A nice start to the day. You may have noticed how comfy the air was this morning, thats because Dew Points dropped into the mid 50s. When it gets below that magical "60°" comfort line the air is more drier and it doesn't feel muggy. Also another contributing factor are the wind direction which will be coming from the northeast or rather shifting to more of a easterly flow. Most areas away from the city, especially North, dropped down into the low to mid 50s for morning temps. Here's a look at morning lows around the state. Indianapolis dropped to 63° for the AM low. It looks like the Knox area came in the coolest at 50°.
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Plenty of sunshine expected today, this coupled with lower dew points (low humidity) & a dry day will make for a Spectacular Saturday. Highs should make it up to atleast the low, if not mid 80s. This may likely be the nicest day we'll see over the next 2 weeks. The temps will go up, the humidity will return, the air quality will become poor, and we'll keep the abnormally dry conditions. Yesterday marked the 14th consecutive day without measurable rainfall at the NWS office at Indianapolis International Airport (Indy's official weather recording station). The record is 39 set back in 1908. I'm sure you remember last June 2012, with 0.09" of rain it was the driest June ever and it was the 2nd driest month ever on record. The month saw a 24 day stretch of dry weather. Will we come close to that? Only time will tell but numbers aren't too great for the next 7 days (the rest of this month). Perhaps a better chance in September. So far this is the 28th driest summer and 7th driest August on record.
We may challenge record temperatures next week but there is indications that the heat will not last beyond perhaps the next 2 weeks. We only avg about 4 90° days for the rest of the year. I've scanned weather records back over the past 10-15 years and we have a good chance at seeing our 1st 60° high temperature reading during the month of September. Also a good chunk of Septembers also see the 1st 40° lows. Though not too frequent, but not uncommon, there is a possibility that a September could also see a 30° low and a 50° high. We typically don't see those until October though.
We haven't seen one this year but latest triple digit high ever to be recorded in a year falls on September 15, 1939. The latest 90° day is October 8, 2007. The average date for our first fall frost is around October 7th while the average date for our first fall freeze is on October 16th. The earliest frost came as early as September 20, 1991 while the latest first frost came as late as October 28, 2005. The earliest first freeze came as early as September 30, 1993 while the latest first freeze came as late as November 8, 1956.
Here's a 10 year history on those cool September days
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