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NZUS99 KBOI 291508
TXTSFD
IDAHO STATE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
908 AM MDT WED APR 29 2026
UNSETTLED WEATHER CONTINUES THROUGH THE MIDDLE OF THE WEEK AS A BROAD TROUGH
REMAINS OVER THE REGION. CENTRAL AND EASTERN IDAHO CAN EXPECT DAILY CHANCES FOR
RAIN AND HIGH-ELEVATION SNOW SHOWERS, WITH ISOLATED AFTERNOON THUNDERSTORMS
POSSIBLE THROUGH WEDNESDAY. COLD OVERNIGHT TEMPERATURES WILL REMAIN A CONCERN
ACROSS THE STATE, WITH FROST AND FREEZING CONDITIONS LIKELY IN NORTHERN AND
SOUTHEASTERN VALLEYS THROUGH TUESDAY MORNING. A SIGNIFICANT SHIFT IN THE
WEATHER PATTERN BEGINS ON THURSDAY AS A HIGH-PRESSURE RIDGE BUILDS OVER THE
STATE. THIS WILL RESULT IN A DRY AND SUBSTANTIAL WARMING TREND THROUGH THE END
OF THE WEEK AND INTO NEXT WEEKEND. HIGH TEMPERATURES ARE FORECAST TO RISE INTO
THE 70S FOR MOST VALLEY LOCATIONS, WITH SOME AREAS IN CENTRAL AND SOUTHERN
IDAHO POTENTIALLY REACHING THE LOW 80S BY SATURDAY. BREEZY CONDITIONS MAY
PERSIST IN THE SNAKE RIVER PLAIN DURING THIS TRANSITION, BUT NO SIGNIFICANT
WIND IMPACTS ARE EXPECTED. EMERGENCY PLANNERS SHOULD MONITOR THE RAPID WARMING
LATE IN THE WEEK FOR POTENTIAL INCREASES IN HIGH-ELEVATION SNOWMELT.
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