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  • Michigan State University Extension
  • Michigan State University Ag Bio Research
  • Project GREEEN

South Haven Historical Degree Day Summary (Numerical Integration method) from 3/1 to 4/20 (Report issued 4/20/2024 1:00)

Year Degree Days Base 42°F Degree Days Base 45°F Degree Days Base 50°F Dates evaluated
2024 264 192 108 Current data from 3/1 through 4/20/2024 1AM.
2023 247 193 128 Data from 3/1 through 4/20/2023.
Temperature data estimated for: 3/4/2023 7-8AM (1 hour); 3/5/2023 7-8AM (1 hour); 3/10/2023 6-7PM (1 hour); 3/11/2023 6-7PM - 3/11/2023 7-8PM (2 hours); 3/11/2023 9-10PM (1 hour); 3/13/2023 10-11AM (1 hour); 3/24/2023 7-8PM - 3/25/2023 9-10AM (15 hours); 3/25/2023 6-7PM - 3/26/2023 8-9AM (15 hours); 3/26/2023 5-6PM - 3/27/2023 8-9AM (16 hours); 3/27/2023 8-9PM - 3/28/2023 7-8AM (12 hours); 3/28/2023 8-9PM - 3/29/2023 8-9AM (13 hours); 3/30/2023 3-4PM - 3/30/2023 4-5PM (2 hours); Total of 80 estimated hours
2022 154 114 64 Data from 3/1 through 4/20/2022.
2021 294 228 141 Data from 3/1 through 4/20/2021.
2020 132 90 40 Data from 3/1 through 4/20/2020.
2019 119 80 39 Data from 3/1 through 4/20/2019.
Average of 5 years, not including current year 189.2 140.9 82.4 5 years with > 90% of data.
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