If the month of June were to be any indication of what the summer would be like, I think we'd all be floating down the Mississippi River and out to sea! June saw nearly a foot of rain, 11.53 inches (293mm) to be exact. At least 0.1 inch (2.5mm) of rain fell on twenty days during June. It was definitely a wet month ending 7.19 inches (183mm) above normal. It was a warm month too ending 2.9 degrees F above normal. The warmest temperature occurred on the 20th at 91F (33C). The coolest temperature was 54F (12C) on the 30th.
The month of July was more moderate as far as the temperature goes, but the rain began to shut off. During the month of July, 1.99 inches (50mm) of rain fell. This was 2.38 inches (60mm) below normal. As I said, temperatures were more moderate but still warmer than normal. The month ended 1.5 degrees F above normal. The warmest temperature occurred on the 23rd at 90F (32C). The coolest temperature was 51F (11F) on the 2nd.
August continued the trend of warm and dry. August saw only 1.46 inches (37mm) of rainfall. This was 2.13 inches (54mm) below normal. August was hot ending 2.9 degrees F above normal. The warmest temperature was 94F (34C) on the 4th. This was the warmest temperature seen since August 2007. It's interesting to note also, that the heat index on August 4 was 112F (44C). That's the warmest heat index since August 2005. The coolest temperature was 52F (11C) on the 27th.
The summer of 2010 was hot and has been compared to the summer of 1988. That was hot!
Here's a summary of the summer by the National Weather Service in Indianapolis:
The month started off on a cooler note, with below average temperatures experienced at most locations on the first few days of the month. Those dates saw low temperatures in the 50s, something that would not be seen again at most areas for the remainder of the month. Just a few days later, hot and humid conditions moved into Central Indiana and these conditions would prevail for most of the rest of the month. Even on days with scattered showers and thunderstorms, temperatures had time to reach above average.
The hot and humid airmass kept temperatures well above average during the night. Across much of Central Indiana, over a third of the month had low temperatures at or above 70 degrees. At Indianapolis, the average low temperature during July 2010 ranked the 11th warmest. Indianapolis tied the record of 78 degrees for the warmest minimum temperature on July 23. The original record for the date was set in 1933.
The dry period at the end of June continued through the morning of the 8th. Once again, a prolonged unsettled weather pattern returned to central Indiana and continued through the end of July. The longest dry spell across the entire central and southern Indiana area was less than 3 days. Nearly daily afternoon and evening thunderstorms occurred. As is typical of convective rainfall, amounts varied greatly over short distances and coverage was not often widespread. Rainfall from these storms was quite intense at times. Several locations received 2 to more than 4 inches in a 3 to 6 hour period.
Localized flooding did occur during July in several areas of Indiana. The coverage and duration of the heavy rain was much less than in June. As a result, localized flooding lasted less than 12 to 24 hours. The heaviest rain in central and southern Indiana occurred during the evening of 17th when 3 to nearly 6 inches fell in portions of Owen and Greene Counties. The White River in Greene, Knox and Daviess Counties reached bankfull levels as a result.
The tropical conditions of July provided Indiana field crops excellent growing conditions. The frequent and at times abundant rainfall aided crop growth especially in much of western Indiana. Crops in dry areas like portions of Rush County suffered during the afternoon sun. The dry spell in early July allowed farmers to replant many areas flooded during June.