GDD Base 50 Maps
Below are links to maps that indicate the average calendar dates when regions surrounding the Great Lakes reach a particular accumulation of degree days (base 50 degrees F) with measurement beginning March 1. Read more about using degree days for pest management.
- 50 GDD
- 100 GDD
- 150 GDD
- 200 GDD
- 250 GDD
- 300 GDD
- 350 GDD
- 400 GDD
- 450 GDD
- 500 GDD
- 550 GDD
- 600 GDD
- 650 GDD
- 700 GDD
- 750 GDD
- 800 GDD
- 850 GDD
- 900 GDD
- 950 GDD
- 1000 GDD
- 1050 GDD
- 1100 GDD
- 1150 GDD
- 1200 GDD
- 1250 GDD
- 1300 GDD
- 1350 GDD
- 1400 GDD
- 1450 GDD
- 1500 GDD
- 1550 GDD
- 1600 GDD
- 1650 GDD
- 1700 GDD
- 1750 GDD
- 1800 GDD
- 1850 GDD
- 1900 GDD
- 1950 GDD
- 2000 GDD