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This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- Patchy to widespread frost likely from late tonight to tomorrow morning, prompting a Frost Advisory

- Dry and quiet weather persists through the next 7 days with temperatures rebounding near to above normal by midweek

DISCUSSION (This evening through Sunday)

Issued at 301 PM EDT Sun Oct 18 2026

Rounds of surface high pressure will continue to bring dry weather and mostly clear skies throughout the week. Highs are expected to remain slightly above normal for this time of year while lows will start off slightly below normal and become near normal by midweek.

Temperatures tonight are again expected to drop into the 30s, but should stay in the mid to upper 30s range as more southerly flow today will help keep conditions slightly warmer than last night. Still expecting patchy to widespread frost across the forecast area tonight, especially in low lying areas so have another frost advisory from 2am to 9am. Lows the rest of the week should stay in the 40s so not expecting the need for additional headlines at this time.

Model soundings show persistent dry air through the column so most days throughout the week should see largely clear skies or only a few clouds. Chances for some clouds increase towards the end of the week/ weekend when the upper pattern becomes a bit more amplified and may bring in slightly more moisture.

There is some concern of worsening drought conditions and fire weather this week given the lack of precipitation. Daily minimum RH values will range from low 30 percentiles to around 50%. Luckily winds will not be much of a concern, but do take precautions with any open fires.

AVIATION (18Z TAF Issuance)

Issued at 159 PM EDT Sun Oct 18 2026

Impacts:

- None

Discussion:

VFR conditions are expected through the period.

Surface high pressure will continue to dominate the weather pattern. Winds will be more southerly today and expected to become light and variable to calm overnight and into the day tomorrow.

IND WATCHES/WARNINGS/ADVISORIES

Frost Advisory from 2 AM to 9 AM EDT Monday for INZ021-028>031- 035>049-051>057-060>065-067>072.

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