177
FXUS65 KBYZ 091222
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT
522 AM MST Sun Nov 9 2025

.KEY MESSAGES...

- Strong temperature gradient today with cool temperatures in the
  30s F in the east and 50s F in the west.

- Above average temperatures return Monday lasting through
  Thursday. Gusty foothills winds Monday and Tuesday.

- Potential shift to cooler and wetter conditions starting Friday.

&&

.DISCUSSION...
Through Saturday...

Today will see high temperatures in the 30s F near the Dakotas
border with temperatures increasing to the west with 50s F
expected for locations west of Billings. Upper level ridging
works into the region starting Monday and lasting through
Thursday. This will lead to above average temperatures in the 50s
and 60s F. An increasing Idaho Falls to Lewistown pressure
gradient (near 15 mb) Monday through Tuesday will bring windy
conditions to gap wind areas such as Livingston and Nye. Winds are
expected to gust into the 40s and 50s mph with the strongest
winds Monday evening through Tuesday morning. A weak cold front
moves through Tuesday reducing the gradient and weakening winds.
The chance for a wind gust over 60 mph remains below 40% at this
time. Other foothills locations such as Big Timber and Harlowtown
will experience wind gusts in the 40s mph during this time due to
strong 700 mb winds around 50 kts.

There is increasing confidence in upper level troughing beginning
to impact the region starting Friday bringing a pattern change to
cooler and wetter conditions. Little more can be said at this time
due to high uncertainty. Torgerson

.AVIATION...

Updated at 12z.

Low stratus (w/ MVFR ceilings) east of Forsyth/Broadus will linger
beyond sunrise, affecting KMLS/KBHK/K97M until 16-18z. There is
also a low risk (20%) of valley fog in an area west of the stratus
and east of KBIL, and this will need to be monitored for potential
visibility reductions to IFR or lower. Impacts from stratus & fog
should end by 18z, and VFR will prevail through tonight under
building high pressure aloft. Downslope winds will begin to
increase along the western foothills tonight, with gusts of 25-35
knots after 06z. JKL

&&

.PRELIMINARY POINT TEMP/POPS...

    Tdy Mon     Tue     Wed     Thu     Fri     Sat
-------------------------------------------------------
BIL 051 036/062 042/064 035/058 040/066 042/059 034/050
    0/U 00/B    00/U    00/B    00/B    12/W    21/B
LVM 057 037/063 041/060 035/062 039/065 040/054 028/046
    0/U 00/N    00/N    00/B    00/U    34/W    32/J
HDN 051 029/066 041/064 031/058 034/066 038/060 032/051
    0/B 00/B    00/U    00/B    00/B    12/W    42/W
MLS 042 027/064 041/060 029/056 033/063 036/059 033/051
    0/B 00/B    00/U    00/B    00/B    01/B    21/B
4BQ 042 028/065 042/058 032/057 036/065 040/063 035/050
    0/B 00/B    00/U    00/B    00/U    01/B    21/B
BHK 036 020/059 035/056 026/054 030/063 035/061 030/049
    0/B 00/B    00/U    00/B    00/B    00/B    21/B
SHR 049 027/069 036/061 030/059 034/066 037/062 027/048
    0/B 00/B    00/U    00/B    00/U    02/W    32/W

&&

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

&&

$$
weather.gov/billings