textproduct: Indianapolis

KEY MESSAGES

- Cooler temperatures are expected through the weekend, with lows around freezing through Sunday night

- Highs return to the 60s early in the work week, but cooler temperatures will return mid-late week

- Isolated to scattered showers are possible Wednesday night into Thursday

DISCUSSION (This evening through Saturday)

Issued at 139 PM EST Sat Nov 7 2026

Surface analysis this afternoon shows high pressure over MO and southern IL. This was resulting in a cool northwest flow across central Indiana. GOES19 shows some high, thin wispy CI pushing across Indiana. The upper pattern across the United States was dominated by an upper low over WNY and another low just south of AZ. This was resulting in Pacific upper flow streaming across much of the country, streaming from the NW United States, across the Great Plains to the Ohio Valley and the Carolinas. Dew points across Central Indiana were in the lower to mid 30s.

Tonight...

Dry weather will continue to be expected tonight. An upper level trough will push across Ontario and the northern Great Lakes, but this forcing will stay well north of Indiana. Meanwhile at the surface, the strong high pressure system to our west will continue to build across Indiana. Forecast soundings and time heights continue to show a dry column with subsidence through the night. Thus Mostly Clear skies will be expected along with lows in the upper 20s and lower 30s.

Sunday and Monday...

More dry weather with above normal temperatures will be expected on Sunday and into Monday as we start the work week. Within the NW flow aloft, a trough is expected to push across the Great Lakes tonight, but any forcing with that system will remain well north of Central Indiana. Furthermore moisture remains an issued as high pressure south of Indiana blocks any gulf moisture. Time heights and forecast soundings remain dry also. Thus a mostly sunny Sunday will be expected. However a moderate pressure gradient will set up across the area resulting in some afternoon wind gusts.

Upper ridging will build across Indiana on Sunday night through Monday as the surface high pressure to the southwest rebuilds across Indiana. Again forecast soundings show a very dry column with ongoing subsidence. Thus expect another sunny day with highs reaching the lower 60s.

Tuesday through Saturday...

Mainly dry weather will be expected through the week with the exception of late Wednesday through Thursday.

Models show northwest flow in place across Indiana on Tuesday into Wednesday with the main northern jet north of Indiana, across the Great Lakes. Meanwhile high pressure over the northern plains on Tuesday will be building east and passing across Indiana through Wednesday. This will lead to continued dry and cool weather.

By Wednesday night and through Thursday, an upper trough is shown to drop out of western Ontario and deepen as it pushes across the Great Lakes and into Indiana with ample forcing available. An associated surface low is projected to push across Indiana on Wednesday Night and Thursday, as a cold front passes across the area on late Wednesday night. With these features in play, Chances for rain will need to be included.

By Friday, Indiana will find itself on the backside of the departing low and trough as a cool and strong area of Canadian high pressure builds across Indiana. Although an early, wrap around shower cannot be ruled out on Friday, dry weather and cooler weather building across the area will be the rule for Friday into Saturday, with below normal temperatures expected at that time.

AVIATION (18Z TAF Issuance)

Issued at 1150 AM EST Sat Nov 7 2026

Impacts:

- VFR Expected - Patchy fog possible late tonight into Sunday morning at LAF

Discussion:

VFR Conditions are expected this TAF period as high pressure over MO is expected to build across Indiana today and tonight before settling farther south on Sunday. GOES19 shows some wispy CI passing within the flow aloft, poised to push across the TAF sites, but this will not result in ceilings.

Dew point depressions look to fall to 2F or less late overnight, thus, some patchy fog cannot be ruled out for now. A more moderate pressure gradient will set up on Sunday as a westerly surface flow sets up over central Indiana due to strong low pressure over northern Ontario and strong high pressure over the southern plains and lower Mississippi valley.

IND WATCHES/WARNINGS/ADVISORIES

None.