Monday, September 02, 2013

Where Does this Summer's Temperatures/Rainfall Rank? Final Summer Numbers

We had a lot of afternoons like this in northern Ohio this summer!
I still can't believe most of summer is behind us.  What a summer it was....or wasn't. Daytime temps were much "cooler" than in recent summers.  We only had two distinct bouts of heat. The first was in mid-July, the second was in late August.

Was this summer as "cool" as what we believe? Let's look at the chart comparing this summer's average high temperature to the summers of the recent and distant past. The first chart shows each summer since 1871. This summer is circled in BLUE.  Bear with me here. I have a lot to cover so take your time.

Let's clean up the chart a bit by only showing the last 50 summers (since 1963) helping this summer stand out a bit more. It clearly shows that this summer was "cooler" than recent summers (2012, 11, 10).


 When we average in the overnight lows AND the high temperatures, we get a more complete picture of the summer temps as a whole (day and night). First, we start with each summer since record keeping began in 1871. This shows a warming trend since the late 1950s...

Shrinking the graph inside 50 years reveals a slight increase in overall temperature in Cleveland with plenty of "cooler" summers versus this summer.

In fact, 35 of the last 50 summers were COOLER OVERALL than 2013!

What about 90 degree days? We only had 6 days above 90 this year.

What years had equal or less 90 degree days in recent memory?  How about 2009, 2008, 2006, 2004 and 2000 (no 90 degree days that year)

This next chart really tells the story of this summer.  I added up the days we had high temperatures below 75. While not a record, this summer was comparable to 2009 with 26 days with highs at or below 75. 

Notice some of the years in the not-so-distant past:  2004, 2000, 1997, 1992, 1990 & 1985. These summers had far more "cooler" days than 2013

Were the nights abnormally warmer this summer?   

It looks like it. Over the last 40 years, only 10 summers had WARMER OVERNIGHTS. 

The other huge element to the summer was the abundant rainfall not only in Cleveland but across all of northern Ohio.   

Only 7 summers in the last 143 years of record keeping had more rain than this summer!

Akron and Mansfield also ranked very high...

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