textproduct: Indianapolis

KEY MESSAGES

- Rain-free early summer weather with low humidity through Friday, highs 80-85 degrees

- Next chance for numerous/widespread showers and a few storms will be late Friday night into Sunday

- Typical early summer to start next week...moderate humidity, temperatures from 60s to 80s each day, showers/t-storms possible

DISCUSSION (Today through Tuesday)

Issued at 329 AM EDT Wed Jun 3 2026

Today through Friday...

Pleasant early summer conditions will continue under Canadian surface high pressure, stretched from Wisconsin to the Central Appalachians this morning...that will continue to drift slowly east through Friday. Axis of corresponding H500 subtropical ridge will shift from Illinois today to the Mid South by Thursday. Surface flow to then adjust from light east-southeasterly breezes this afternoon...to increasing south-southwest winds Thursday...and robust southwest breezes Friday. Humidity to therefore rebound from anomalously low values Tuesday...with dewpoints around 50F today and nearing 60F by Friday night. Broad western portion of the surface ridge to maintain dry conditions through Friday, with afternoon cumulus the main variable. Expect highs to nudge from low 80s today to mainly mid-80s on Friday.

Saturday through Tuesday...

A brief pause between established upper ridging over central North America will allow a short wave to slowly cross the Great Lakes Saturday into Sunday. A broad ribbon of decent Gulf moisture with precipitable water values mainly 1.25-1.60 inches will correspondingly cross the CWA, and perhaps linger south of I-70 from the stalled boundary lingering towards the Ohio Valley. This will translate to higher chances of showers late Friday night through Saturday night, especially across northern zones which will be closer to perhaps mediocre forcing...with overall lower confidence in any appreciable rainfall. A few thunderstorms are expected, especially

Typical early summer conditions to prevail through next week's first several periods under the next upper ridge building from the southern Plains northeastward across the Upper Mississippi Valley into Ontario and Quebec. The weekend short wave that should cut off over the Mid-Atlantic, although lower confidence on how far it retrogrades west towards, or even into the Midwest. While this set- up should keep most Gulf moisture suppressed to the south, a fetch of easterly breezes is expected to advect Atlantic air...maintaining moderate summertime humidity with dewpoints in the 60s and seasonable to slightly above normal afternoon readings in the 80s. Occasional chances for widely scattered diurnally-driven showers and a couple t-storms are expected.

AVIATION (12Z TAF Issuance)

Issued at 655 AM EDT Wed Jun 3 2026

Impacts: None

Discussion:

VFR conditions to continue through Thursday morning across central Indiana as the center of broad, stacked ridging slides across the Midwest to the southeastern US. SKC early this morning should yield to FEW/SCT high cloud late this morning, and at times FEW cumulus later today after southeast flow boosts humidity closer to seasonal.

Widespread subsidence will prevail through the dry column...but enough low level moisture may reach the region from the southeast by 19Z to generate FEW diurnal cumulus. Any cu that forms will diminish towards sundown. Calm and/or light NE winds early today will yield to ESE flow sustained under 7KT by 16Z...and around 5-8KT through the afternoon. Light and variable winds to be the rule tonight.

IND WATCHES/WARNINGS/ADVISORIES

None.