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

Updated: 4:53 pm EDT Apr 20, 2026

Tuesday Areas Of Frost then Mostly Sunny Wednesday Showers And T-Storms Likely Thursday Sunny Friday Mostly Sunny then Slight Chance Rain Showers Saturday Showers And T-Storms Likely Sunday Chance Rain Showers Monday Chance Rain Showers   Hi 73 °F Hi 72 °F Hi 78 °F Hi 81 °F Hi 75 °F Hi 72 °F Hi 70 °F   Tonight Mostly Clear then Areas Of Frost Tuesday Night Chance Showers And T-Storms Wednesday Night Chance Showers And T-Storms then Partly Cloudy Thursday Night Partly Cloudy Friday Night Chance Showers And T-Storms Saturday Night Showers And T-Storms Likely Sunday Night Chance Rain Showers   Lo 31 °F Lo 56 °F Lo 52 °F Lo 56 °F Lo 58 °F Lo 50 °F Lo 51 °F

Freeze Warning
 

Forecast from NOAA-NWS for Lancaster, OH.

891
FXUS61 KILN 202223
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
623 PM EDT Mon Apr 20 2026

.WHAT HAS CHANGED...
Decreased temperatures across central Ohio for tonight and increased
wind gusts for Tuesday.

&&

.KEY MESSAGES...
1) Below normal temperatures will continue through tonight before a
return to above normal temperatures on Tuesday.

2) Multiple systems will bring showers and some thunderstorms to the
region at times through the week.

&&

.DISCUSSION...
KEY MESSAGE 1)
Continued the freeze warning across portions of central Ohio and the
frost advisory just west of the freeze warning. Temperatures will
drop off quickly this evening with light winds and mostly clear skies
expected. Temperatures will drop into the 30s across most locations
overnight. As the night progresses warmer air will start to move into
the area and winds will start to pick up. This will be more
noticeable across western portions of the region. Due to this there
will be less chance for frost across the west. Across the east there
will be a lack of moisture so frost is not expected to be widespread,
but do have patchy to areas of frost.

KEY MESSAGE 2)
Several systems will bring showers and thunderstorms to the region.
One will move through Tuesday night into Wednesday. An active weather
pattern is expected over the weekend and into early next week with
shower and thunderstorm chances each day. A System Monday afternoon
into Monday night is expected to be stronger and lead to more of a
pattern change.

&&

.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
VFR conditions are expected through the TAF period. Clouds will
remain limited to some high and mid clouds, with the potential for a
few cumulus to develop tomorrow.

The main impact for this TAF period will be southwesterly wind gusts
tomorrow afternoon, potentially reaching as high as 30 knots. The
TAFs have gusts in the mid to upper 20 knot range, depending on the
airport, but a few gusts could reach a little higher than that. LLWS
is expected overnight into Wednesday morning, and this has been
included in the extended KCVG TAF.

OUTLOOK....Thunderstorms possible Tuesday night into Wednesday, and
then again on Friday and Saturday. MVFR conditions are possible on
Wednesday, Friday, and Saturday.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...Frost Advisory from 11 PM this evening to 10 AM EDT Tuesday for
     OHZ045-054-055-063-064-072-073-079>082-088.
     Freeze Warning from 11 PM this evening to 10 AM EDT Tuesday for
     OHZ046-056-065-074.
KY...Frost Advisory from 11 PM this evening to 10 AM EDT Tuesday for
     KYZ099-100.
IN...None.

&&

$$

DISCUSSION...
AVIATION...Hatzos

NWS ILN Office Area Forecast Discussion