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NZUS99 KBOI 130423
TXTSFD
IDAHO STATE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
923 PM MST THU FEB 12 2026
AN UPPER-LEVEL LOW PRESSURE SYSTEM LINGERING NEAR THE CALIFORNIA AND NEVADA
BORDER WILL MAINTAIN A CHANCE FOR ISOLATED AFTERNOON SHOWERS ACROSS THE
SOUTHERN IDAHO HIGHLANDS AND BOISE MOUNTAINS THROUGH FRIDAY. EXTENSIVE LOW-
LEVEL MOISTURE WILL LEAD TO WIDESPREAD VALLEY FOG AND LOW CLOUDS ACROSS THE
SNAKE RIVER PLAIN AND CENTRAL IDAHO MOUNTAIN VALLEYS DURING THE OVERNIGHT AND
MORNING HOURS, POTENTIALLY IMPACTING TRAVEL VISIBILITY. A BRIEF DRY PERIOD IS
EXPECTED ON FRIDAY AS A WEAK RIDGE MOVES OVERHEAD, THOUGH CLOUD COVER WILL
INCREASE BY EVENING. A MORE SIGNIFICANT WEATHER PATTERN SHIFT ARRIVES OVER THE
WEEKEND AND PERSISTS THROUGH EARLY NEXT WEEK AS A SERIES OF PACIFIC STORMS MOVE
INLAND. WIDESPREAD PRECIPITATION IS EXPECTED MONDAY THROUGH WEDNESDAY, WITH
THE HEAVIEST MOUNTAIN SNOW ACCUMULATIONS LIKELY FOR CENTRAL AND NORTHERN IDAHO.
SNOW LEVELS WILL GENERALLY REMAIN BETWEEN 3,500 AND 5,000 FEET, KEEPING MOST
MAJOR VALLEY LOCATIONS AS RAIN OR A RAIN-SNOW MIX. TEMPERATURES WILL STAY NEAR
OR SLIGHTLY ABOVE SEASONAL NORMALS THROUGH THE WEEKEND BEFORE A COOLING TREND
BEGINS MID-WEEK.
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