textproduct: Indianapolis

KEY MESSAGES

- Dry yet pleasant fall weather continues through early next week with above normal afternoon highs

- Patchy fog possible in low lying areas late night/early mornings through Sunday morning

- A wetter pattern may take shape towards the Halloween weekend

DISCUSSION (This evening through Friday)

Issued at 255 PM EDT Fri Oct 23 2026

Quiet weather is expected through the next seven days as surface high pressure remains dominant across the region. Guidance is in good agreement through the weekend, showing upper ridging moving eastward across the region while surface high pressure centered over the Northeast extends back into central Indiana. Large scale subsidence from these features will continue to keep the forecast dry. Light winds combined with mostly clear skies may continue to promote patchy ground fog in climatologically favored locations the next few nights.

Temperatures will slightly warm by Sunday due to return flow as surface high pressure shifts further east. An upper trough moving across Canada early next week will attempt to push a weak front into the area. Latest guidance generally shows mean flow becoming parallel to the boundary which should stall out front as it approaches. Marginal forcing and very limited moisture from the gulf remaining cutoff will likely limit any chance for measurable precipitation. A slight cooldown of a degrees may be the only noticeable impact from the system, but this will be more due to increasing clouds. Expect dry conditions to persist as surface high pressure remains in control.

Ensemble guidance begins to diverge towards late next week resulting in greater uncertainty. Limited moisture return and weak overall forcing should keep weather conditions mostly quiet. A deeper trough along with more substantial moisture advection appears increasingly likely towards the beginning of November which suggest greater chances for precipitation. Exact details remain uncertain at this time. Look for highs to generally range from the upper 60s to mid 70s through the period. Overnight temperatures will mostly fall into the 40s with slightly warmer lows possible towards the middle of next week

AVIATION (18Z TAF Issuance)

Issued at 1253 PM EDT Fri Oct 23 2026

Impacts:

- Brief MVFR VIS in patchy ground fog possible from 10-13Z Saturday

Discussion:

VFR conditions are expected through the period as surface high pressure remains over central Indiana. Only a few high clouds and a light predominately east-southeasterly breeze is expected.

Carbon-copy of recent patchy and at times transient ground fog near KLAF/KHUF/KBMG is possible pre-dawn Saturday. Any fog that develops should quickly mix out after sunrise.

IND WATCHES/WARNINGS/ADVISORIES

None.