Average wind speed in Northbrook (IL)
The mean monthly wind speed over the year in Northbrook (Illinois), the United States of America (meters per second).
Throughout the year, wind speeds average from 4 m/s during June, July, August and September and increase to 6 m/s in January, March and April.
Forecast for Northbrook (IL)
broken clouds and no rain
broken clouds and small chance of slight rain
overcast and heavy rain