Summer 2007 Summary

Summer 2007 Summary
 
The days are beginning to get shorter, and the nights a bit longer and cooler. Thoughts of fall are swirling in the air with the cool-down of the past few days, and for good reason. As September 1st comes to pass, it marks the start of meteorological autumn. And as this happens, it also marks the end of meteorological summer, a period that lasts from June 1st through August 31st.
 
Temperatures
 
The summer of 2007 was tied for 17th warmest summer ever, with an average temperature of 76.1 degrees. The normal summer time average temperature is 73.5 degrees, making 2007 above normal by 2.6 degrees.
 
For the season as a whole, it was the hottest summer since 2002. The average temperature in that summer was 76.5 degrees.
 
The most remarkable month this summer for temperatures was August. It was the third hottest August ever at Indianapolis. This was balanced out by a cooler than normal July, and a June that was only slightly above normal. These cooler months acted to make it only the 17th warmest summer ever, even though it likely seemed to be an extremely long and hot summer to many residents of the Hoosier State because of how unusually hot August was.
 
There were 30 days of 90 degrees or hotter during summer 2007. A normal summer would expect to see 15 days of 90 degrees or more. The last time Indianapolis had 30 days of 90 or more in the summer time was 2002, which also had 30 days. The all time record for summer highs in the 90s belongs to 1983 with 49 days in the June through August period.
 
Here are temperatures for other selected Central Indiana sites during summer 2007
 
Site
Summer 2007 Temperature
Normal Temperature
2007 Diff. From Normal
Indianapolis Int’l Arpt
76.1
73.5
+2.6
Lafayette
74.2
72.0
+2.2
Muncie
72.9
72.5
+0.4
Terre Haute
74.0
74.2
+0.2
Bloomington
74.9
73.4
+1.5
Shelbyville
73.7
73.4
+0.3
Indianapolis – Eagle Creek
75.7
73.5
+2.2
 
 
 
Rainfall
 
Rain during the summer of 2007 was very hard to come by. Each of the three months was below normal at Indianapolis. August 20th brought the heaviest rainfall of the entire summer when 2.22 inches fell at Indianapolis International Airport. This amount was 29% of the entire summer rainfall.
 
Overall this was the 24th driest summer on record and the driest since 1999. The total rainfall for Indianapolis this summer was 7.55 inches. The normal rainfall total for summer is 12.37 inches, which made this year below normal by 4.82 inches. Typically summer is the wettest season of the year, but this year saw very dry weather during what should typically be a period of more abundant moisture.
 
Here is some additional rainfall information for other sites during summer 2007:
 
Site
Summer 2007 Rainfall
Normal Rainfall
2007 Diff. From Normal
Indianapolis Int’l Arpt.
7.55
12.37
-4.82
Lafayette
7.35
11.92
-4.57
Muncie
5.55
11.75
-6.20
Terre Haute
10.94
12.26
-1.32
Bloomington
9.74
12.38
-2.64
Shelbyville
5.04
11.45
-6.41
Indianapolis – Eagle Creek
8.37
12.37
-4.00
 

Data Prepared by Logan Johnson, Climate Services Focal Point
Assistance from National Weather Service, Indianapolis Forecast Team


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