Leiter, Wyoming Weather Forecast Discussion

316
FXUS65 KBYZ 271502
AFDBYZ
Area Forecast Discussion
National Weather Service Billings MT
902 AM MDT Sat Sep 27 2025
.KEY MESSAGES...
- Warm and mostly dry conditions through Monday. High temps
  mostly 80s each day.
- Precipitation potential gradually increase next week, starting
  Monday in the west then regionwide Tuesday and Wednesday. Temps
  expected to stay above normal through Wednesday.
&&
.DISCUSSION...
Today through next Friday...
Conditions will remain warm and dry today under upper level
ridging, with highs in the upper 70s to low 80s. Air quality will
gradually improve through the day into Sunday morning as the
wildfire smoke moves out of the region.
On Sunday, upper level flow becomes more southerly, allowing
monsoonal moisture (PWATs 160-180% of normal) to enter over the
west by late Sunday. This will allow weak convection over the
Beartooth/Absaroka mountains during the afternoon and evening
hours Sunday and Monday. Models have continued to trend down on
the precipitation potential and there is currently only a 20-40%
chance of combined more than 0.1" over the Beartooth/Absaroka
mountains and a less than 20% chance over the foothills Sunday and
Monday. During this time, highs are expected to remain in the 80s.
Tuesday into Wednesday will see the ridge breaking down and a
shortwave moving through the flow, bringing gradually cooling
temperatures and a more widespread chance for light precip.
Currently, there is a 20-40% chance of precip Tuesday afternoon
and evening from Miles City west. Outside of the mountains, any
accumulations are expected to remain light, with a less than 20%
chance of more than 0.1". Over the Beartooth/Absarokas, there
remains a 30% chance of more than 0.25" of precip. However, with
the latest model runs, temperatures are cooling more slowly and
limiting the potential for snow even over the highest peaks.
Currently, there is a less than 10% chance of at least 1 inch
Tuesday into Wednesday.
Into the end of the week, another disturbance is expected to
impact the region. However, models still disagree on the timing
and magnitude of this system. Temperatures will continue to cool
into the end of the week, with highs near normal, in the 60s to
low 70s, by Friday. Archer
.AVIATION...
Slant range visibility will continue to be reduced due to
regional wildfire smoke, but there should be gradual improvement
over the next 24 hours. Otherwise, VFR will persist through the
period under strong high pressure aloft. JKL
&&
.PRELIMINARY POINT TEMP/POPS...
Tdy Sun     Mon     Tue     Wed     Thu     Fri
-------------------------------------------------------
BIL 081 051/085 055/084 057/082 054/077 051/076 050/068
    0/K 00/K    00/U    11/B    20/U    01/B    43/W
LVM 080 045/083 049/081 051/074 044/072 042/071 040/063
    0/U 00/U    12/W    23/W    31/B    13/W    54/W
HDN 081 047/086 051/085 053/084 051/078 047/078 047/069
    0/K 00/K    00/U    11/B    40/U    01/U    43/W
MLS 081 047/087 054/088 056/086 055/080 052/080 051/071
    0/K 00/U    00/U    00/B    21/U    00/U    32/W
4BQ 081 053/087 055/086 058/084 055/078 052/078 051/071
    0/K 00/U    00/U    00/U    20/U    00/U    22/W
BHK 081 048/088 052/088 055/086 052/080 049/079 048/072
    0/U 00/U    00/B    00/U    10/U    00/U    21/B
SHR 081 048/085 051/084 050/082 047/076 045/077 044/069
    0/K 00/B    00/U    11/B    21/U    01/U    34/W
&&
.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...None.
WY...None.
&&
$$
weather.gov/billings

NWS BYZ Office Area Forecast Discussion