National Weather Service Forecast for: Lancaster, OH Issued by: National Weather Service Wilmington, OH

Updated: 2:27 am EDT Oct 31, 2026

Saturday Mostly Cloudy Sunday Partly Sunny Monday Slight Chance Rain Showers Tuesday Partly Sunny Wednesday Rain Showers Likely Thursday Rain Showers Likely Friday Chance Rain Showers   Hi 65 °F Hi 70 °F Hi 66 °F Hi 73 °F Hi 72 °F Hi 70 °F Hi 66 °F   Overnight Partly Cloudy Saturday Night Cloudy Sunday Night Mostly Cloudy Monday Night Mostly Cloudy Tuesday Night Mostly Cloudy then Chance Rain Showers Wednesday Night Rain Showers Likely Thursday Night Chance Rain Showers   Lo 41 °F Lo 50 °F Lo 51 °F Lo 50 °F Lo 56 °F Lo 54 °F Lo 49 °F

Forecast from NOAA-NWS for Lancaster, OH.

432
FXUS61 KILN 310427
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
1227 AM EDT Sat Oct 31 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1) A weak weather disturbance will bring a chance for some light rain
to the region Sunday into Monday. A stronger system will result in
more widespread precipitation for the middle part of next week.

&&

.DISCUSSION...
KEY MESSAGE 1)
Surface high pressure will move off to the east tonight ahead of a
weak mid level short wave that will move across the Ohio Valley
Sunday into Sunday night. We will be starting off quite dry across
the area, but an associated 20-30 knot low level jet ahead of this
system will nose into southwest portions of our area heading into
Sunday evening. This will allow for things to begin to moisten up
somewhat later Sunday afternoon and into Sunday night. This will
likely be enough for some scattered shower development, with the best
chances across our southwest, in the vicinity of the better forcing
associated with the low level jet. Suppose a few spotty showers could
linger into Monday, but generally expect a lull in any pcpn then
through Tuesday.

Models have come a bit more in line with the midweek system as the
upper level trough axis over the central CONUS moves east into the
Great Lakes and Ohio Valley region through Wednesday. This will bring
a developing chance for showers Tuesday night with fairly
widespread precipitation continuing into the day on Wednesday. Will
then linger some pcpn chances Thursday into Friday as some secondary
mid level energy will try to move through the Great Lakes and Ohio
Valley region.

&&

.AVIATION /03Z SATURDAY THROUGH WEDNESDAY/...
Surface high pressure will shift off to the east today with a fair
amount mid and high level cloudiness continuing to stream across the
region. Outside of perhaps some patchy river valley fog through
daybreak, expect VFR conditions to prevail through the TAF period.

OUTLOOK...MVFR cigs possible on Monday and Wednesday. MVFR vsbys
possible Wednesday.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.

&&

$$

DISCUSSION...JGL
AVIATION...JGL

NWS ILN Office Area Forecast Discussion