By Rob Sirrine and Erin Lizotte
Weekly weather review
Temperatures across much of Michigan have been above average over the last month and very hot Wednesday-Thursday, July 23-24. With the warm weather, growing degree days (GDD) base 50 degrees Fahrenheit are now above average for most areas of the Lower Peninsula (March 1-July 22). The Upper Peninsula is more variable with below average to above average heat accumulation depending on location. Accumulated precipitation has been above average across most of the Upper Peninsula and northern lower Michigan and below average across west central, southwest and southcentral Michigan.
Accumulated GDD base 50 range from near 800 in the Upper Peninsula and around 1,700 in certain areas of southern Michigan. GDD base 50 are near or just slightly below the long-term average across most of state.
Source : msu.edu