Indiana’s Weather For Monday

HEADLINES
– Breezy and cooler today…then dry, lighter winds and 70s for both Tuesday and Wednesday.
– Rain and t-storm chances return Thursday afternoon through Friday.

TODAY’S MAP

NWS TECHNICAL DISCUSSION

Scattered to numerous showers are expected to linger into east central
Indiana this morning but otherwise, the stratocu deck should gradually
mix out during the afternoon as surface high pressure builds in behind
the front along with drier air per Hi-Res soundings. BUFKIT Hi-Res
sounding momentum transfer also supports gusty southwest winds in the
wake of the front with gusts to 25+ knots possible. In addition,
soundings support mixing down from around 4K feet that should aid in
mixing out the stratocu deck. Cold air advection suggests afternoon
temperatures may only reach the middle 60s over the upper Wabash Valley
but temperatures over southeastern sections should at least reach the
lower 70s.

Tonight...

Surface high pressure over the area should result in winds becoming
light with decoupling and with a dry column good radiational cooling
potential. This should allow temperatures to bottom out much cooler
than the current with overnight lows in the middle and upper 40s.

&&

.LONG TERM (Tuesday through Sunday)...
Issued at 258 AM EDT Mon Apr 21 2025

Tuesday and Wednesday...

Weak surface ridging and a retracted mid-level pattern will promote
light breezes under mostly clear skies as the southerly flow brings
slow moderation through above normal levels.  Can not rule out a
stray sprinkle/shower across far northwestern zones late Tuesday
night as a weak warm frontal zone advances into the southern Great
Lakes, yet overall dry conditions are expected.  High temperatures
will trend upward through the 70s while morning minimums trend a
bit slower from the low 50s to mid-50s by Wednesday night.

Thursday through Sunday...

The surface ridge will depart to the east, leaving the Midwest amid
a broad fetch off of the Gulf...while rather weak surface low
pressure advances from the Texas Panhandle Thursday into the Great
Lakes by late Friday.  Chances of rain showers will accompany the
return of precipitable water values into the 1.00-1.50 inch range
around the late Thursday to Friday night timeframe.  What so far
looks to favor widespread light to moderate rainfall may well
include embedded heavier RW/TRW...although confidence in heavy
rainfall or any flooding is so far low.  Guidance is continuing to
show an amplifying upper pattern through the late long-term,
bringing a large dome of Canadian surface high pressure across the
Great Lakes...with thew southern portions of this ridge providing
mainly dry and seasonable conditions on northeasterly breezes
through the weekend.  The normal max/min at Indianapolis through the
long term is 67/47.

&&

INDY SEVEN DAY FORECAST
Today: Early morning showers. Breezy, with some sun in the afternoon. High 67.

Tonight: Mostly clear. Breezy in the evening. Low 46.

Tuesday: Mostly sunny. High 71.

Tuesday Night: Mostly clear. Low 51.

Wednesday: Mostly sunny. High 75.

Wednesday Night: Mostly clear. Low 56.

Thursday: Partly sunny. Spotty afternon shower chance. High 79.

Thursday Night: Spotty showers. Low 62.

Friday: Periods of showers and storms. High 74.

Friday Night: Periods of showers and storms. Low 51.

Saturday: Mostly cloudy early, then mostly sunny by afternoon. High 63.

Saturday Night: Mostly clear. Low 46.

Sunday: Partly sunny. High 66.

NWS CHARTS FOR TODAY/TONIGHT