273
FXUS65 KBOI 220912
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
312 AM MDT WED OCT 22 2025
SHORT TERM...TODAY THROUGH FRIDAY NIGHT
A RIDGE OF HIGH
PRESSURE WILL CONTINUE TO BUILD OVER THE REGION THROUGH
THURSDAY, AS A LOW PRESSURE SYSTEM MOVES SOUTH OF THE AREA
WEDNESDAY. THIS LOW WILL BRING CLOUDS OVER AREAS NEAR THE NEVADA
BORDER, BUT PRECIPITATION WILL STAY WELL TO OUR SOUTH.
OTHERWISE, SKIES WILL BE MOSTLY CLEAR ACROSS THE REGION THROUGH
FRIDAY. TEMPERATURES WILL STEADILY CLIMB THROUGHOUT THE WEEK,
WITH FRIDAY'S HIGHS PEAKING AT ABOUT 5-10 DEGREES ABOVE NORMAL.
WINDS WILL REMAIN LIGHT AND PRIMARILY TERRAIN DRIVEN, WITH
SOUTHEAST WINDS IN THE VALLEYS KEEPING OVERNIGHT LOWS ELEVATED
IN THE UPPER TREASURE VALLEY AND MAGIC VALLEY. SHELTERED
MOUNTAIN VALLEYS COULD SEE SOME OVERNIGHT FOG AND LOW CLOUDS
TOMORROW NIGHT, BUT CONFIDENCE IS LOW.
LONG TERM...SATURDAY THROUGH WEDNESDAY
WARM
SOUTHWEST FLOW AHEAD OF THE ATMOSPHERIC RIVER EVENT THIS
WEEKEND WILL KEEP TEMPERATURES ELEVATED ON SATURDAY, BUT
SLIGHTLY COOLER THAN FRIDAY. GUSTY WINDS WILL PRECEDE THE
PRECIPITATION ON SATURDAY, WITH SOUTHWEST WINDS PEAKING AT 20-30
MPH WITH GUSTS TO 40 MPH ACROSS HIGH TERRAIN IN SOUTHEAST
OREGON. WIDESPREAD PRECIPITATION IS ANTICIPATED BEGINNING ON
SATURDAY MORNING IN SOUTHEAST OREGON THEN MOVING INTO SOUTHWEST
IDAHO BY SATURDAY EVENING. SNOW LEVELS WILL INITIALLY STAY
AROUND 7000-8000 FEET FOR THE HEAVIEST PRECIPITATION, LOWERING
TO 4000-5000 FEET BY MONDAY WITH ANOTHER ROUND OF PRECIPITATION
EXPECTED.
A RIDGE OF HIGH PRESSURE WILL SLOWLY BUILD IN BY TUESDAY
MORNING, BRINGING A RETURN TO WARM CONDITIONS TOWARDS THE
MIDDLE OF THE WEEK. A TROUGH OVER THE PACIFIC NORTHWEST COAST
WILL BRING SOME LIGHT SHOWERS OVER HIGH TERRAIN IN THE WEST
CENTRAL MOUNTAINS BY WEDNESDAY, OTHERWISE CONDITIONS WILL STAY
DRY.
AVIATION
VFR. PATCHY FOG OVERNIGHT IN SHELTERED MOUNTAIN
VALLEYS. SURFACE WINDS: VARIABLE LESS THAN 10 KT. WINDS ALOFT
AT 10KFT MSL: W-SW 5-15 KT.
KBOI...VFR. SURFACE WINDS: SE 5-10 KT BECOMING VARIABLE 5 KT
WED AFTERNOON.
PRELIMINARY POINT TEMPS/POPS
BAKER CITY 63 28 63 31 / 0 0 0 0
BOISE 63 40 64 42 / 0 0 0 0
BURNS 64 25 65 27 / 0 0 0 0
CALDWELL 64 36 66 38 / 0 0 0 0
FAIRFIELD 61 28 62 27 / 0 0 0 0
IDAHO CITY 66 30 65 30 / 0 0 0 0
JEROME 61 39 60 37 / 0 0 0 0
MCCALL 59 30 58 31 / 0 0 0 0
MOUNTAIN HOME 65 36 66 37 / 0 0 0 0
ONTARIO 62 34 66 35 / 0 0 0 0
ROME 65 32 67 33 / 0 0 0 0
TWIN FALLS 61 38 60 37 / 0 0 0 0
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
SHORT TERM...SA
LONG TERM....SA
AVIATION.....SA
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