64.7 vs. 67.7 degrees F through June 24th.
Temperature (dark blue line graph 1) in Grand Rapids has been skewed slightly cooler than normal in 2019 overall.
You can appreciate this best from Heating Degree Days (green line graph 2) which have run slightly ahead of normal, meaning slightly more energy inputs than normal have been needed to stay warm to date.
Cooling Degree Days (green line graph 3) on the other hand show that 2019 to date has been well below normal, meaning we have needed near record low inputs (1958) to stay cool.
Contrary to popular opinion, the extremes have been phenomena of the past, not of the present. 1912 was coldest on record through June 24th on a Heating Degree Days basis, and 1921 the hottest on a Cooling Degree Days basis. Not needing many inputs in more recent times, to stay warm in 2012 or to stay cool in 1958, is a sign of . . . c l i m a t e m o d e r a t i o n.
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| Graph 1 |
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| Graph 2 |
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| Graph 3 |
