040
FXUS65 KBYZ 300824
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
224 AM MDT THU OCT 30 2025
KEY MESSAGES
- WINDY CONDITIONS OVER EASTERN MONTANA AND NORTHERN WYOMING
TODAY. NORTHWESTERLY WIND GUSTS IN THE 20S TO 40S MPH.
- COOL AND DRY CONDITIONS FOR HALLOWEEN.
- WINDY CONDITIONS RETURN THIS WEEKEND. FIRST TO THE COMMON GAP
WIND AREAS AROUND LIVINGSTON TO NYE ON SATURDAY, THEN TO THE
REST OF THE AREA ON SUNDAY.
DISCUSSION
TODAY THROUGH WEDNESDAY...
TODAY WILL BE DRY WITH TEMPERATURES IN THE UPPER 40S TO MID 50S
UNDER CLEAR TO MOSTLY CLEAR SKIES. OVER EASTERN MONTANA AND
NORTHERN WYOMING, EAST OF THE BIGHORN MOUNTAINS, WINDY CONDITIONS
WILL EXIST AS A SURFACE PRESSURE GRADIENT STRENGTHS FROM AN UPPER
LOW PRESSURE SYSTEM TO THE EAST. WITH THIS, LOOK FOR NORTHWESTERLY
WIND GUSTS TO BE IN THE 20S AND 30S (MPH), WITH A FEW GUSTS INTO
THE 40S (MPH) DURING THE AFTERNOON AND EARLY EVENING OVER FAR
EASTERN MONTANA. WHILE NON-ZERO, THE CHANCE OF SEEING A 50 MPH
WIND GUST IN FAR EASTERN MONTANA REMAINS LOW. BY THIS EVENING INTO
TONIGHT, WINDS ACROSS THE AREA WILL SUBSIDE. ALONG WITH THE
WINDS, THE UPPER LEVEL LOW PRESSURE SYSTEM TO OUR EAST WILL USHER
IN COOLER TEMPERATURES ACROSS THE REGION LATE TODAY INTO FRIDAY.
WITH THIS, TEMPERATURES TONIGHT INTO FRIDAY MORNING ARE FORECAST
TO DROP INTO THE 20S ACROSS MUCH OF THE AREA.
FRIDAY, HALLOWEEN, WILL BE A COOL AND DRY DAY WITH HIGH
TEMPERATURES IN THE MID 40S AND 50S OVER SOUTH-CENTRAL MONTANA AND
NORTHERN-CENTRAL WYOMING, AND IN THE UPPER 30S TO LOWER 40S OVER
FAR EASTERN MONTANA. TEMPERATURES FRIDAY EVENING, AROUND TRICK-
OR-TREATING TIME, LOOK TO BE IN THE 30S AND 40S ACROSS MUCH OF THE
AREA, WITH TEMPERATURES LIKELY DROPPING BELOW FREEZING BY 9PM
OVER PORTIONS OF EASTERN MONTANA AND NORTHERN WYOMING.
SATURDAY LOOKS TO BE ANOTHER DRY DAY AS TEMPERATURES WARM BACK UP
INTO THE 50S AND 60S UNDER A RIDGE OF HIGH PRESSURE ALOFT. WHILE
MODEST GAP WINDS MAY DEVELOP AROUND THE LIVINGSTON TO NYE AREA
EARLY SATURDAY MORNING, THE BEST SIGNAL FOR STRONG GAP WINDS
RETURNS SATURDAY EVENING INTO SUNDAY MORNING AHEAD OF SUNDAY COLD
FRONT PASSAGE. AT THIS TIME, INTERNAL GUIDANCE SUGGESTS WIND GUSTS
OF 40 TO 50 MPH ARE LIKELY. AS FAR AS 60 MPH WIND GUSTS GO, THE
CHANCE REMAINS MODERATE. SUNDAY, THE AFOREMENTIONED COLD FRONT IS
EXPECTED TO MOVE THROUGH THE REGION AND BRING GUSTY WINDS TO THE
AREA, STRONGEST OVER THE FOOTHILLS WEST OF BILLINGS. THIS FRONT
MAY ALSO BRING LIGHT PRECIPITATION BACK INTO THE AREA, BUT CHANCES
OF MEASURABLE PRECIPITATION REMAIN LOW AT THIS TIME (15 TO 30
PERCENT OVER SOUTH-CENTRAL MONTANA, GREATEST OVER THE MOUNTAINS).
WITH THIS, SNOW LEVELS LOOK TO BE AROUND 8,000 FEET, SO
PRECIPITATION WOULD BE RAIN OVER THE LOWER ELEVATIONS.
MONDAY INTO THE MIDDLE OF NEXT WEEK, ENSEMBLES MAINLY AGREE ON AN
UPPER LEVEL RIDGE NUDGING INTO THE AREA, THOUGH THERE IS
UNCERTAINTY ON THE AMPLITUDE OF THIS RIDGE. THIS PLAYS A ROLE IN
THE WIND FORECAST AS A STRONGER RIDGE COULD MEAN LESS WIND AS THE
STRONGER WINDS ALOFT WOULD BE SHIFTED MORE TO THE NORTH OF OUR
AREA, WHILE A WEAKER RIDGE COULD MEAN MORE WIND AS THE STRONGER
WINDS ALOFT WOULD BE MORE OVER OUR AREA. EITHER WAY, DRY
CONDITIONS WITH NEAR TO SLIGHTLY ABOVE NORMAL TEMPERATURES ARE
FAVORED MONDAY INTO THE MIDDLE OF NEXT WEEK UNDER THE UPPER LEVEL
RIDGING. ARENDS
AVIATION
WINDS WILL CONTINUE TO GRADUALLY DECREASE EARLY THIS MORNING.
BREEZY NW WINDS WILL INCREASE AFTER 15Z, WITH GUSTS 25-35 KTS
EXPECTED OVER EASTERN MT, INCLUDING KMLS AND KBHK, INTO THE
EVENING. ARCHER
PRELIMINARY POINT TEMP/POPS
TDY FRI SAT SUN MON TUE WED
-------------------------------------------------------
BIL 053 029/049 031/064 045/062 035/055 035/063 039/062
0/U 00/U 00/B 12/W 11/B 11/B 10/B
LVM 051 026/056 032/065 043/062 032/057 037/063 039/063
0/U 00/U 00/N 12/W 11/B 21/B 10/B
HDN 053 024/048 026/065 039/062 034/056 032/061 035/063
0/U 00/U 00/B 12/W 10/B 11/B 10/B
MLS 053 024/044 024/061 042/061 032/055 033/059 037/059
0/N 00/U 00/B 01/B 00/U 10/B 10/B
4BQ 050 026/043 024/061 041/062 035/055 035/061 038/061
0/U 00/U 00/B 01/B 00/U 00/B 00/B
BHK 050 021/040 018/058 038/061 029/055 030/058 034/059
0/N 00/B 00/B 00/N 00/U 10/B 00/B
SHR 050 022/047 023/066 038/064 030/056 033/064 034/062
0/N 00/U 00/B 01/U 10/U 10/B 10/B
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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