Average monthly wind speed in Prospect Heights (IL)

The mean monthly wind speed over the year in Prospect Heights (Illinois), the United States of America.

Wind speed in Prospect Heights varies across the year, ranging from 4 m/s (8 knots) to 6 m/s (12 knots).

The 4 m/s (8 knots) average in June, July, August and September means Prospect Heights experiences consistent moderate winds. Conditions vary from calm periods around to more active episodes throughout the month. At typical wind levels, smaller trees show steady branch movement. In common units, 4 m/s (8 knots) equals 14.4 km/h or 8.9 mph. While generally comfortable for most activities, occasional windy days may affect your plans and can make the air feel cooler.

The windiest time of year, January, March and April sees average wind speeds of 6 m/s (12 knots). This means most days have strong breezes that make entire trees sway and make umbrellas difficult to control. Wind pressure is clearly felt. The speed translates to 21.6 kilometers per hour or 13.4 miles per hour. While some moments are calmer or more intense, windy conditions dominate this period.

For more detailed information about Prospect Heights’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Prospect Heights climate page.