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NZUS99 KBOI 210240
TXTSFD
IDAHO STATE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
840 PM MDT THU AUG 20 2026
STRONG HIGH PRESSURE TO THE SOUTH WILL CONTINUE HOT TEMPERATURES ON FRIDAY.
A PACIFIC LOW PRESSURE SYSTEM WILL MOVE INTO THE REGION AND BRING CHANCES OF
SHOWERS/THUNDERSTORMS LATE FRIDAY THROUGH THE WEEKEND. SATURDAY WILL SEE THE
HIGHEST LIKELIHOOD OF HEAVY RAINFALL OVER THE CENTRAL MOUNTAINS. THIS SYSTEM
WILL ALSO BRING A COOLING TREND WITH NEAR-NORMAL TEMPERATURES AND BREEZY
CONDITIONS OVER THE WEEKEND INTO MIDWEEK. LINGERING MONSOONAL MOISTURE WILL
CONTINUE ISOLATED SHOWERS/THUNDERSTORMS THROUGH MIDWEEK, MAINLY OVER THE
SOUTHERN AND CENTRAL PORTIONS OF THE STATE.
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