630
FXUS65 KBOI 241008
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
408 AM MDT WED JUN 24 2026
KEY MESSAGES
- TEMPERATURES CONTINUING 5 TO 10 DEGREES ABOVE NORMAL THROUGH
THURSDAY.
- SLIGHT CHANCE OF THUNDERSTORMS WEDNESDAY INTO THURSDAY MORNING
ACROSS EASTERN OR AND SOUTHWEST ID.
- PATTERN CHANGE TO COOLER AND UNSETTLED BEGINNING FRIDAY AS A
TROUGH ARRIVES FROM THE GULF OF ALASKA.
- TEMPERATURES AROUND 15 TO 20 DEGREES BELOW NORMAL SATURDAY
AND SUNDAY.
- SIGNIFICANT PRECIPITATION POSSIBLE FRIDAY THROUGH SUNDAY.
SHORT TERM /THROUGH FRIDAY NIGHT/
TEMPERATURES WILL REMAIN AROUND 5 TO 10 DEGREES ABOVE
NORMAL THROUGH THURSDAY. A SHORTWAVE MOVES ACROSS THE PACIFIC
NW LATE THIS AFTERNOON, WITH INCREASING HIGH CLOUDS AND ISOLATED
SHOWERS AND THUNDERSTORMS IN EASTERN OR, AND ALONG THE NV
BORDER IN ID THIS AFTERNOON AND EVENING. THE SYSTEM WILL MOVE
OVER IDAHO OVERNIGHT, BRINGING A CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS OVERNIGHT INTO THURSDAY MORNING. CLOUDS
CLEAR OUT MIDDAY THURSDAY BEFORE INCREASING CLOUDS LATE FROM
THE NEXT SYSTEM ARRIVING FROM THE GULF OF ALASKA. A COLD FRONT
MOVES THROUGH SOUTHEAST OR AND SOUTHWEST ID ON LATE THURSDAY
EVENING INTO FRIDAY MORNING. IT WILL TAKE A WHILE FOR CONDITIONS
TO MOISTEN UP IN THE LOW LEVELS, AS SHOWERS INCREASE ACROSS THE
AREA AND BECOME WIDESPREAD IN COVERAGE. AS THE MAIN COLD FRONT
MOVES THROUGH ON FRIDAY, PARTIAL CLEARING BEHIND THE FRONT WILL
LEAD TO UNSTABLE CONDITIONS WITH SCATTERED SHOWERS AND
THUNDERSTORMS DURING THE AFTERNOON AND EVENING ON FRIDAY.
TEMPERATURES ON FRIDAY LOWER TO AROUND 10 DEGREES BELOW NORMAL.
LONG TERM /SATURDAY THROUGH WEDNESDAY/
COOL AND SHOWERY CONDITIONS CONTINUE ON SATURDAY AND SUNDAY
WITH A SLIGHT CHANCE OF THUNDERSTORMS AS THE TROUGH SLOWLY MOVES
OVERHEAD. WETTING RAINS POSSIBLE SATURDAY AND SUNDAY WITH
TEMPERATURES AROUND 15-20 DEGREES BELOW NORMAL. SIGNIFICANT
PRECIPITATION POSSIBLE WITH THIS SYSTEM, DEPENDING ON WHERE THE
TRACK OF THE SYSTEM GOES. AS IT STANDS RIGHT NOW, PRECIPITATION
AMOUNTS OF UP TO 1 TO 1.25 INCH POSSIBLE OVER THE CENTRAL ID
MOUNTAINS, WITH LESSER AMOUNTS IN EASTERN OR, WHERE LESS THAN
0.25 INCH EXPECTED. LIGHT SNOW POSSIBLE ON THE PEAKS ABOVE 7000
FEET SUNDAY MORNING. CONDITIONS DRY OUT WITH BREEZY CONDITIONS
ON MONDAY AND TUESDAY AS THE SYSTEM MOVES NORTHEAST INTO
MANITOBA. THIS SYSTEM WILL KEEP TEMPERATURES BELOW NORMAL UNDER
COOL NORTHWEST FLOW ALOFT.
AVIATION /06Z WEDNESDAY THROUGH THURSDAY/
ISSUED 1225 AM MDT WED JUN 24 2026
VFR. HIGH DENSITY ALTITUDE WED/PM DUE TO HOT TEMPERATURES. ISOLATED
SHOWERS/THUNDERSTORMS DEVELOPING WED/PM, MAINLY NEAR THE ID/NV
BORDER. THUNDER CAPABLE OF ERRATIC OUTFLOWS TO 35 KT. SURFACE WINDS:
VARIABLE 5-10 KT OVERNIGHT. THEN W-NW 10-15 KT WITH GUSTS TO AROUND
20 KT WED/PM. WINDS ALOFT AT 10KFT MSL: VARIABLE 5-15 KT.
KBOI...VFR. HIGH DENSITY ALTITUDE WED/PM DUE TO HOT TEMPERATURES.
SURFACE WINDS: VARIABLE (LEANING S-SW) 3-6 KT OVERNIGHT, THEN NW 8-
12 KT WITH GUSTS TO AROUND 20 KT WED/PM.
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...KA
LONG TERM....KA
AVIATION.....NF
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