<pre>080
FXUS65 KBYZ 041831
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT
1231 PM MDT Mon May 4 2026

.KEY MESSAGES...

- Cold front brings cooler temperatures, breezy north winds and
  scattered showers today.

- Cool temperatures continue through Tuesday (highs upper 40s to
  mid 50s). Low temperatures tonight and Tuesday night in the
  upper 20s to middle 30s.

- Light snow accumulations in the mountains through Tuesday. Rain/snow
  mix possible (moderate chance) over the foothills and higher
  hills tonight into Tuesday.

&&

.DISCUSSION...

Today through Sunday...

A low pressure system in south central Canada is allowing for
northwesterly flow over the region, bringing waves of energy with
it. As a result, behind the frontal passage last night, scattered
showers have moved into the area. Precipitation across the lower
elevations is expected to be minimal, with amounts having trended
up in the Beartooth/Absaroka mountains. The high resolution
ensemble (HREF) is showing a spread of 0.6 to 1 inches of liquid
in the highest north facing slopes through Tuesday night,
resulting in around 8-10 inches in the forecast. Use caution and
plan ahead if you have recreation plans in the high country.
Breezy conditions will continue for areas south of Billings as
well as southeast MT with north wind gusts from 20-35 mph.
Additional isolated to scattered showers will be possible again
Tuesday as another northerly push of mid level energy moves
through. Again not expecting much in the way of accumulation with
likely less than and tenth of an inch for lower elevations.
Locations across the foothills southwest of Billings will likely
see a rain/snow mix and possible transition to all snow. Model
soundings show a transition to snow overnight with agreement on
northerly low levels winds for upsloping, but some are signaling
shallow moisture, so the best accumulations will be in the higher
elevations. These areas remain at about a 30% chance for at least
an inch of snow through Tuesday night. Looking forward into
Thursday and late Friday into Saturday, ensembles are signaling
additional waves with some weak afternoon instability Thursday
through Saturday. With this, small chances (15-25%) for a
thunderstorm is in the forecast for these days.

Morning low temperatures Tuesday and Wednesday will be in the mid
20s to mid 35s across the region. Take the necessary precautions
to protect any temperature sensitive plants. Highs this week will
be in the 40s/50s Tuesday, warming through the week into the 60s
and low 70s by the weekend. TS


.AVIATION...

18z Discussion...Brisk northwesterly to northeasterly winds with
gusts mainly in the teens and 20s knots will impact the region
today. With this, light rain and snow showers will sink south
through the area into tonight. While VFR conditions will prevail
over much of the area, there is a moderate to high chance of
seeing MVFR to brief IFR conditions is this evening into tonight
over the north facing slopes of the mountains in southern Montana
and northern Wyoming (Chance of MVFR or lower conditions is 80
percent at KRED, 60 percent at KLVM, and 40 percent at KSHR). The
mountains will also become obscured in rain/snow showers this
evening into tonight.

Another round of scattered rain and snow showers under scattered
to broken low to mid-level clouds is forecast Tuesday. With this,
occasional MVFR conditions are possible (moderate chance). Arends

&&

.PRELIMINARY POINT TEMP/POPS...

    Tue     Wed     Thu     Fri     Sat     Sun     Mon
-----------------------------------------------------------
BIL 035/051 030/063 044/069 045/070 048/065 044/069 046/078
    24/W    10/U    17/T    31/B    25/T    32/T    01/B
LVM 032/049 025/062 042/069 043/070 043/060 039/069 044/076
    36/T    20/U    17/T    21/E    25/W    31/B    01/B
HDN 032/052 028/062 038/069 042/071 046/067 041/070 042/078
    14/W    00/U    17/T    42/W    35/T    42/W    11/B
MLS 032/050 026/058 034/067 041/070 047/068 041/069 043/076
    12/W    00/U    03/W    21/U    24/W    21/B    11/B
4BQ 032/049 027/056 034/065 041/068 045/065 041/066 042/074
    12/W    00/U    03/W    31/B    24/T    31/B    10/U
BHK 027/047 023/054 029/063 036/069 041/066 036/065 039/071
    12/J    00/U    01/B    20/U    13/W    21/B    11/B
SHR 029/047 023/055 033/065 039/066 042/061 038/064 039/072
    35/W    21/U    07/T    42/T    36/T    43/T    11/U

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...None.
WY...None.

&&

$$
weather.gov/billings</pre>