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

Allegan Historical Degree Day Summary (Numerical Integration method) from 3/1 to 4/25 (Report issued 4/25/2024 23:28)

Year Degree Days Base 42°F Degree Days Base 45°F Degree Days Base 50°F Dates evaluated
2024 340 254 149 Current data from 3/1 through 4/25/2024 11PM.
2023 269 205 135 Data from 3/1 through 4/25/2023.
2022 238 179 109 Data from 3/1 through 4/25/2022.
2021 360 279 173 Data from 3/1 through 4/25/2021.
Temperature data estimated for: 3/28/2021 3-4PM - 3/28/2021 4-5PM (2 hours); Total of 2 estimated hours
2020 197 137 63 Data from 3/1 through 4/25/2020.
2019 247 185 109 Data from 3/1 through 4/25/2019.
Average of 5 years, not including current year 262.3 197 117.6 5 years with > 90% of data.
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