434
FXUS65 KBOI 252031
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
231 PM MDT SAT OCT 25 2025
SHORT TERM...TONIGHT THROUGH MONDAY NIGHT
FRONTAL BAND OF SHOWERS/THUNDERSTORMS WILL QUICKLY MOVE EASTWARD
TONIGHT ACROSS WESTERN/CENTRAL IDAHO, BRINGING STRONG WIND GUSTS
OF 40-50 MPH, WITH SOME LOCALLY STRONGER. IN THE WAKE OF THE
COLD FRONT, SNOW LEVELS WILL DROP TO BELOW 5000 FEET OVERNIGHT,
RESULTING IN LIGHT TO MODERATE SNOW IN THE IDAHO MOUNTAINS. A
STRONG JET ALOFT WILL BE MAINTAINED ACROSS SOUTHERN IDAHO INTO
SUNDAY, AND PROVIDE ENOUGH ASCENT FOR CONTINUED PRECIPITATION
CHANCES EARLY SUNDAY MORNING (30-50%) NEAR THE NEVADA BORDER,
BEFORE MORE WIDESPREAD PRECIPITATION REDEVELOPS LATER SUNDAY
AFTERNOON. SNOW ACCUMULATIONS THROUGH LATE SUNDAY WILL GENERALLY
RANGE BETWEEN 2-8 INCHES ABOVE 5000 FEET IN THE BOISE AND WEST-
CENTRAL MOUNTAINS, WITH LITTLE TO NO ACCUMULATION BETWEEN
4000-5000 FEET. TOTAL QPF AMOUNTS ARE LIKELY TO EXCEED ONE INCH
ACROSS MANY OF THE CENTRAL/WEST-CENTRAL IDAHO MOUNTAINS, AND
GENERALLY RANGE BETWEEN 0.25-0.5 INCH ELSEWHERE. DRIER AND
COOLER CONDITIONS TAKE HOLD ON MONDAY, WITH HIGHS STRUGGLING TO
GET ABOVE 50 DEGREES, AND OVERNIGHT TEMPERATURES CLOSE TO THE
FREEZING MARK IN MANY AREAS. PATCHY OVERNIGHT FOG WILL ALSO BE
POSSIBLE IN THE MOUNTAIN VALLEYS OF IDAHO.
LONG TERM...TUESDAY THROUGH SATURDAY
TUESDAY MORNING WILL START OFF COLD, WITH NEARLY EVERY LOCATION
IN THE AREA AT OR BELOW THE FREEZING MARK FOR LOW TEMPERATURES.
THESE CONDITIONS WILL BE SHORT-LIVED AS A MODEST WARMING TREND
OCCURS MID-WEEK AMIDST BROAD UPPER-LEVEL RIDGING. DRY CONDITIONS
WILL PREVAIL THROUGH MOST OF THE WEEK, WITH EXCEPTION TO A WEAK
SYSTEM PASSING TO THE NORTH ON WEDNESDAY BRINGING A SLIGHT
CHANCE OF PRECIPITATION TO WEST-CENTRAL IDAHO AND NORTHEAST
OREGON. THE SIGNAL IS INCREASING FOR ANOTHER STORM SYSTEM
MOVING IN FROM THE NORTH FRIDAY AND SATURDAY, PRIMARILY
AFFECTING AREAS NORTH OF THE SNAKE PLAIN.
AVIATION
SCATTERED PRECIPITATION THIS AFTERNOON ACROSS ID, WITH
PERSISTENT LOW CLOUDS IN THE MOUNTAINS. MODERATE-HEAVY SHOWERS WITH
EMBEDDED THUNDERSTORMS WILL DEVELOPING IN E OR AND MOVE TO THE SE
THROUGH OUR AREA. STRONG WINDS WITH GUSTS UP TO 50 KT ACCOMPANY THE
LINE AS IT MOVES. SLIGHT CLEARING BEHIND THE LINE THIS EVENING AND
RECENT PRECIP MAY SUPPORT VALLEY FOG/STRATUS IN AREAS WITH LIGHT
WINDS. SURFACE WINDS: S-SW 15-25 KT WITH GUSTS TO 30-50 KT IN
HIGHLANDS AND RIDGES, SE 10-30 KT IN THE SNAKE PLAIN. W-SW 15-25 KT
TONIGHT. WINDS ALOFT AT 10KFT MSL: SW 40-60 KT.
KBOI...A LINE OF STRONG WINDS, MODERATE-HEAVY RAIN SHOWERS WITH
EMBEDDED STORMS MOVES THROUGH THE AREA THIS EVENING. SURFACE WINDS:
SE 13-18 KT WITH GUSTS UP TO 30 KT, BRIEFLY NW 10-20 KT AND GUSTS
UP TO 50 KT POSSIBLE ALONG THE SHOWER/STORM LINE.
SUNDAY OUTLOOK...WIDESPREAD RAIN AND SNOW THROUGH SUNDAY, ESPECIALLY
SOUTH OF A KBNO-KBOI LINE. SNOW LEVELS LOWERING TO 4-5 KFT MSL
SUNDAY. AREAS OF MVFR/IFR FLIGHT CATEGORIES IN LOW CLOUDS AND
PRECIPITATION. MOUNTAINS FREQUENTLY OBSCURED. PATCHY FOG/STRATUS IN
VALLEYS THROUGH OVERNIGHT/EARLY MORNING HOURS SUNDAY. SURFACE WINDS
VARIABLE 5-15 KT, SW 5-15 KT WITH GUSTS TO 25-30 KT AT KTWF/KJER AND
IN SOUTHERN OWYHEE COUNTY.
PRELIMINARY POINT TEMPS/POPS
BAKER CITY 24 49 22 47 / 40 60 70 10
BOISE 39 52 34 50 / 90 50 70 0
BURNS 22 46 17 47 / 20 70 40 0
CALDWELL 37 53 32 53 / 90 60 60 0
FAIRFIELD 23 43 21 42 / 90 60 80 0
IDAHO CITY 25 48 21 46 / 100 60 90 10
JEROME 38 44 32 44 / 80 60 70 0
MCCALL 26 40 22 38 / 100 60 100 20
MOUNTAIN HOME 36 51 32 51 / 90 50 60 0
ONTARIO 35 53 31 52 / 60 50 60 0
ROME 31 50 26 50 / 70 70 40 0
TWIN FALLS 37 45 32 44 / 80 70 70 10
BOI WATCHES/WARNINGS/ADVISORIES
ID...WIND ADVISORY UNTIL 8 PM MDT THIS EVENING IDZ015-029.
OR...WIND ADVISORY UNTIL 8 PM MDT /7 PM PDT/ THIS EVENING
ORZ061-063.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
SHORT TERM...JR
LONG TERM....JR
AVIATION.....JM
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