Issue 7, June 10, 2013

Modified Growing Degree Days (Base 50°F,  March 1 through June 6)

Station Location

Actual Temperature

Historical Average (11 year)

One-Week Projection

Two-Week Projection

Freeport

544

539

663

810

St. Charles

564

509

675

812

DeKalb

569

589

693

843

Monmouth

629

648

757

909

Peoria

665

687

797

953

Champaign

723

708

861

1024

Springfield

764

784

907

1075

Brownstown

778

850

926

1096

Belleville

826

885

967

1127

Rend Lake

905

954

1061

1239

Carbondale

890

904

1038

1204

Dixon Springs

908

968

1059

1228

Insect development is temperature dependent. We can use degree days to help predict insect emergence and activity.  Home, Yard, and Garden readers can use the links below with the degree day accumulations above to determine what insect pests could be active in their area.

GDD of Landscape Pests

GDD of Conifer Pests


Degree day accumulations calculated using the Illinois IPM Degree-Day Calculator (a project by the University Of Illinois Department Of Crop Sciences and the Illinois Water Survey). (Kelly Estes)

Author:
Kelly Estes

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