874
FXUS63 KABR 180621
AFDABR

Area Forecast Discussion
National Weather Service Aberdeen SD
121 AM CDT Sun Oct 18 2026

.KEY MESSAGES...

- Dry conditions and slightly warmer than normal temperatures stick
around into the middle of the week. Lows tonight into Monday morning
could cause patchy areas of frost to form over north central SD,
otherwise low temperatures through the week will be too warm for
frost formation.

&&

.DISCUSSION...
Issued at 120 AM CDT Sun Oct 18 2026

As southerly winds continue over northeastern SD into early this
morning, there will be some stronger wind gusts from the downsloping
winds along the eastern edge of the Prairie Coteau. These winds
could gust up to 30-40 mph. A weak cold front will be moving into
central SD this morning and then into northeastern SD by the
afternoon. As this cold front moves in, the winds will turn to
become move northerly, cutting off the downsloping effects. This
will cause the wind gusts to decrease to below 20 mph by mid
morning. There is drier air located over central and northeastern SD
and west central MN, which will help to keep rain showers from
forming as the weak cold front moves through today.

High temperatures today will be 5-10 degrees warmer than normal, in
the mid to upper 60s. Once the cold front moves through,
temperatures will drop slightly, with high temperatures around
normal on Monday, in the upper 50s to low 60s. Low temperatures
tonight into Monday morning will cool slightly from last night, and
will be in the mid 30s to low 40s. The coldest temperatures will be
over north central SD, and could result in patchy areas of frost
form to form. Winds will turn to be from the southeast Tuesday,
which will help warmer air move into central and northeastern SD
again. This will warm temperatures to be slightly above normal again
for a couple of days. Additionally, while the dry air will move out
of the area after Monday, there will still be not enough moisture
for rain to develop as other boundaries move through.

&&

.AVIATION /06Z TAFS THROUGH 06Z MONDAY/...
Issued at 1231 AM CDT Sun Oct 18 2026

Terminals KABR,KATY,KPIR,KMBG

Good VFR conditions are forecast through Sunday evening.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.

&&

$$

DISCUSSION...12
AVIATION...10