086
FXUS65 KBYZ 272001
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
201 PM MDT MON OCT 27 2025
KEY MESSAGES
- SCATTERED RAIN AND SNOW SHOWERS INTO THIS EVENING. LIGHT SNOW
ACCUMULATIONS OVER THE MOUNTAINS.
- BREEZY WEST TO NORTHWEST WINDS DECREASING INTO THE EVENING.
GUSTS 20 TO 45 MPH, STRONGEST OVER THE FOOTHILLS WEST OF
BILLINGS.
- MOSTLY DRY CONDITIONS RETURN TUESDAY. PERIODS OF WIND THROUGH
THE WEEK, MAINLY WEDNESDAY AND SATURDAY/SUNDAY.
DISCUSSION
THROUGH SUNDAY...
A SHORTWAVE AND ASSOCIATED COLD FRONT PUSHING THROUGH THE REGION
TODAY BROUGHT RAIN/SNOW SHOWERS TO THE LOWER ELEVATIONS, SNOW TO
THE MOUNTAINS, COOLER TEMPERATURES AND BREEZY NORTHWEST WINDS.
SHOWERS WILL BE CAPABLE OF BRIEF REDUCTIONS IN VISIBILITY, BUT FOR
THE MOST PART, LITTLE IN THE WAY OF SNOW ACCUMULATIONS IS EXPECTED
FOR THE LOWER ELEVATIONS. AS THE WAVE CONTINUES TO SLIDE EAST
TONIGHT, EXPECT THE ISOLATED TO SCATTERED SHOWERS (15-30% CHANCE)
TO GRADUALLY DIMINISH, WITH SOME LINGERING FLURRIES POSSIBLE
OVERNIGHT. WINDS WILL GRADUALLY DECREASE OVERNIGHT AS WELL. A COOL
NIGHT IS ON TAP WITH TEMPERATURES DOWN INTO THE 20S TO LOWER 30S.
MAINLY DRY, BUT COOL CONDITIONS CAN BE EXPECTED FOR TUESDAY AS AN
UPPER TROUGH DIGS TO THE EAST INTO THE CENTRAL US, PUTTING THE
REGION UNDER NW FLOW. TEMPERATURES IN THE 40S CAN BE EXPECTED FOR
MOST AREAS. BY LATE TUESDAY INTO WEDNESDAY, RIDGING BUILDS BACK
OVER THE REGION BRINGING SLIGHTLY WARMER CONDITIONS (HIGHS IN THE
50S). A SHORTWAVE CUTTING ACROSS SOUTHERN CANADA WILL DRAG AN
ASSOCIATED COLD FRONT THROUGH THE AREA WEDNESDAY EVENING/NIGHT
BRINGING VERY LOW CHANCES (15% OR LESS) FOR PRECIPITATION AND
NORTHWEST WINDS. AS THE SHORTWAVE WRAPS UP INTO AN UPPER LOW OVER
THE NORTHERN PLAINS, PRESSURE GRADIENTS LOOK TO TIGHTEN OVER
EASTERN MT, BRINGING BREEZY NW WINDS. WARMER AND DRIER CONDITIONS
LOOK TO RETURN FRIDAY INTO SATURDAY AS RIDGING BUILDS OVER THE
REGION. ALTHOUGH THERE IS UNCERTAINTY IN THE OVERALL FLOW,
ENSEMBLES CONTINUE TO POINT TO A POTENTIAL WEATHER SYSTEM MOVING
INTO THE REGION BY SUNDAY. ALONG WITH PRECIPITATION CHANCES, THE
SYSTEM COULD BRING A WINDY PERIOD. THINGS TO WATCH IN THE COMING
DAYS. STP
AVIATION
ISOLATED TO SCATTERED SHOWERS, MAINLY RAIN OVER THE LOWER
ELEVATIONS, WITH SNOW OVER THE MOUNTAINS, ARE EXPECTED THROUGH
THE AFTERNOON HOURS. THE HIGHEST CHANCES FOR THE SHOWERS WILL BE
AT KLVM AND KSHR, WHERE BRIEF MVFR TO IFR CONDITIONS ARE
POSSIBLE. VFR CONDITIONS WILL THEN RETURN AFTER 01Z THIS EVENING.
LOOK FOR GUSTY NORTHWEST WINDS OF 25 TO 35 KTS THIS AFTERNOON,
TAPERING OFF IN THE EVENING. LLWS IS POSSIBLE AT KSHR AND KMLS
TONIGHT, MAINLY AFTER 04Z, AS WINDS AT 2KFT INCREASE OUT OF THE
NORTHWEST TO AROUND 40 KTS. THE LLWS IS EXPECTED TO SUBSIDE BY
14Z.
PRELIMINARY POINT TEMP/POPS
TUE WED THU FRI SAT SUN MON
-----------------------------------------------------------
BIL 029/049 028/059 032/053 029/052 038/061 044/056 032/050
20/U 00/B 00/U 00/B 12/W 32/W 11/B
LVM 022/046 026/060 025/053 027/056 037/060 039/055 027/051
20/U 00/B 00/U 00/B 23/W 42/W 11/B
HDN 027/049 023/058 028/053 025/051 033/061 041/056 029/051
20/U 00/B 00/U 00/B 23/W 43/W 21/B
MLS 031/050 026/056 033/053 027/047 032/059 041/056 031/050
11/M 00/B 00/U 00/B 12/W 32/W 10/B
4BQ 031/046 025/054 033/051 028/048 030/058 041/054 032/050
21/M 00/B 00/U 00/B 12/W 32/W 10/U
BHK 027/048 021/053 030/051 023/045 024/056 034/054 027/051
11/M 00/B 00/N 00/B 12/W 31/N 10/U
SHR 022/045 018/059 026/050 024/051 029/061 036/054 025/049
20/U 00/B 00/U 00/B 12/W 33/W 11/B
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING
FOR ZONE 198.
WEATHER.GOV/BILLINGS
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