Updated 09.12.13 @ 4:59p

Zionsville, IN A series of cold fronts sweep the state tonight.  This will help usher in our first true taste of autumn for the season, just in time for another special football weekend ahead!  Don’t get used to the chilly conditions as resurgent heat, and better rain chances lie ahead. We discuss below!

Chilly Air Blows Into Town: A series of cold fronts are in progress of blowing through central Indiana. One is already through with another waiting in line. This secondary cold front packs some chilly air behind it and will result in temperatures in the upper 40s for many come morning.  Talk about stark contrast from heat indices in the 100s earlier this week!  We’ll note some instability-driven puffy cumulus clouds forming during the afternoon, but these will clear and give way to a calm, chilly night. Overnight lows Saturday morning will fall into the 30s for outlying areas.

Weak Cold Front Sunday: A weak cold front will lead to afternoon clouds and the threat of an isolated thunderstorm Sunday afternoon/ evening. We think 80-90% of the coverage area remains rain-free for now, but we’ll keep an eye on things and update accordingly.  This boundary will be responsible for keeping things dry and pleasant through early next week.

The Heat Returns: While we don’t anticipate anything nearly as brutal as this past week’s stretch of heat, the thermometer will flirt with the 90 degree mark once again come Wednesday.  Strong southwest winds will blow a warmer, more humid brand of air north bound for mid week and have overnight lows only falling into the lower 70s. A cold front will approach the region late next week, leading to what appears to be some scattered to numerous showers and thunderstorms by next Thursday.

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Updated 09.11.13 @ 10:06p

Zionsville, IN After three brutally hot late summer days, I know most are looking forward to a big time change for the cooler as we close out the work week and head on into the weekend!  We talk temperature changes, slim chances for some badly needed rainfall, and another stretch of heat next week!

Cold Front Blows Through Later This Morning: A strong cold front will usher in a true taste of autumn just in time for another special football weekend ahead!  We bracket the wee morning hours through late morning for the chance of a shower or embedded rumble of thunder as the cold front blows through central Indiana.  That said, we’re only looking at a broken line of precipitation and don’t think every neighborhood gets wet.  Those that do see rain, don’t look for anything too terribly impressive, with most precipitation totals under two tenths of an inch. Winds will then shift out of the northwest and gust upwards of 20 MPH during the evening, helping the drastically cooler air settle in. Temperatures will actually fall during the afternoon, after early highs in the upper 70s.

Brilliant, Fall-Like Late Week: Despite a few puffy cumulus clouds Friday, expect dry conditions extending into Saturday with lots of sunshine. Temperatures will run roughly ten degrees below normal. In fact, Saturday morning will be particularly chilly, especially considering the simmering heat earlier this week. Some outlying communities will likely fall into the upper 30s. Highs both Friday and Saturday will only make it into the upper 60s. – Sounds like a perfect weekend to grab a Pumpkin Spice Latte prior to kickoff of your favorite football team!

Sunday Shower? A weak cold front will slide through the region Sunday evening. Clouds will increase with this boundary and we’ll keep an eye on precipitation chances as we move forward. That said, for now, we only think a widely scattered shower is possible Sunday. Most stay dry.

Resurgent Warmth Next Week: As we’ve been saying for weeks, we’re still in a warm pattern, overall, and don’t see any significant changes until potentially late in the month (say the last 5-7 days). Ridging rebuilds by the middle part of next week and moderating temperatures will ensue. We anticipate highs flirting with the 90 degree mark by Wednesday.

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