388
FXUS65 KBYZ 040220
AFDBYZ

Area Forecast Discussion...Updated
National Weather Service Billings MT
720 PM MST Tue Nov 3 2026

.KEY MESSAGES...

- Patchy fog over the plains may bring reductions to visibility
  tonight into Wednesday morning.

- Mainly dry with temperatures trending warmer into the weekend.

- Periods of windy conditions look to develop over the mountains
  and foothills of south-central Montana Friday into Sunday.

&&

.UPDATE...

Dry conditions under mostly clear to clear skies will exist
tonight as temperatures cool into the 20s and 30s (F). The
combination of these cool temperatures, clear skies, and light
winds may allow patchy fog to develop over the plains of eastern
Montana and north-central Wyoming late tonight into early
Wednesday morning. While the latest high resolution models have
backed off on the potential fog extent a bit, the risk of fog
remains greatest (20 percent chance) along creek and river
valleys. Expect any fog that does develop to dissipate through the
morning hours on Wednesday, giving way to a seasonable day with
high temperatures in the 40s and 50s (F) under sunny to mostly
sunny skies. LA

&&

.DISCUSSION...

Rest of Today through Monday...

Patchy fog may develop tonight through Wednesday morning, with
lighter winds across southern Montana and northern Wyoming. The
best chance for fog development exists around and east of
Billings. Use caution during the Wednesday morning commute as
reductions to visibility could impact travel.

Weak ridging will build over the Northern Rockies through midweek.
Temperatures will be in the 40s to 50sF today and Wednesday,
before increasing further into the 50s and low 60sF Thursday and
Friday. The chance for precipitation is very low (less than 10%)
across the lower elevations through the weekend. Ensembles do show
a shortwave trough moving across the area on Friday. This wave
does not look to bring much precipitation aside from isolated
showers in the mountains.

The most impactful weather in the forecast period will be Friday
and through Sunday, when models are depicting an increasing
pressure gradient developing over the Paradise Valley. While the
gradient orientation is not the perfect setup for gap winds in the
Livingston and Nye areas, there is currently a moderate chance
(40 to 60%)for wind gusts of 50 mph or higher Friday and Saturday
night. Breezy conditions may also impact the US-191 corridor from
Big Timber through Harlowton, with winds gusting in the range of
25 to 40 mph.

Matos

.AVIATION...

Patchy fog is forecast tonight into early Wednesday morning over
portions of eastern Montana and north-central Wyoming. With this,
impacts to KBIL, KSHR, and KMLS cannot be ruled out, though
confidence is low at KBIL and KSHR and moderate at KMLS. Any
patchy fog that does develop will dissipate after sunrise.
Otherwise, VFR conditions will prevail through the forecast
period. LA

&&

.PRELIMINARY POINT TEMP/POPS...

    Wed     Thu     Fri     Sat     Sun     Mon     Tue
-----------------------------------------------------------
BIL 032/052 033/057 033/056 039/060 039/065 040/058 039/061
    00/U    00/U    00/U    00/U    00/B    00/B    00/B
LVM 027/054 027/055 027/055 030/059 034/065 034/060 034/061
    00/B    00/U    10/U    10/U    00/N    00/B    00/B
HDN 027/051 027/055 031/057 033/061 031/067 035/059 033/063
    00/U    00/U    00/U    10/U    00/U    00/B    00/B
MLS 028/050 030/052 033/054 035/057 033/063 039/057 035/060
    00/B    00/B    00/U    10/U    00/U    00/U    00/B
4BQ 027/053 028/058 033/056 035/059 034/066 039/059 036/063
    00/U    00/U    00/U    10/U    00/U    00/U    00/B
BHK 024/052 026/056 029/054 032/056 031/065 036/057 032/060
    00/B    00/B    00/U    10/U    00/U    00/U    00/B
SHR 025/055 025/058 029/056 028/061 030/069 035/060 032/064
    00/U    00/U    00/U    10/U    00/U    00/U    00/B

&&

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

&&

$$
weather.gov/billings