228
FXUS65 KBOI 040636
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
1236 AM MDT SAT JUL 4 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- HOT WEATHER EXPECTED THROUGH INDEPENDENCE DAY HOLIDAY
WEEKEND.
- SLIGHT CHANCE OF THUNDERSTORMS OVER CENTRAL ID MOUNTAINS AND
SOUTH-CENTRAL OR SUNDAY AFTERNOON, WITH CHANCES EXPANDING
AREA-WIDE MONDAY.
- HOT AND DRY WEATHER TO CONTINUE THROUGH NEXT WEEK.
SHORT TERM /THROUGH MONDAY NIGHT/
ISSUED 229 PM MDT FRI JUL 3 2026
THE SURFACE AND ALOFT WILL BRING CLEAR SKIES ACROSS THE AREA
TONIGHT AND HOT AND DRY WEATHER ON SATURDAY. THE HOT WEATHER
WILL CONTINUE ON SUNDAY, WITH AFTERNOON TEMPERATURES REACHING
THE MID TO UPPER 90S IN MOST LOWER VALLEY LOCATIONS AND INTO THE
MID-80S IN MOUNTAIN COMMUNITIES. MID-LEVEL MOISTURE WILL BEGIN
TO INCREASE ON SUNDAY AFTERNOON ACROSS EASTERN OREGON BRINGING
ABOUT A 20 PERCENT CHANCE OF ISOLATED THUNDERSTORMS CAPABLE OF
PRODUCING GUSTY WINDS.
LONG TERM /TUESDAY THROUGH SATURDAY/
ISSUED 229 PM MDT FRI JUL 3 2026
THE FOUR CORNERS REGION WITH CONTINUED HOT TEMPERATURES AND
SOUTHWEST FLOW OVER THE AREA. A SHORTWAVE WILL MOVE ACROSS THE
AREA ON MONDAY MORNING AS MONSOONAL MOISTURE INCREASES FROM THE
SOUTH. A 20-40 PERCENT CHANCE OF THUNDERSTORMS ON MONDAY MORNING
INTO THE AFTERNOON AS THIS FEATURE MOVES ACROSS EASTERN OR AND
SOUTHWEST ID. CURRENT FORECAST DOES NOT HAVE THIS HANDLED WELL,
BUT SHOULD COME INTO BETTER AGREEMENT AS THE MESO MODELS COME
INTO FOCUS. RESIDUAL MOISTURE CONTINUES INTO TUESDAY WITH A
CHANCE OF THUNDERSTORMS ON THE IDAHO SIDE. WESTERLY FLOW SHUNTS
THE MOISTURE TO THE EAST ON WEDNESDAY AND THURSDAY WITH DRY AND
BREEZY CONDITIONS AND SLIGHTLY COOLER TEMPERATURES. TEMPERATURES
MONDAY THROUGH WEDNESDAY AROUND 5- 10 DEGREES ABOVE NORMAL
COOLING TO NEAR NORMAL ON THURSDAY AND FRIDAY.
AVIATION /06Z SATURDAY THROUGH SUNDAY/
ISSUED 1221 AM MDT SAT JUL 4 2026
VFR. A FEW CUMULUS OVER THE HIGHER TERRAIN AND ALONG THE NEVADA
BORDER IN THE AFTERNOON AND EVENING, OTHERWISE CLEAR SKIES. HIGH
DENSITY ALTITUDE IN THE AFTERNOON/EVENING DUE TO HEAT. SURFACE
WINDS: VARIABLE 10 KT OR LESS, BECOMING SW-NW 5-15 KT IN THE
AFTERNOON. NW GUSTS 20-30 KT KBKE TO KONO IN THE EVENING. WINDS
ALOFT AT 10KFT MSL: SW 10-20 KT.
KBOI...VFR UNDER CLEAR SKIES. SURFACE WINDS: SE 5-10 KT, THEN
NW 7-12 KT IN THE AFTERNOON.
SUNDAY OUTLOOK...MAINLY VFR. ISOLATED THUNDERSTORMS OVER
SE OREGON AND FAR SW IDAHO LATE AFTERNOON/EVENING. HIGH DENSITY
ALTITUDE IN THE AFTERNOON/EVENING DUE TO HEAT. GUSTY OUTFLOW
WINDS FROM SHOWERS AND THUNDERSTORMS UP TO 50 KT. SURFACE
WINDS: W-NW 5-15 KT. NW GUSTS 20-35 KT KBKE TO KONO IN THE
EVENING.
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.....ST
SHORT TERM...JB
LONG TERM....KA
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