textproduct: Indianapolis

KEY MESSAGES

- Dry yet pleasant fall weather continues through much of next week, above normal afternoon highs to exceed 75F on Thursday-Friday

- Patchy fog may occur in low lying areas late night/early mornings

- A wetter pattern may take shape for the Halloween weekend and/or the following week.

FORECAST UPDATE

Issued at 936 AM EDT Sun Oct 25 2026

Quiet weather will continue today across central Indiana. High clouds will move through, creating partly cloudy conditions at times. After a cool start this morning, temperatures will rebound nicely into the 70s for highs.

Adjusted hourly forecasts to match current observational trends but made no changes to the high temperature forecast.

DISCUSSION (Today through Saturday)

Issued at 345 AM EDT Sun Oct 25 2026

Dry and unseasonably mild to warm conditions will be the rule for central Indiana this week as persistent ridging directs better forcing to the west and north. High pressure will remain stacked from the Midwest to the Mid-Atlantic through the early week... continuing calm to very light winds that may occasionally drift out of the south, maintaining low early-autumn type humidity with dewpoints nearing 50F. Trend for greater cloud cover, albeit higher decks as the southern edge of moisture conveyor from the Plains to Great Lakes catches the area. Diurnal ranges to extend from 40s pre- dawn to afternoons 70-75F.

Overcast conditions possible around the late Tuesday/early Wednesday timeframe as small short wave lifts by the region..above a dry column unable to produce any precipitation. Next air mass will then transverse US-Canada border, holding chilly conditions to in New England before its center also slides down to the Mid-Atlantic by the end of the workweek. Noticeably stronger, yet reasonable surface gradient will return more seasonable breeze for the second half of the forecast period...with southerly gusts up to 10-15 mph on Thursday and Friday combining with ample sun to boost readings above 75 degrees, nearing daily records in the low 80s.

Rain showers are expected to finally reach central Indiana by next weekend when progression of a couple short waves strengthen and pick up adequate Gulf moisture while approaching IN from the southwest. A confluent downstream upper flow should keep the waves from departing Indiana too quickly...although any moderate or greater rainfall may be delayed to later next week when better forcing is favored while elevated precipitable water is still present.

AVIATION (12Z TAF Issuance)

Issued at 811 AM EDT Sun Oct 25 2026

Impacts:

- MVFR/worse visibility possible through 13Z outside of KIND

Discussion:

Patchy MVFR/worse visibility will be possible through 13Z at outlying terminals. Excepting any additional pre-dawn fog early Monday...VFR conditions will prevail over central Indiana through the TAF period. Axis of upper ridge will remain over Indiana into Monday, although rather damp column above 400 mb will promote FEW/SCT high cloud. Meanwhile rather weak surface ridge centered to the east will allow light southerly winds through this afternoon and another mainly calm overnight.

IND WATCHES/WARNINGS/ADVISORIES

None.