Chadron, Nebraska 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

658
FXUS65 KCYS 302051
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
251 PM MDT Fri Oct 30 2026

.KEY MESSAGES...

- Locally dense fog is possible over portions of the High Plains
  Friday night into Saturday morning.

- Mild conditions are expected for Halloween (Saturday), though
  a few showers will be possible along and west of I-25.

- A complex but disorganized storm system will move into the
  area Sunday, bringing cooler temperatures and a chance for
  rain and high elevation snow showers.

- Widespread blustery conditions are anticipated Monday into
  Tuesday along and east of the Laramie range.

&&

.SHORT TERM /THROUGH SUNDAY/...
Issued at 246 PM MDT Fri Oct 30 2026

Expect an uneventful rest of the day as the CWA sits at the edge of
an upper-level ridge to the east. Some low stratus still lingers in
the Nebraska panhandle, and will likely stay through the overnight
hours. Places without cloud cover are having a pleasant, mild day,
with highs in the 50s and 60s. Continued light southerly flow into
the overnight hours will lead to another round of likely dense fog
developing overnight and continuing into Saturday morning. An
area from Cheyenne to Sidney to Alliance is the most likely area
to see dense fog Saturday morning, making for a spooky start to
Halloween!

Areas west of the Laramie Range will likely see a showery start to
Halloween as a shortwave moves across the Rockies. Hi-Res guidance
has precipitation moving into Carbon County early Saturday morning
and moving eastward into Albany County by mid-morning. For the
most part, Hi-Res guidance shows this as the areal extent of
precipitation coverage, with showers dissipating before reaching
the Laramie Range. Once the stratiform precipitation
dissipates, a few isolated showers could still be possible
during the afternoon, but overall looks like great trick or
treating weather across the forecast area. Mild temperatures
will continue for Saturday with highs in the 50s and 60s. By the
evening hours, temperatures will fall into the 40s and 50s,
perfect temperature to keep your candy from melting! The
remainder of Saturday night will be uneventful, with the
potential for more fog developing in the Nebraska panhandle
overnight.

Sunday has the potential to be a much wetter day as a moisture-rich
trough begins to push into Wyoming. Hi-Res guidance has stratiform
precipitation moving into the southwest corner of the CWA during the
morning hours with precipitation gradually filling in eastward.
Precipitation coverage will be greater than Saturday, with some
locations likely picking up some decent rainfall amounts. However,
its likely still a bit early to nail down specific rainfall amounts
as synoptic models still show disorganized upper-levels with this
system. This system will become more organized on Monday after it
exits the forecast area.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
Issued at 246 PM MDT Fri Oct 30 2026

On Monday morning, southeast Wyoming and western Nebraska will
sit in-between a surface low to the east in the Great Plains and
an upper-level trough to the west over the northern Rockies.
Despite the presence of nearby systems however, the day will
likely start off mostly dry given a lack of favorable overlap of
lift and moisture directly in our local vicinity. As Monday
progresses, the upper-level trough to the west will swing
eastward, and surface winds will shift out of the north.
Lingering low-level moisture to the northwest of the surface low
looks to get wrapped around the trough as it departs,
increasing the chances of showers and possibly some snow showers
to east-central Wyoming and potentially the NE panhandle.
Ensemble QPF totals with the backside of this system on Monday
afternoon/night still remain rather low and dispersive, similar
to overnight guidance. Overall, it looks like only a tenth of an
inch or so of QPF is likely east of I-25 and north of I-80.
Higher amounts are possible in the northern Laramie range where
favorable orographics and snowfall may last a bit longer. The
other big story on Monday and Monday night will be a dramatic
increase in winds on the backside of this system in the wake of
a passing cold front. Ensemble guidance still is in strong
support of winds possibly exceeding 50 mph, even approaching
high wind criteria east of I-25 through the NE panhandle. The
strongest period of high winds appears to be mid to pate
afternoon, potentially over the I-80 corridor, as mixing is
maximized at the time of the passage of the strongest mid-level
jet aloft. The north to north-northwesterly orientation of
surface flow could bring significant crosswind impacts to
travelers along I-80 from the summit eastward through the high
plains during this timeframe.

As the high wind even diminishes on Tuesday morning, dry weather
and above-average temperatures will move in for the remainder of
the week. The synoptic pattern aloft does remain fairly active,
with two weak vort-maxes passing by on Tuesday night and on
Wednesday night. However, both of these systems will be starved
of moisture and bring only occasional increases in mid and
upper-level cloud cover through the area. Forecast confidence
remains relatively high through the end of the week on both
above normal temperatures and drier weather. However, by the end
of the week, attention will turn to a larger system with upper-
level support moving through the southwestern CONUS. Ensemble
guidance is quite dispersive with both the track and the amount
of moisture with this event, but there is a broad consensus that
Wyoming and possibly western Nebraska will see some form of
precipitation from this event given its more favorable storm
track bringing in southerly and southeasterly flow. We will
continue to monitor this system and potential impacts with both
precipitation and winter weather in the high country as we start
the month of November.

&&

.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1152 AM MDT Fri Oct 30 2026

Main aviation impact today will be low stratus in the Nebraska
panhandle. Light southerly winds will keep low-level moisture high,
leading to persistent low stratus throughout the day. MVFR to
IFR CIGs are anticipated for western Nebraska terminals. When
winds become more calm overnight, the ample low-level moisture
will likely lead to the development of fog for most terminals
east of the Laramie Range. Visibility impacts can be expected,
with MVFR to IFR conditions. Low stratus will stick around
through the overnight hours.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.

&&

$$

SHORT TERM...SF
LONG TERM...MAC
AVIATION...SF