Lockwood, Montana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

133
FXUS65 KBYZ 270822
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT
222 AM MDT Fri Jun 27 2025

.KEY MESSAGES...

- Chance of late day showers or storms over portions of the region
  through Saturday.

- Turning mostly dry Sunday and Monday.

- Turning warmer Monday/Tuesday with highs mid 80s to mid 90s.

- Chance of thunderstorms increases again toward middle of next
  week.


&&

.DISCUSSION...
Today through Saturday Night...

Mid level SW flow will again be over our region today with models
hinting at weak impulses moving through this flow. Moderate
instability from surface heating combined with modest low level
moisture should result in isolated to scattered convection as
impulses move out from the mountains. CAMs suggest initiation over
central Montana will develop around midday and push E/NE over the
CWA through the afternoon. Average CAPE values range from about
400-800 J/kg in the afternoon with effective shear over 40 kts
for much of the area, but helicity values are modest. Hodographs
and soundings suggest wind producing cells are likely from the
central zones to the east with a slight risk of a large hail
threat due to decent shear...similar to yesterday. Most of the
activity will gradually diminish after sunset, but CAMs do hint of
some weaker activity lingering overnight in east central Montana.

Saturday...Low amplitude trough will move across southern Canada
Friday night into Saturday. This will send a weak front across our
area with a more stable air mass setting up over much of east
central Montana. Ingredients for deep convection will be pushed to
the south and east. We should see any shower or thunderstorm
activity limited to the mountains along the MT/WY border and into
the SE corner of Montana lingering into Saturday evening.

Highs today will be a touch cooler than yesterday in the 80s.
Highs Saturday a touch cooler still with upper 70s in the west to
lower/mid 80s elsewhere. Overnight lows will be mainly in the 50s.
BT


Sunday through Thursday...

Outside of the far east where showers and thunderstorms are
possible (15-30%), most of the area looks to remain dry on Sunday
as ridging begins building in from the west. Ensembles remain in
good agreement in ridging over the area Monday into the first part
of Tuesday, bringing warmer and drier conditions.

Troughing moving inland along the West Coast and ridging over the
Northern Rockies into the Plains will put the area back into an
active weather pattern. Disturbances are progged to lift into the
region from the SW and W, with persistent southeast flow at the
surface bringing moisture and instability into the area. Scattered
to numerous showers and thunderstorms (30-60%) return to the
forecast Tuesday afternoon, continuing through the week. With
Precipitable Water (PWAT) values and instability increasing, there
is the potential for strong thunderstorms and heavy rain.

High temperatures are forecast to range from the 70s to 80s
Sunday, warming into the 80s to lower 90s Monday into Wednesday
as ridging builds over the region. A more active weather pattern
will allow for temperatures to dip a few degrees Thursday, with
highs in the upper 70s to 80s. STP


&&

.AVIATION...

Patchy fog is possible along some of the river valleys of SE MT
late tonight into the morning hours producing localized
reductions. Otherwise, VFR is expected to prevail. A disturbance
lifting through the region will bring isolated to scattered
showers and thunderstorms today, spreading from west to east
during the afternoon and evening hours. Local MVFR conditions and
wind gusts to 40 kts are possible with the strongest convection.
STP
&&

.PRELIMINARY POINT TEMP/POPS...

    Tdy Sat     Sun     Mon     Tue     Wed     Thu
-------------------------------------------------------
BIL 086 058/082 057/082 057/088 060/092 063/088 061/086
    3/T 31/U    10/U    00/U    01/U    22/T    33/T
LVM 083 049/082 048/080 048/086 053/088 056/085 053/083
    3/T 21/U    10/U    00/U    01/U    34/T    44/T
HDN 087 058/084 056/083 055/089 059/094 061/090 060/087
    1/B 41/U    20/U    00/U    11/U    22/T    33/T
MLS 089 062/085 059/084 057/087 061/094 064/091 062/087
    0/B 41/B    10/U    00/U    10/U    22/T    33/T
4BQ 087 062/083 059/081 057/085 060/091 063/089 062/084
    0/U 20/U    31/U    00/U    11/U    22/T    33/T
BHK 087 059/083 054/080 052/083 054/087 059/085 059/082
    1/B 32/T    10/U    00/U    10/U    22/T    33/T
SHR 086 054/081 052/079 051/085 056/090 057/086 055/083
    1/B 11/U    22/T    01/U    11/U    23/T    34/T

&&

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

&&

$$
weather.gov/billings