Tuesday, July 21, 2009


July 18th turned out to be the coolest July day in recorded history at Indianapolis. Could the entire month be the coolest July on record? I'm not sure about that. We'll have to see, but the afternoon temperatures this month are extremely cool for this time of year. The average high temperature so far this month has been 77.5F (25C)! That's seven degrees cooler than the 30 year average high of 84F (29C). The map on the left shows the deviation from the maximum mean temperature from June 21 through July 21, 2009. You can see that the entire area has seen below normal temperatures. Yes, the map doesn't match with my numbers above, but the map is an extrapolation of temperatures based on Coop Observer reports from across the state. My numbers are for my specific location.

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