Issue 8, June 14, 2013
Modified Growing Degree Days (Base 50° F, March 1 through June 14)
Station Location |
Actual Temperature |
Historical Average (11 year) |
One-Week Projection |
Two-Week Projection |
Freeport |
673 |
658 |
819 |
976 |
St. Charles |
685 |
620 |
823 |
972 |
DeKalb |
707 |
713 |
857 |
1018 |
Monmouth |
775 |
776 |
927 |
1086 |
Peoria |
808 |
819 |
964 |
1132 |
Champaign |
871 |
846 |
1034 |
1207 |
Springfield |
921 |
927 |
1089 |
1267 |
Brownstown |
931 |
998 |
1102 |
1283 |
Belleville |
982 |
1026 |
1142 |
1319 |
Rend Lake |
1071 |
1110 |
1248 |
1435 |
Carbondale |
1046 |
1052 |
1212 |
1387 |
Dixon Springs |
1065 |
1119 |
1233 |
1410 |
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).
Author:
Kelly Estes