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

Keeler Historical Degree Day Summary (Numerical Integration method) from 3/1 to 4/25 (Report issued 4/25/2024 6:43)

Year Degree Days Base 42°F Degree Days Base 45°F Degree Days Base 50°F Dates evaluated
2024 322 239 137 Current data from 3/1 through 4/25/2024 6AM.
2023 274 212 141 Data from 3/1 through 4/25/2023.
2022 231 171 100 Data from 3/1 through 4/25/2022.
Temperature data estimated for: 3/6/2022 1-2AM - 3/6/2022 3-4PM (15 hours); Total of 15 estimated hours
2021 336 254 149 Data from 3/1 through 4/25/2021.
2020 172 116 54 Data from 3/1 through 4/25/2020.
2019 228 168 94 Data from 3/1 through 4/25/2019.
Average of 5 years, not including current year 248.3 184.2 107.5 5 years with > 90% of data.
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