textproduct: Indianapolis

KEY MESSAGES

- Dry and partly to mostly clear today-Tuesday with 40s overnight and afternoons nearing 70F

- Showers and a few t-storms late Tuesday and Tuesday night, especially north

- Stronger moderation with a few showers late this week

FORECAST UPDATE

Issued at 916 AM EDT Sun May 10 2026

Other than areas of mid level clouds lingering across south central Indiana...skies were sunny across the region as high pressure builds in from the north. 13Z temperatures were largely in the 50s with N/NE winds.

Quiet Mothers Days anticipated for the area as high pressure settles across the lower Great Lakes. The mid level clouds will gradually shift closer to the Ohio River as deeper moisture is forced into the Tennessee Valley. Cannot rule out a few flattened cu underneath the mid level inversion noted on model soundings for the afternoon but the lack of appreciable moisture through the boundary layer will largely limit clouds to thin cirrus.

Low level thermals support highs rising into the mid 60s to lower 70s from north to south. Zone and grid updates out.

DISCUSSION (Today through Saturday)

Issued at 336 AM EDT Sun May 10 2026

Dry conditions to return over central Indiana by daybreak as a few overnight showers yield to Canadian high pressure arriving on light northerly winds. This larger air mass will slowly cross the Great Lakes/Midwest through the early week, bringing another cooler trend of cool overnights and slightly below normal afternoon readings to the Hoosier State. Expect April-like conditions to prevail both today and Monday, with partly to mostly sunny skies and light cold- advective breezes promoting highs in the mid-60s to around 70F. Despite light overnight winds, any frost potential should be thwarted by low dewpoints limiting condensation, and temperatures no lower than the low to mid-40s.

Amid steady northwest flow aloft, upper riding on Tuesday and strengthening south-southwesterly breezes to return seasonably warm conditions with 70s and dewpoints climbing to 50F by late day. Broadening short wave pushing through the Great Lakes will bring a better chance for organized convective showers around the Tuesday night timeframe along with overall isolated thunder. Mediocre duration of better precipitable water and better forcing staying north should limit any non-zero severe threat, with light rainfall most likely northeast of Indianapolis.

Remainder of the forecast period to feature an upper ridge building over the western US...across the Plains and into the Midwest as a generally zonal flow aloft. Next round of northern high pressure to hold mainly near-normal temperatures and rain-free conditions through the remainder of the mid-week...before possibly more pronounced moderation towards the weekend which would include chances for at least widely scattered showers to end the long term.

AVIATION (12Z TAF Issuance)

Issued at 648 AM EDT Sun May 10 2026

Impacts:

- Light winds backing steadily within 320-040 degrees this morning

Discussion:

VFR conditions to prevail near central Indiana terminals through Monday morning. Anafrontal mid cloud currently departing the region to the east will be replaced by a couple rounds of mainly FEW/SCT high cloud. Light, mainly north-northeasterly winds early this morning will back slowly to 320-350 degrees by 18Z this afternoon as an axis of high pressure builds east across the southern Great Lakes. Winds will increase slightly through midday to 5-10KT this afternoon.

IND WATCHES/WARNINGS/ADVISORIES

None.