Illinois Water Survey
Institute of Natural Resources Sustainability
University of Illinois

Illinois State Climatologist Office

Jim Angel, state climatologist

Wind Roses and Wind Frequency Tables for Illinois

Jim Angel, state climatologist

These data are compiled from the few sites that have long-term wind statistics. The averaging period is 1961 to 1990.

Note: wind direction is reported as the direction from which the winds are blowing. For example, a "south wind" means the wind is blowing from the south to the north.

Chicago, IL
Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Rockford, IL

Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Springfield, IL

Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Peoria, IL

Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Moline, IL

Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Evansville, IN for Southeastern IL

Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

St. Louis, MO for Southwestern IL

Plot: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Frequency: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual