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  • Michigan State University Extension
  • Michigan State University Ag Bio Research
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Mendon Heat Stress Summary Assist Chart (Report issued 4/20/2024 9:28 )

Year Degree Days Base 40 F
Number of days with DD > 35		 Degree Days Base 40 F
Total DD		 Temperatures greater than 90 F
Number of hours		 Temperatures greater than 90 F
Number of days		 Night temperatures greater than 70 F (10 PM - 8 AM)
Number of hours		 Night temperatures greater than 70 F (10 PM - 8 AM)
Number of days		 Rainfall (in.) Time period assessed
2024 0 200 0 0 0 0 1.89 4/6 to 4/20/2024
Missing temperature data: 4/20 (15 hours)
Missing rainfall data: 4/20 (15 hours)
2023 0 220 0 0 0 0 0.26 4/6 to 4/20/2023
2022 0 90 0 0 0 0 1.58 4/6 to 4/20/2022
2021 0 174 0 0 0 0 1.04 4/6 to 4/20/2021
2020 0 99 0 0 0 0 1.17 4/6 to 4/20/2020
2019 0 143 0 0 0 0 1.91 4/6 to 4/20/2019
Average of 5 years, not including current year 0 145 0 0 0 0 1.19 2019 to 2023
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