040
FXUS65 KBYZ 151449
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
849 AM MDT MON JUN 15 2026
KEY MESSAGES
- WARMING AND MOSTLY DRY CONDITIONS THROUGH TUESDAY. ISOLATED LOW
SHOWERS, MAINLY EAST OF ROSEBUD COUNTY.
- WINDY CONDITIONS LATE TUESDAY THROUGH WEDNESDAY.
- COLD FRONT BRINGS A COOL DOWN AND LOW TO MODERATE CHANCE OF
SHOWERS/THUNDERSTORMS WEDNESDAY, MAINLY FOR EAST CENTRAL AND
SOUTHEAST MONTANA.
DISCUSSION
THROUGH SUNDAY...
CONDITIONS WILL CONTINUE TO TREND WARMER AND DRIER INTO TUESDAY,
WITH HIGHS TODAY IN THE 70S TO LOW 80S, INCREASING TO 80S TO NEAR
90 TUESDAY. OCCASIONAL WEAK WAVES IN THE FLOW WILL BRING LOW
CHANCES (10-30%) FOR SHOWERS AND WEAK THUNDERSTORMS INTO TUESDAY.
WINDS WILL BE BREEZY OVER THE EAST TODAY, WITH GUSTS OF 20 TO 40
MPH THROUGH THE AFTERNOON. AHEAD OF A STRONGER SHORTWAVE DROPPING
THROUGH THE REGION LATE TUESDAY INTO WEDNESDAY, WINDS WILL
INCREASE OVER THE FOOTHILLS TUESDAY AFTERNOON WITH A MODERATE
CHANCE FOR A GUST GREATER THAN 50 MPH. INTO WEDNESDAY, BREEZY
NORTHWEST WINDS OF 30 TO 50 MPH WILL SPREAD ACROSS THE REGION,
HIGHEST OVER THE EAST, AS THE WAVE AND AN ASSOCIATED COLD FRONT
MOVE THROUGH. TEMPERATURES WILL BE COOLER WEDNESDAY BEHIND THE
FRONT, WITH HIGHS IN THE UPPER 60S TO MID 70S.
WITH THE STRONGER WAVE LATE TUESDAY INTO WEDNESDAY, BETTER
POTENTIAL FOR SHOWERS AND THUNDERSTORMS (20-60% CHANCE) ARRIVES,
MAINLY FOR NORTHERN AND EASTERN AREAS. THROUGH THE END OF THE WORK
WEEK, OCCASIONAL PIECES OF ENERGY WILL CONTINUE TO MOVE THROUGH
THE UPPER LEVEL NORTHWEST FLOW, ALLOWING ISOLATED
AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS TO CONTINUE (20% OR
LESS CHANCE). HIGHS WILL GENERALLY STAY IN THE 70S TO LOW 80S FOR
THE LATER HALF OF THE WEEK.
ENSEMBLES CONTINUE TO INDICATE UPPER TROUGHING WILL MOVE ONTO THE
WEST COAST FRIDAY INTO SATURDAY, WITH SOUTHWEST FLOW DEVELOPING
OVER THE NORTHERN ROCKIES. THIS WOULD BRING A BETTER POTENTIAL FOR
DAILY THUNDERSTORMS OVER THE WEEKEND, WITH SHORTWAVES LIFTING
INTO THE REGION AND PLAINS MOISTURE ADVECTING INTO THE AREA.
ARCHER
AVIATION
ISSUED 1445Z. VFR CONDITIONS WILL PREVAIL TODAY & TONIGHT UNDER
NW FLOW ALOFT. EXPECT ISOLATED SHOWERS MAINLY EAST OF KBIL TODAY,
THEN ANOTHER ROUND OF POTENTIAL LIGHT SHOWERS IN THIS SAME AREA
TONIGHT (K1S3-KMLS-KBHK-K97M MAY BE IMPACTED). LOCAL MVFR IS
POSSIBLE WITH THIS ACTIVITY. NW WINDS WILL GUST 25-35KTS NEAR THE
DAKOTAS BORDER TODAY. JKL
PRELIMINARY POINT TEMP/POPS
TDY TUE WED THU FRI SAT SUN
-------------------------------------------------------
BIL 079 055/088 060/075 050/077 052/081 057/078 055/076
2/W 00/N 01/N 00/U 00/B 02/T 43/T
LVM 078 048/083 053/074 043/077 045/081 049/074 047/074
0/B 00/N 00/N 10/U 00/B 15/T 55/T
HDN 078 050/088 056/074 047/075 048/082 054/080 053/076
2/W 10/N 12/W 00/U 00/B 03/T 44/T
MLS 077 052/086 056/071 048/073 048/078 053/079 053/073
2/W 00/B 33/W 11/U 00/B 01/B 43/T
4BQ 075 050/085 057/070 048/072 048/079 054/079 053/072
2/W 01/B 23/W 01/U 00/B 13/T 55/T
BHK 074 045/081 050/067 043/069 043/075 047/076 048/071
3/T 01/E 55/T 22/T 10/U 01/B 34/T
SHR 074 046/083 053/070 044/072 044/081 049/077 048/072
1/N 00/B 11/N 01/U 00/B 16/T 78/T
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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