Surface high pressure will put a lid on cloud development for the foreseeable future in central Indiana. Today will be cooler and less windy than yesterday. A prolonged dry spell will persist through the week as that strong high pressure – and upper air ridging – dominate the region.
Normal highs and lows are currently right around 70 and 50, though steadily declining through the month and by mid month we lose another 4-6 degrees on average. Ridging nudges eastward over the region by the end of the week with increasing low level warm air advection resulting in above
normal high temperatures once again. Both long term and deterministic guidance are in good agreement with this warming trend with highs reaching the mid to upper 70s again by Friday. Watching Tuesday morning for the coolest lows in the long term period as optimal conditions for radiational cooling set up with high pressure directly overhead. The Wabash River Valley and wind sheltered spots away from urban areas have the potential to dip into the upper 30s around sunrise Tuesday morning. Not expecting frost, but morning lows will likely be noticeable cooler than what they have been this week.
There is some potential for precipitation near Sunday, with another quick moving upper low and cold frontal passage late next weekend into early the following week, but long term outlooks remain fairly strongly warm and dry, and prevailing westerlies look to remain displaced well poleward for most of the next couple of weeks at least. Climate Prediction Center 6-10 and 8-14 day outlooks are strongly indicative of below normal precipitation and nearly as strongly indicative of above normal temperatures, and this is well-supported by long term guidance, including the CFS.
INDY SEVEN DAY FORECAST
Today: Sunny and cooler. High 69.
Tonight: Clear. Low 43.
Tuesday: Sunny. High 72.
Tuesday Night: Clear. Low 46.
Wednesday: Sunny. High 76.
Wednesday Night: Clear. Low 46.
Thursday: Sunny. High 73.
Thursday Night: Clear. Low 48.
Friday: Sunny. High 75.
Friday Night: Mostly clear. Low 55.
Saturday: Mostly sunny. High 80.
Saturday Night: Mostly clear. Low 59.
Sunday: Partly sunny. Spotty showers. High 78.
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