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

Fennville Historical Degree Day Summary (Numerical Integration method) from 3/1 to 3/29 (Report issued 3/29/2024 7:27)

Year Degree Days Base 42°F Degree Days Base 45°F Degree Days Base 50°F Dates evaluated
2024 113 82 47 Current data from 3/1 through 3/29/2024 7AM.
2023 15 5 1 Data from 3/1 through 3/29/2023.
2022 65 45 23 Data from 3/1 through 3/29/2022.
Temperature data estimated for: 3/1/2022 Midnight-1AM - 3/13/2022 Midnight-1AM (289 hours); 3/13/2022 2-3AM - 3/17/2022 Noon-1PM (107 hours); Total of 396 estimated hours
2021 112 81 44 Data from 3/1 through 3/29/2021.
2020 60 37 13 Data from 3/1 through 3/29/2020.
2019 31 20 6 Data from 3/1 through 3/29/2019.
Average of 5 years, not including current year 56.6 37.5 17.4 5 years with > 90% of data.