temperature is greater than and 47.7 °F (8.7 °C). About 95% of the time, the low temperature has been between 32.5 °F (0.3 °C) and 55.2 °F (12.9 °C).
Frost
On April 29 in NORTHERLY ISLAND expect the temperatures to drop below freezing for a risk of frost about 2.1% 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