823
FXUS65 KBOI 120559
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
1159 PM MDT THU JUN 11 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- CLEAR, WARMER, AND DRIER THROUGH THE FORECAST.
- BREEZY CONDITIONS TOMORROW THROUGH SATURDAY.
SHORT TERM /THROUGH SATURDAY NIGHT/
ISSUED 232 PM MDT THU JUN 11 2026
PACIFIC HIGH PRESSURE BUILDS AS A GREAT LAKES TROUGH REMAINS IN
PLACE. THESE TWO SYNOPTIC FEATURES KEEP US IN A TIGHT PRESSURE
GRADIENT AS HIGH PRESSURE BUILDS IN. THIS MEANS WINDY
AFTERNOONS, ESPECIALLY FRIDAY AND SATURDAY, AND A STEADILY
WARMING AND DRYING TREND WITH CLEAR SKIES. FRIDAY WILL BE 5
DEGREES WARMER THAN TODAY, AND SATURDAY IS FORECAST TO BE ABOUT
THE SAME AS FRIDAY. A SHORT WAVE EMBEDDED IN THE FLOW BRINGS
INCREASED WINDS FRIDAY LINGERING INTO SATURDAY. WIND GUSTS OF
25-35 MPH CAN BE EXPECTED IN OPEN AREAS, HIGHLANDS, AND
RIDGETOPS REMAINING ELEVATED OVERNIGHT INTO SATURDAY WHERE THEY
COME DOWN TO 20-30 MPH. WINDS WEAKEN HEADING INTO THE LONG TERM
AS THE WARMING AND DRYING CONTINUES.
LONG TERM /SUNDAY THROUGH THURSDAY/
ISSUED 232 PM MDT THU JUN 11 2026
HEAT WILL CONTINUE TO BUILD ACROSS THE REGION AS AN UPPER RIDGE
MOVES IN FROM THE COAST EARLY NEXT WEEK. THE AREA REMAINS DRY
DURING THIS TIME AS NORTHWEST FLOW ALOFT KEEPS MONSOON MOISTURE
LOCKED UP OVER THE FOUR CORNERS AREA. HIGH TEMPERATURES WILL
REACH 10-15 DEGREES ABOVE NORMAL BY TUESDAY, STAYING IN THAT
RANGE THROUGH THURSDAY. LOWER ELEVATIONS WILL SEE HIGHS IN THE
LOW-MID 90S STARTING ON MONDAY. TUESDAY IS FORECAST TO BE THE
HOTTEST DAY, WITH WEDNESDAY ONLY A DEGREE OR TWO LOWER. FOR
TYPICALLY HOTTER SITES IN THE SNAKE PLAIN THE PROBABILITY OF 100
OR GREATER IS 10% OR LESS TUE/WED, WHILE THE CHANCE OF REACHING
95 HAS BUMPED UP TO 50-80%. MODELS CONTINUE TO SHOW A TROUGH
APPROACHING THE PAC NW LATE NEXT WEEK.
AVIATION /06Z FRIDAY THROUGH SATURDAY/
ISSUED 1118 PM MDT THU JUN 11 2026
VFR AND MOSTLY CLEAR. SURFACE WINDS: VARIABLE UP TO 10 KT THROUGH
FRIDAY MORNING, THEN NW 10-20 KT WITH GUSTS TO 20-35 KT BY FRIDAY
MID-AFTERNOON THROUGH NIGHT. WINDS ALOFT AT 10KFT MSL: WEST TO
NORTHWEST 10-20 KT.
KBOI...VFR AND CLEAR. SURFACE WINDS: VARIABLE OR SE 3-6 KT
OVERNIGHT. RETURNING NW AROUND FRI/16Z, INCREASING TO 8-15 KT WITH
GUSTS TO 20-25 KT IN THE AFTERNOON.
WEEKEND OUTLOOK...VFR AND MOSTLY CLEAR, EXCEPT A FEW AFTERNOON
MOUNTAIN CUMULUS. SURFACE WINDS: NW-NE 10-20 KT WITH PM GUSTS TO 20-
30 KT SATURDAY, THEN W-NW 5-15 KT WITH PM GUSTS AROUND 20 KT
SUNDAY.
BOI WATCHES/WARNINGS/ADVISORIES
ID...NONE.
OR...NONE.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
AVIATION.....JDS
SHORT TERM...JM
LONG TERM....DG
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page